Software Engineering Radio - The Podcast for Professional Software Developers

By SE-Radio Team

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Software Engineering Radio is a podcast targeted at the professional software developer. The goal is to be a lasting educational resource, not a newscast. Every 10 days, a new episode is published that covers all topics software engineering. Episodes are either tutorials on a specific topic, or an interview with a well-known character from the software engineering world. All SE Radio episodes are original content — we do not record conferences or talks given in other venues. Each episode comprises two speakers to ensure a lively listening experience. SE Radio is an independent and non-commercial organization. All content is licensed under the Creative Commons 2.5 license.

Episode Date
SE-Radio Episode 328: Bruce Momjian on the Postgres Query Planner
Bruce Momjian, a longtime Postgres developer, educator and consultant joins Robert Blumen for a discussion of the SQL query planner in the Postgres relational database. Topics covered include what is a query? How queries are evaluated by the server; the phases of query evaluation; SQL as a declarative language; why declarative query evaluation is simpler [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 19, 2018
SE-Radio Episode 327: Glynn Bird on Developer Productivity with Open Source
Nate Black interviews Glynn Bird on how to maximize productivity and learning by consuming and producing open source software. Topics discussed include: the impact of open source software on the development process, why open source contributions are important for your career development and getting a job, how GitHub is the new resume or CV, how [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 12, 2018
SE-Radio Episode 326: Dmitry Jemerov and Svetlana Isakova on the Kotlin Programming Language
Dmitry Jemerov and Svetlana Isakova speak to Matthew Farwell about the Kotlin programming language. They cover what the goals of Kotlin are, why Kotlin was created, what the target use cases are for Kotlin, syntax differences between Java &#38; Kotlin, differences in classes and interfaces between Java &#38; Kotlin, pattern matching in Kotlin, Kotlin&#8217;s type [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 05, 2018
SE-Radio-Episode-325: Tammy Butow on Chaos Engineering
Edaena Salinas talks with Tammy Butow about Chaos Engineering. Topics include: the factors that caused Chaos Engineering to emerge, the different types of chaos that can be introduced to a system, how to structure experiments. Some of the chaos engineering experiments that were discussed are: DNS related attacks, black hole attacks and database attacks. Tammy [&#8230;]<img src="" height="1" width="1" alt=""/>
May 29, 2018
SE-Radio Episode 324: Marc Hoffmann on Code Test Coverage Analysis and Tools
Diomidis Spinellis talks with Marc Hoffmann on code test coverage and the tools that can analyze it. Knowing the percentage of code that is covered by tests, can help developers assess the quality of their test cases and help them add missing tests and thereby find and remove software faults. Marc is a key developer [&#8230;]<img src="" height="1" width="1" alt=""/>
May 22, 2018
SE-Radio Episode 323: Lin Clark on WebAssembly
Lin Clark speaks to Matthew Farwell about WebAssembly. The show covers: what WebAssembly is; what are the goals and use cases for WebAssembly; why you want to use it; how to interact with the browser, how it changes your development process; security, the future of web assembly. &#160; Related Links WebAssembly WebAssembly Demo Reading more [&#8230;]<img src="" height="1" width="1" alt=""/>
May 08, 2018
SE-Radio Episode 322: Bill Venners on Property Based Tests
Bill Venners speaks to Matthew Farwell about Property Based Tests. The show covers: what a property based test is, how it differs from example based testing; why you would want to use them; use cases for property based tests; when you shouldn&#8217;t use property based tests; how property based testing impacts a team&#8217;s development process; [&#8230;]<img src="" height="1" width="1" alt=""/>
May 01, 2018
SE-Radio Episode 321: Péter Budai on End to End Encryption
Head of Cryptography Engineering at Tresorit, Péter Budai talks with Kim Carter about End to End Encryption (E2EE), backdoors, the scenarios where E2EE can be and should be used. IM, Voice over IP, Email scenarios, as well as interservice communication scenarios such as securing data in use with full memory encryption, CPU-based key storage, enclaves, [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 10, 2018
SE-Radio Episode 320: Nate Taggart on Serverless Paradigm
Kishore Bhatia discusses with Nate Taggart about Serverless. Topics include: understanding the motivations for this computing model, deep dive learning about Serverless architecture, development frameworks and tools. Learn from Nate’s experience with Serverless paradigm developing Operations tools at Stackery and find out various approaches, challenges and best practices for architecting and building Serverless applications. Related [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 27, 2018
Seeking a New Volunteer Host
SE Radio is looking for a volunteer host to produce five episodes per year.  No previous podcast experience is necessary – we provide training and coaching.  A broad interest in a range of topics, some work experience developing software, and an interest in communications and broadcasting are all that’s necessary.    The host comes up [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 23, 2018
SE-Radio Episode 319: Nicole Hubbard on Migrating from VMs to Kubernetes
Edaena Salinas talks with Nicole Hubbard about migrating a VM infrastructure to Kubernetes. The discussion begins with an overview of the VM infrastructure at WP Engine. Next, they discussed the characteristics that indicated it was time to consider migrating to a container based infrastructure using Kubernetes. Containers are different than VMs. There are pros and [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 13, 2018
SE Radio Episode 318: Veronika Cheplygina on Image Recognition
Felienne interviews Veronika Cheplygina about image recognition. The discussion covers: what exactly constitutes image recognition, including categorizing and segmentation problems; fields where image recognition are currently being applied, including medicine, self-driving cars and security, and future applications. The host and guest also cover how to obtain enough and good datasets, and some of the common [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 20, 2018
SE-Radio Episode 317: Travis Kimmel on Measuring Software Engineering Productivity
Kishore Bhatia talks with Travis Kimmel on software engineering measuring, communicating and improving engineering productivity, and challenging the widespread belief that engineering is an art. Their conversation covers: measuring engineering impact; key performance indicators (KPIs); development metrics; challenges in building a delivery pipeline with metrics; implementing feedback loops; the key metrics that most engineering teams [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 06, 2018
SE-Radio Episode 316: Nicolai Parlog on Java 9
Nate Black talks with Nicolai Parlog about Java 9. Topics include: a timeline of Java features; new patterns enabled by Java 8 lambdas, default interface implementations and how they enable code evolution; how Java 9 takes this further with private default methods; an introduction to Java modules: the Java Platform Module System (JPMS); “launch time” [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 30, 2018
SE-Radio Episode 315: Jeroen Janssens on Tools for Data Science
Felienne interviews Jeroen Janssens on Data Science. They examine what data science is exactly, particularly exploring how it differs from machine learning and statistics. The episode further considers what skills people need to be great data scientists – skills that are related but not always equal to the skills that programming and software engineering require. [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 23, 2018
SE-Radio Episode 314: Scott Piper on Cloud Security
Founder of Summit Route / creator of FLAWS, Scott Piper talks with Kim Carter about Cloud Security. Covering the often misunderstood Shared Responsibility Model. Kim and Scott discuss how our assets have changed, and what the risks and countermeasures are with the exodus to the Cloud. A selection of techniques are discussed on how we [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 16, 2018
SE-Radio Episode 313: Conor Delanbanque on Hiring and Retaining DevOps
Kishore Bhatia talks with Conor Delanbanque about DevOps Hiring, building and retaining top talent in the DevOps space. Topics include DevOps as a special Engineering skill, building DevOps mindset and culture, challenges in hiring and retaining top talent and building teams and best practices for DevOps engineers and employers hiring for these skills. Related Links [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 19, 2017
SE-Radio Episode 312: Sachin Gadre on the Internet of Things
Edaena Salinas talks with Sachin Gadre about the internet of things (IoT). What is IoT? What is the architecture of an IoT application? Sachin walks through a series of example to show how IoT applications are used and how they are built. Topics include: internet of things, data sources, and security. &#160; Related Links The [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 12, 2017
SE-Radio Episode 311: Armon Dadgar on Secrets Management
Armon Dadgar speaks to Matthew Farwell about Secrets Management. The show covers: what a secret is; the difference between secrets and sensitive data; what is secrets management; the different types of secrets; key management; auditing of secrets; implementing secrets management. &#160; Related Links Vault Project Kerwhiz Armon Dadgar HashiCorp SE-Radio Episode 290: Diogo Mónica on [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 05, 2017
SE-Radio Episode 310: Kirk Pepperdine on Performance Optimization
Kirk Pepperdine talks with IEEE Software editor in chief Diomidis Spinellis about performance optimization. Topics include development practices, tools, as well as the role of software architecture, programming languages, algorithms, and hardware advances. Topics include: how a performance diagnostic model containing the system’s components can help us understand what each component is responsible for and [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 28, 2017
SE-Radio Episode 309: Zane Lackey on Application Security
Founder of Signal Sciences Zane Lackey talks with Kim Carter about Application Security around what our top threats are today, culture, threat modelling, and visibility, and how we can improve our security stature as Software Engineers. &#160; Related Links Web Application Security: Threats, Countermeasures, and Pitfalls Network Security with Haroon Meer Docker Security with Diogo [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 14, 2017
SE-Radio Episode 308: Gregor Hohpe on It Architecture and IT Transformation
Bryan Reinero talks with Gregor Hohpe  about IT Transformation, the process by which organizations adapt and reorganize themselves in response to the way our industry has evolved. Gregor discusses the role of the Enterprise Architect as a leader in the process of  IT Transformation by assessing pressures affecting engineering teams, available technologies, and  business goals [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 08, 2017
SE-Radio Episode 307: Harsh Sinha on Product Management
Bryan Reinero talks with Harsh Sinha, VP of  Engineering at TransferWise, about Product Management.  Product Management deals with the planning, delivery and marketing of a software product. The discussion covers how those functions are achieved, and how product management interfaces with engineering; how product requirements are derived from customer needs; how teams build product based [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 31, 2017
SE-Radio Episode 306: Ron Lichty on Managing Programmers
Ron Lichty talks with SE-Radio’s Nate Black about managing programmers. Topics include: why programming management is hard, what makes a good programming manager, the costs of micromanagement, self-organizing teams, team dynamics and motivation, and product team performance. &#160; Related links Ron Lichty’s blog Ron Lichty Consulting Managing the Unmanageable “If we’re Agile, why do we [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 17, 2017
SE-Radio Episode 305: Charlie Berger on Predictive Applications
Charlie Berger talks with SE Radio&#8217;s Edaena Salinas about predictive applications. What are predictive applications? How are they built? What&#8217;s the role of machine learning in predictive applications? The interview explores implementing machine learning algorithms natively in the database, different machine learning algorithms, and how they&#8217;re applied. Topics include: machine learning, databases, data architecture, predictive [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 10, 2017
SE-Radio Episode 304: Evgeny Shadchnev on Code Schools
Evgeny Shadchnev talks with Felienne about code schools, programs that prepare people to become software developers in a few months. This episode explores the idea of code schools. Can we really teach programming in a few months rather than years in university? Who teaches in those programs? Who attends them? What are their business models, and [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 26, 2017
SE-Radio Episode 303: Zachary Burt on Freelancing as a Career Option
Zachary Burt discusses freelancing as a career option with SE Radio&#8217;s Felienne. How does freelancing differ from employment? How should we handle personal marketing and sales? How do you find a work-life balance when you&#8217;re self-employed? The interview also covers practical tips such as deciding on an hourly rate and managing demanding customers. Related Links [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 19, 2017
SE-Radio Episode 302: Haroon Meer on Network Security
Founder of Thinkst, Haroon Meer talks with Kim Carter about network security. Topics include how attackers are gaining footholds into our networks, moving laterally, infilling malware and exfilling our precious data; why we care; and clear advice on what we software engineers can do about it. Areas of information security are merging, network security is [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 12, 2017
Welcome New Host Bryan Reinero
We&#8217;re pleased to welcome Bryan Reinero to SE Radio. Bryan Reinero is a product manager for MongoDB with more than 15 years of experience in commercial software, distributed systems, and databases. Bryan got his start in the industry writing aero-acoustic research and signal processing software at the Experimental Physics Branch of NASA’s Ames Research Center. He has a bachelor’s degree [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 29, 2017
SE-Radio Episode 301: Jason Hand on Handling Outages
Bryan Reinero talks with Jason Hand about handling outages and responding to failures. The episode explores basic problem-solving strategies and diagnostic techniques, organizing teams to address incidents efficiently, communicating with stakeholders, learning from incidents, and managing stress. &#160; Related Links Episode 284 &#8211; John Allspaw on System Failures: Preventing, Responding, and Learning From Episode 225 [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 29, 2017
SE-Radio Episode 300: Jonathan Stark on Mobile App Development
Nate Black interviews Jonathan Stark on Mobile App development. Topics include: platforms for mobile development, making decisions about how to develop mobile apps, how to deploy mobile apps, native apps vs. progressive web apps, React Native, and the future of mobile applications. Jonathan shares his expert knowledge about the evolution of the mobile ecosystem and [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 15, 2017
SE-Radio Episode 299: Edson Tirelli on Rules Engines
Robert Blumen talks to JBoss Drools project lead Edson Tirelli about Rules Engines. The show covers: the nature of business rules; rules and facts; rules and actions; the importance or rules to a business; the structure of a business rule; how many is “a lot” of rules?; communication about rules between the business and software [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 08, 2017
SE-Radio Episode 298: Moshe Vardi on P versus NP
Felienne talks with Moshe Vardi about P versus NP. Why is this problem so central to computer science? Are we close to solving it?  Is it necessary to solve it? Progress toward computing hard problems efficiently with SAT solvers.  How SAT solvers work,; applications of SAT like formal verification. &#160; Related Links TU Eindhoven P [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 25, 2017
Welcome New Host Kishore Bhatia
We&#8217;re pleased to welcome Kishore Bhatia to SE Radio. Kishore is a developer at heart and currently works on solving enterprise business problems at scale using blockchains. He leads the engineering team at BlockApps with new product development, infrastructure, platform engineering, and operations. With 16+ years in software development (C/C++ on UNIX, Java/Web, distributed systems and DevOps [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 18, 2017
SE-Radio Episode 297: Kieren James-Lubin on Blockchain
Kishore Bhatia talks with Kieren James-Lubin about Blockchains. Topics include Blockchains, Cryptocurrency, Bitcoin, Distributed Ledger, Decentralized Apps, Ethereum, Smart Contract development with Solidity, ICO’s and Tokens. &#160; Related Links &#160; IEEE search for blockchains Blockchain TED Talk Ethereum Solidity Smart Contracts Truffle for testing Smart Contracts Guest Twitter: Guest Email:<img src="" height="1" width="1" alt=""/>
Jul 18, 2017
SE-Radio Episode 296: Type Driven Development with Edwin Brady
Edwin Brady speaks to Matthew Farwell about Type Driven Development and the Idris Programming language. The show covers: what a type is; static vs dynamic types in programming languages; dependent types; the Idris programming language; why Idris was created. Type safe printf modelling state in Idris modelling protocols in Idris modelling concurrency in Idris type driven development and how it changes the development process. Related [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 11, 2017
SE-Radio Episode 295: Michael Feathers on Legacy Code
Felienne talks with Michael Feathers about Legacy Code. When is something legacy? Is working on legacy different from working on greenfield code? Do developers need different skills and techniques? Testing legacy code. How to test a legacy system? When do we have enough tests to feel safe to start coding? Techniques to make legacy systems [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 27, 2017
SE-Radio Episode 294: Asaf Yigal on Machine Learning in Log Analysis
Asaf Yigal talks with SE Radio’s Edaena Salinas about machine learning in log analysis. The discussion starts with an overview of the structure of logs and what information they can contain. Asaf discusses what the log analysis process looks like without machine learning &#8212; and the role of humans in this – before moving on [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 20, 2017
Welcome New Host Matthew Farwell
We&#8217;re pleased to welcome Matthew Farwell to SE Radio. Matthew is a senior software developer at Nexthink in Lausanne, Switzerland. He has more than 25 years of development experience in C and then Java / Scala / JavaScript. His technical interests include programming languages, testing, code quality, and DevOps. Farwell is the creator of Scalastyle: the [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 08, 2017
SE-Radio Episode 293: Yakov Fain on Angular
Yakov Fain talks with SE Radio’s Matthew Farwell about the Angular web development framework. The show covers the philosophy behind Angular; who would want to use the platform; how an Angular application is composed, including how to handle form submission and validation; why Typescript was chosen for Angular; how Angular uses reactive programming (RxJS, in [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 06, 2017
SE-Radio Episode 292: Philipp Krenn on Elasticsearch
Phillipp Krenn talks with SE Radio’s Jeff Meyerson about Elasticsearch, a scalable search index. The conversation begins with a discussion of search, how it compares to database queries, and what an inverted index is. Phillipp introduces Wikipedia as an example that runs throughout the episode because Wikipedia uses Elasticsearch to power its full-text search. A [&#8230;]<img src="" height="1" width="1" alt=""/>
May 30, 2017
Listener Survey
Dear SE Radio listener, To help make the show even stronger, we&#8217;re conducting a short survey and would very much appreciate two minutes of your time to help. Thanks for your support, The SE Radio Team<img src="" height="1" width="1" alt=""/>
May 23, 2017
SE-Radio Episode 291: Morgan Wilde on LLVM
Morgan Wilde talks with SE Radio’s Jeff Meyerson about the LLVM compiler toolchain. They begin with a discussion of how a compiler works and how compiled code executes against different processor architectures. Using the JVM as a model for interoperability, they move on to how LLVM is a system that optimizes an intermediate representation (IR), [&#8230;]<img src="" height="1" width="1" alt=""/>
May 16, 2017
SE-Radio Episode 290: Diogo Mónica on Docker Security
Docker Security Team lead Diogo Mónica talks with SE Radio’s Kim Carter about Docker Security aspects. Simple Application Security, which hasn’t changed much over the past 15 years, is still considered the most effective way to improve security around Docker containers and infrastructure. The discussion explores characteristics such as Immutability, the copy-on-write filesystem, as well [&#8230;]<img src="" height="1" width="1" alt=""/>
May 09, 2017
SE-Radio Episode 289: James Turnbull on Declarative Programming with Terraform
James Turnbull rejoins the show with Robert Blumen for a conversation mostly about Terraform, as well as a bit about Puppet. Terraform is a declarative programming tool for automating infrastructure resource creation; it targets resource providers, such as Amazon AWS, Microsoft Azure, Digital Ocean, and other cloud and SAAS back ends. The discussion explores the [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 25, 2017
SE-Radio Episode 288: Francois Raynaud on DevSecOps
Francois Raynaud and Kim Carter discuss what&#8217;s wrong with the traditional delivery approach and why we need to change. They explore the dangers of retrofitting security to the end of projects, how to combine development, operations, and security people into the same development teams and why, along with cost-benefit analysis. Francois and Kim discuss the [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 18, 2017
Welcome New Host Kim Carter
We&#8217;re pleased to welcome Kim Carter to the SE radio team. Kim is a technologist / engineer, information security professional, entrepreneur, and the founder of BinaryMist. He has 15 years&#8217; commercial experience in architecture, development, engineering, and testing of both small and large-scale software and networks. He also has considerable experience in security assessments and penetration testing. Carter is [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 12, 2017
SE-Radio Episode 287: Success Skills for Architects with Neil Ford
Neal Ford of ThoughtWorks chats with SE Radio&#8217;s Kim Carter about the skills required to be a successful software architect, how to create and maintain them, and how to transition from other roles, such as software engineering. Neal discusses that the required skills can be learned, you do not have to be born with special [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 11, 2017
SE-Radio Episode 286: Katie Malone Intro to Machine Learning
Edaena Salinas talks with Katie Malone about Machine Learning. Katie Malone is a Data Scientist in the Research and Development department at Civis Analytics. She has a PhD in Physics from Stanford University, with a background specifically in particle physics. She is an instructor of the Intro to Machine Learning online course from Udacity and [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 28, 2017
SE-Radio Episode 285: James Cowling on Dropbox’s Distributed Storage System
James Cowling of Dropbox (architect of their distributed storage system), speaks to Robert Blumen about their move from Amazon&#8217;s S3 to their own infrastructure; The show covers: the size, scope and scale of Dropbox&#8217;s data management; their experience on Amazon&#8217;s S3; why S3 over time did not meet their needs; how the decision was made [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 14, 2017
SE-Radio Episode 284: John Allspaw on System Failures: Preventing, Responding, and Learning From
John Allspaw CTO of Etsy speaks with Robert Blumen about systemic failures and outages; how are systems defended against outages?; why do they fail anyway?; why are failures not entirely preventable?; why do outages involve multiple failures?; the time that Etsy identified it&#8217;s own office as a potential source of fraud; the human as part [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 07, 2017
SE-Radio Episode 283: Alexander Tarlinder on Developer Testing
Felienne talks with Alexander Tarlinder on Developer Testing. Topics include Developer Testing, Agile Testing, Programming by Contract, Specification Based Testing, Venue: KTH, Stockholm Related Links Alexander on Twitter Agile Testing: A Practical Guide for Testers and Agile Teams by Lisa Crispin and Janet Gregory Clean Code Alexander&#8217;s book review site Developer [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 28, 2017
SE-Radio Episode 282: Donny Nadolny on Debugging Distributed Systems
Donny Nadolny of PagerDuty joins Robert Blumen to tell the story of debugging an issue that PagerDuty encountered when they set up a Zookeeper cluster that spanned across two geographically separated datacenters in different regions.  The debugging process took them through multiple levels of the stack starting with their application, the implementation of the Zookeeper [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 14, 2017
Welcome New Host
We&#8217;re pleased to welcome Edaena Salinas to the SE Radio team. Edaena is a software engineer at Microsoft where she has worked on front-end and back-end development for web applications. In 2017, she started working in the Knowledge and Technologies group at Microsoft Research. Her technical interests include software engineering, web development, artificial intelligence, testing, and DevOps. She [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 09, 2017
SE-Radio Episode 281: James Whittaker on Career Strategy
Edaena Salinas talks with James Whittaker about Career Strategy in the technology field. James is a Distinguished Technical Evangelist at Microsoft. Throughout his career, he specialized in Software Testing, Security, and Storytelling. He is the author of “How Google Tests Software” and the viral blog post “Why I left Google”. Topics include: Career Management, the [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 07, 2017
SE-Radio Episode 280: Gerald Weinberg on Bugs Errors and Software Quality
Marcus Blankenship talks with Gerald Weinberg about software errors, the fallacy of perfection, how languages and process can reduce errors, and the attitude great programmers have about their work.  Gerald’s new book, Errors: Bugs, Boo-boos, and Blunders, focuses on why programmers make errors, how teams can improve their software, and how management should think of [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 24, 2017
Seeking a New Host for SE Radio
We have an opening for a volunteer host to produce five episodes per year. Please contact the show editor Robert Blumen for details.<img src="" height="1" width="1" alt=""/>
Jan 23, 2017
We’re Listening
Recently, the IEEE Computer Society&#8217;s popular SE Radio podcast included a sponsored advertising campaign that sparked a negative reaction among many of those involved with producing SE Radio, as well as among a number of listeners. In response to that reaction, the Computer Society has reviewed the advertisement and removed it from the podcast. In [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 18, 2017
SE-Radio Episode 279: Florian Gilcher on Rust
Eberhard talks with Florian Gilcher about the programming language Rust. Rust originates from Mozilla research. Its focus is on system programming and it is often used to replace C or C++. Topics include the concepts behind Rust; concurrent and safe programming; advanced and unique features like ownership and borrowing; the rust type system (which supports [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 10, 2017
SE-Radio Episode 278: Peter Hilton on Naming
Felienne talks with Peter Hilton on how to name things. The discussion covers: why naming is much harder than we think, why naming matters in programming and program comprehension, how to create good names, and recognize bad names, and how to improve your naming skills. Venue: Felienne&#8217;s residence, Rotterdam Related Links To camelcase or under_score by [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 20, 2016
New SE Radio Show Hosts
Software Engineering Radio welcomes Marcus Blankenship to the team. Marcus is a management consultant, trainer, and executive coach for software managers and leaders. After working in enterprise for 14 years and owning two companies, he now helps engineering managers become better leaders. You can learn more about Marcus at his web site. His first episode was [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 19, 2016
SE-Radio Episode 277: Gil Tene on Tail Latency
Gil Tene joins Robert Blumen for a discussion of tail latency. What is latency? What is &#8220;tail latency&#8221;? Why are the upper percentiles of latency more relevant to humans? How is human interaction with an application influenced by tail latency? What are the economics of tail latency? What are the origins of tail latency within [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 14, 2016
SE-Radio Episode 276: Björn Rabenstein on Site Reliability Engineering
Björn Rabenstein discusses the field of Site Reliability Engineering (SRE) with host Robert Blumen. The term SRE has recently emerged to mean Google&#8217;s approach to DevOps. The publication of Google&#8217;s book on SRE has brought many of their practices into more public discussion. The interview covers: what is distinct about SRE versus devops; the SRE [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 06, 2016
SE-Radio Episode 275: Josh Doody on Salary Negotiation for Software Engineers
Marcus Blankenship talks with Josh Doody about salary negotiation. Topics include a framework for thinking about salary negotiations, how you can know what you&#8217;re worth, the employers view of salary negotiation, and missed negotiation opportunities. Also discussed are common fears about negotiating and how to overcome them, common mistakes during negotiations, and how negotiation makes [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 22, 2016
SE-Radio Episode 274: Sam Aaron on Sonic Pi
Felienne talks with Sam Aaron on Sonic Pi. Topics include how to design a programming language with a broad audience, what features enable a language to be powerful and fun for children to play with, what the role of programming and programming education is in the world in general and the world of music in [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 08, 2016
SE-Radio Episode 273: Steve McConnell on Software Estimation
Sven Johann talks with Steve McConnell about Software Estimation. Topics include when and why businesses need estimates and when they don’t need them; turning estimates into a plan and validating progress on the plan; why software estimates are always full of uncertainties, what these uncertainties are and how to deal with them. They continue with: [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 01, 2016
SE-Radio Episode 272: Frances Perry on Apache Beam
Jeff Meyerson talks with Frances Perry about Apache Beam, a unified batch and stream processing model. Topics include a history of batch and stream processing, from MapReduce to the Lambda Architecture to the more recent Dataflow model, originally defined in a Google paper. Dataflow overcomes the problem of event time skew by using watermarks and [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 25, 2016
SE-Radio Episode 271: Idit Levine on Unikernels
Jeff Meyerson talks to Idit Levine about Unikernels and unik, a project for compiling unikernels. The Linux kernel contains features that may be unnecessary to many application developers&#8211;particularly if those developers are deploying to the cloud. Unikernels allow programmers to specify the minimum features of an operating system we need to deploy our applications. Topics [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 11, 2016
SE-Radio Episode 270: Brian Brazil on Prometheus Monitoring
Jeff Meyerson talks with Brian Brazil about monitoring with Prometheus, an open source tool for monitoring distributed applications. Brian is the founder of Robust Perception, a company offering Prometheus engineering and consulting. The high level goal of Prometheus is to allow developers to focus on services rather than individual instances of a given service. Prometheus [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 04, 2016
SE-Radio Episode 269: Phillip Carter on F#
Eberhard Wolff talks with Phillip Carter about F#.  A multi-paradigm programming language that supports object-oriented, imperative, and functional programming, F# can be used for a broad variety of applications. It’s an especially good fit for parallel programming and DSLs. Type interference allows F# code to be type safe even if no types are declared in [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 27, 2016
SE-Radio Episode 268: Kief Morris on Infrastructure as Code
Kief Morris, cloud specialist at ThoughtWorks and author of the recent book Infrastructure as Code, talks to Sven Johann about why this concept is becoming increasingly important due to cloud computing. They discuss best practices for writing infrastructure code, including why you should treat your servers as cattle, not pets, as well as how to [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 13, 2016
SE-Radio Episode 267: Jürgen Höller on Reactive Spring and Spring 5.0
Eberhard Wolff talks with Jürgen Höller about Reactive Spring. Reactive programming is a hot topic, but adoption has been slow in the enterprise. Spring 5 incorporates Reactor and the RxJava API to help Java developers build scalable high-performance web applications. The discussion explores architectural challenges, transactions, porting existing applications, and increased code complexity. Venue: GOTOcon Amsterdam [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 06, 2016
SE-Radio Episode 266: Charles Nutter on the JVM as a Language Platform
Charles Nutter talks to Charles Anderson about the JRuby language and the JVM as a platform for implementing programming languages. They discuss JRuby and its implementation on the JVM as an example of a language other than Java on the JVM. Venue: Skype Related Links Charles Nutter on Twitter: Charles Nutter on GitHub: JRuby [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 16, 2016
SE-Radio Episode 265: Pat Kua on Becoming a Tech Lead
Johannes Thönes talks to Patrick Kua about the role of a technical lead and how people become tech leads. The show covers the definition of a tech lead, the responsibilities of the role and the challenges of becoming a tech lead. Venue: Internet &#160; Related Links Episode 228: Software Architecture Sketches with Simon Brown Article: A [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 09, 2016
SE-Radio Episode 264: James Phillips on Service Discovery
Charles Anderson talks with James Phillips about service discovery and Consul, an open-source service discovery tool. The discussion begins by defining what service discovery is, what data is stored in a service discovery tool, and some scenarios in which it’s used. Then they dive into some details about the components of a service discovery tool [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 02, 2016
SE-Radio Episode 263: Camille Fournier on Real-World Distributed Systems
Stefan Tilkov talks to Camille Fournier about the challenges developers face when building distributed systems. Topics include the definition of a distributed system, whether developers can avoid building them at all, and what changes occur once they choose to. They also talk about the role distributed consensus tools such as Apache Zookeeper play, and whether [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 25, 2016
SE Radio Episode 262: Software Quality with Bill Curtis
Sven Johann talks with Bill Curtis about Software Quality. They start with what software quality is and then discuss examples of systems which failed to achieve the quality goals (e.g. ObamaCare) and it&#8217;s consequences. They then go on with the role of architecture in the overall quality of the system and how to achieve it [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 12, 2016
SE-Radio Episode 261: David Heinemeier Hansson on the State of Rails, Monoliths, and More
David Heinemeier Hansson, creator of the Ruby on Rails framework and a partner at the software development company Basecamp, talks to Stefan Tilkov about the state of Ruby on Rails and its suitability for long-term development. He addresses some of its common criticisms, such as perceived usefulness for only simple problems, claimed lack of scalability, [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 28, 2016
SE-Radio Episode 260: Haoyuan Li on Alluxio
Jeff Meyerson talks to Haoyuan Li about Alluxio, a memory-centric distributed storage system. The cost of memory and disk capacity are both decreasing every year–but only the throughput of memory is increasing exponentially. This trend is driving opportunity in the space of big data processing. Alluxio is an open source, memory-centric, distributed, and reliable storage [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 14, 2016
SE-Radio Episode 259: John Purrier on OpenStack
John Purrier talks with Jeff Meyerson about OpenStack, an open-source cloud operating system for managing compute resources. They explore infrastructure-as-a-service, platform-as-a-service, virtualization, containers, and the future of systems development and management. Cloud service providers like Amazon, Google, and Microsoft provide both infrastructure-as-a-service and platform-as-a-service. Infrastructure-as-a-service gives developers access to virtual machines, servers, and network infrastructure. [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 07, 2016
SE-Radio Episode 258: Cody Voellinger on Recruiting Software Engineers
Robert Blumen talks with Cody Voellinger, the founder of a recruiting firm that specializes in filling software engineer roles for San Francisco-area startups, about how jobs are created and how companies and engineers get matched up. Their discussion covers the entire job search process, from job descriptions to salary negotiations. They look at the job [&#8230;]<img src="" height="1" width="1" alt=""/>
May 24, 2016
SE-Radio Episode 257: Michael Nygard on Clojure in Practice
Michael Nygard of “Release It!” fame talks with Stefan Tilkov about his experience using the Clojure programming language. Topics include the tool chain and development process, the Clojure learning curve, and on-boarding new developers. Michael explains the similarities and differences compared to typical OO languages when implementing domain logic, and uses both game development and [&#8230;]<img src="" height="1" width="1" alt=""/>
May 17, 2016
SE-Radio Episode 256: Jay Fields on Working Effectively with Unit Tests
Stefan Tilkov talks with Jay Fields, author of the book Working Effectively with Unit Tests, about unit testing in practice. Topics include how to write good unit tests, what mistakes to avoid, and different categories of unit tests. Jay explains the value of unit tests and why you might want to delete them if you [&#8230;]<img src="" height="1" width="1" alt=""/>
May 03, 2016
SE-Radio Episode 255: Monica Beckwith on Java Garbage Collection
Monica Beckwith joins Robert Blumen for a discussion of java garbage collection. What is garbage collection? GC algorithms; history of GC in the java language; fragmentation and compaction; generational strategies; causes of pauses; impact of pauses on application performance; tuning GC; GC on multi-core and large memory machines; should production servers be implemented in non-GC [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 26, 2016
SE-Radio Episode 254: Mike Barker on the LMAX Architecture
Mike Barker talks with Sven Johann about the architecture of the LMAX system. LMAX is a low-latency, high-throughput trading platform. Their discussion begins with what LMAX does; the origins of LMAX; and extreme performance requirements faced by LMAX. They then delve into systems that LMAX communicates with; LMAX users; the two main components of the [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 12, 2016
SE-Radio Episode 253: Fred George on Developer Anarchy
Fred George talks with Eberhard about &#8220;Developer Anarchy&#8221; &#8211; a development approach Fred has been using very successfully in different organizations. Developer Anarchy is a manager-less process. All team members write code. There are no stories. Instead developers figure out how to reach specific business goals. Besides writing code some team members have additional responsibilities: [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 24, 2016
SE-Radio Episode 252: Christopher Meiklejohn on CRDTs
Robert Blumen talks to Christopher Meiklejohn about conflict-free replicated data types (CRDTs). The discussion covers forms of consistency in distributed systems; conflicts and conflict resolution algorithms; consistency and concurrency; the discovery of CRDTs; state-based and operations-based CRDTs; examples of some well-known CRDTs, including counters and sets; time and space complexity; uses of CRDTs in chat [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 15, 2016
SE-Radio Episode 251: Martin Klose on Code Retreats
Martin Klose talks with Eberhard Wolff about Coderetreats &#8211; events where developers practice techniques like test-driven development or refactoring in a safe environment to develop software craftsmanship. Martin talks about how Coderetreats work and why they are a great way to become a better developer. Also he explains the different types and the Global Day [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 03, 2016
SE-Radio Episode 250: Jürgen Laartz and Alexander Budzier on Why Large IT Projects Fail
Alex Budzier of the Oxford Saïd Business School and Jürgen Laartz of McKinsey Berlin join Robert Blumen to discuss their research on large IT project failures. The show covers: What is a &#8220;large&#8221; project? What is the definition of failure? Cognitive biases and project failures. Are some attributes of projects predictive of failure? The catastrophic [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 22, 2016
SE Radio Episode 249: Vaughn Vernon on Reactive Programming with the Actor Model
In this episode, SE Radio Host Stefan Tilkov talks to Vaughn Vernon about the topic of his most recent book, Reactive Messaging Patterns with the Actor Model. Vaughn explains the concepts and history of reactive programming, the actor model and its consequences, actors and their relation to object orientation, a typical approach for designing a [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 11, 2016
SE-Radio Episode 248: Axel Rauschmayer on JavaScript and ECMAScript 6
Johannes Thönes talks to author and speaker Axel Rauschmayer about JavaScript and ECMAScript 6. They first talk about JavaScript’s origin and history. They discuss the standardization of ECMAScript and the version history. Then, they dive into the key concept of JavaScript as a language and explain the new features coming into the language with the [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 28, 2016
SE-Radio Episode 247: Andrew Phillips on DevOps
Sven Johann talks with Andrew Phillips about DevOps. First, they try to define it. Then, they discuss its roots in agile operations, its relationship to lean development and continuous delivery, its goals, and how to get started. They proceed to system thinking and what “You build it, you run it” means for a system when [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 20, 2016
SE-Radio Episode 246: John Wilkes on Borg and Kubernetes
John Wilkes from Google talks with Charles Anderson about managing large clusters of machines. The discussion starts with Borg, Google’s internal cluster management program. John discusses what Borg does and what it provides to programmers and system administrators. He also describes Kubernetes, an open-source cluster management system recently developed by Google using lessons learned from [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 07, 2016
SE Radio Episode 245: John Sonmez on Marketing Yourself and Managing Your Career
Charles Anderson talks to John Sonmez, the author of Soft Skills—“the software developer’s life manual.” They start out discussing the book and what it covers, which is pretty much everything in a developer’s life outside of code. The book contains seven sections; they discuss two of them: “Career” and “Marketing Yourself.” John discusses the value [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 28, 2015
SE-Radio Episode 244: Gernot Starke on Architecture Documentation using arc42
Gernot Starke talks about arc42: an open-source set of templates he developed to document software architecture based on his practical experience with real projects. Also Gernot and host Eberhard then discuss how documenting architecture fits into agile processes and how to find the right amount of documentation for a system. They walk through the different [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 16, 2015
SE-Radio Episode 243: RethinkDB with Slava Akhmechet
Slava Akhmechet and Jeff Meyerson discuss RethinkDB, an open source database for the real-time Web. RethinkDB pushes data to the application rather than requiring the application to poll the database for updates. The discussion begins with the question of why databases need to be rethought&#8211;why is it better to build JSON-pushing into the database layer [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 02, 2015
SE-Radio Episode 242: Dave Thomas on Innovating Legacy Systems
Sven Johann talks with Dave Thomas about innovating legacy systems. Dave clarifies first why legacy systems are both valuable and problematic. Next, they discuss bad systemic and good incremental approaches for innovation of legacy systems; why you shouldn’t rewrite an old system but rather focus on tactical changes to reduce cost or increase productivity within [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 13, 2015
SE-Radio Episode 241: Kyle Kingsbury on Consensus in Distributed Systems
Kyle Kingsbury, known as Aphyr on Twitter and for his blog by the same name, talks to Stefan Tilkov about consensus in distributed systems and about his experience in testing systems to see how they behave in case of failures. In addition to discussing some of the theoretical foundations, such as the CAP theorem, isolation [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 03, 2015
SE-Radio Episode 240: The Groovy Language with Cédric Champeau
Josh Long talks to Cédric Champeau about the latest and greatest in the Groovy JVM language, how it has evolved over the years, and where it&#8217;s going. They start by talking about the existing features in the language, the language&#8217;s history and then move on to discuss where the language is going, how Java 8 [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 22, 2015
SE-Radio Episode 239: Andrew Clay Shafer on Modern Platform-as-a-Service
Josh Long talks to Pivotal&#8217;s Andrew Clay Shafer about the state of platforms-as-a-service (PaaS; like Cloud Foundry). They cover how pass relates to the fast-evolving container-ready distributed runtimes such as Lattice, Kubernetes and Mesos. The discussion starts with a look at what PaaS means and moves on to how the technology has evolved, the community [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 02, 2015
SE-Radio Episode 238: Linda Rising on the Agile Brain
Johannes Thönes talks to Linda Rising, author, speaker and independent consultant, about the Agile Brain. They start by talking about the fixed, talent-oriented mindset and then contrast with the learning-oriented mindset. After establishing the terms, Linda explains how we know which mindset we are in currently and how we can change it for us and others, [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 11, 2015
SE-Radio Episode 237: Go Behind the Scenes and Meet the Team
Show editor Robert Blumen begins with a history of the show, what he has been doing since he became the show editor a year ago, and where he wants the show to go in the future. The remainder of the show is a series of interviews with all of the active hosts, the founder of the [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 10, 2015
SE-Radio Episode 236: Rebecca Parsons on Evolutionary Architecture
Johannes Thönes talks to Rebecca Parsons, Chief Technology Officer at ThoughtWorks, about evolutionary architecture. The practice of evolutionary software architecture means making decisions as late as possible (last responsible moment) and setting up cross-functional requirements that the architecture has to meet (architectural fitness function). In the beginning, Parsons and Thönes introduce the term evolutionary architecture and [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 21, 2015
SE-Radio Episode 235: Ben Hindman on Apache Mesos
Ben Hindman talks to Jeff Meyerson about Apache Mesos, a distributed systems kernel. Mesos abstracts away many of the hassles of managing a distributed system. Hindman starts with a high-level explanation of Mesos, explaining the problems he encountered trying to run multiple instances of Hadoop against a single data set. He then discusses how Twitter uses [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 17, 2015
SE-Radio Episode 234: Barry O’Reilly on Lean Enterprise
Johannes Thönes talks to Barry O&#8217;Reilly, principal consultant at ThoughtWorks, about his recently published book Lean Enterprise. A lean enterprise is a large organization that manages to keep innovating while keeping its existing products in the market. O’Reilly talks about the idea of scientific experiments and the build-measure-learn loop popularized by the lean-startup method. He shares [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 04, 2015
SE-Radio Episode 233: Fangjin Yang on OLAP and the Druid Real-Time Analytical Data Store
Fangjin Yang, creator of the Druid real-time analytical database, talks with Robert Blumen. They discuss the OLAP (online analytical processing) domain, OLAP concepts (hypercube, dimension, metric, and pivot), types of OLAP queries (roll-up, drill-down, and slicing and dicing), use cases for OLAP by organizations, the OLAP store’s position in the enterprise workflow, what “real time” [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 28, 2015
Episode 232: Mark Nottingham on HTTP/2
Stefan Tilkov talks to Mark Nottingham, chair of the IETF (Internet Engineering Task Force) HTTP Working Group and Internet standards veteran, about HTTP/2, the new version of the Web’s core protocol. The discussion provides a glimpse behind the process of building standards. Topics covered include the history of HTTP versions, differences among those versions, and [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 16, 2015
SE-Radio Episode 231: Joshua Suereth and Matthew Farwell on SBT and Software Builds
Joshua Suereth and Matthew Farwell discuss SBT (Simple Build Tool) and their new book SBT in Action. They first look at the factors creating a need for build systems and why they think SBT—a new addition to this area—is a valuable contribution in spite of the vast number of existing build tools. Host Tobias Kaatz, [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 01, 2015
Episode 230: Shubhra Kar on NodeJS
Shubhra Kar of StrongLoop talks to Jeff Meyerson about Node.js. Node allows for server-side JavaScript. Shubra and Jeff explore why Node is so important from three standpoints: isomorphic JavaScript, the single-threaded-concurrency model, and the &#8220;API economy.&#8221; Isomorphic JavaScript apps have their own control and viewing logic, but they share the state and specification of the [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 26, 2015
Episode 229: Flavio Junqueira on Distributed Coordination with Apache ZooKeeper
Flavio Junqueira is the author of Zookeeper: Distributed Process Coordination. Flavio and Jeff Meyerson begin by defining ZooKeeper and talking about what ZooKeeper is and isn’t. ZooKeeper can be thought of as a patch against certain fallacies of distributed computing: that the network is secure, has zero latency, has infinite bandwidth, and so on. With [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 17, 2015
Episode 228: Software Architecture Sketches with Simon Brown
Simon Brown, author of Software Architecture for Developers, talks with Sven Johann about using simple sketches to visualize, communicate and document software architecture. The show starts with a consideration of why sketches are more useful than UML and then continues with the explanation of the C4 model (context, containers, components and classes) and how it fits [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 10, 2015
Episode 227: Eric Brewer: The CAP Theorem, Then and Now
Robert Blumen talks with Eric Brewer, who discovered the CAP (consistency, availability, partition tolerance) theorem. The first part of the show focuses on Brewer&#8217;s original thesis presented at the 2000 ACM Symposium on Principles of Distributed Computing (PODC): What set of problems motivated the formulation of CAP? How was it understood at the time? What are [&#8230;]<img src="" height="1" width="1" alt=""/>
May 27, 2015
Episode 226: Eric Evans on Domain-Driven Design at 10 Years
Eberhard Wolff talks with Eric Evans, the founder of domain-driven design (DDD), about its impact after 10 years. DDD consists of domain-modelling patterns; it has established itself as a sound approach for designing systems with complex requirements. The show covers an introduction to DDD, how the community&#8217;s understanding of DDD has changed in the last [&#8230;]<img src="" height="1" width="1" alt=""/>
May 13, 2015
Episode 225: Brendan Gregg on Systems Performance
Senior performance architect and author of *Systems Performance* Brendan Gregg talks with Robert Blumen about systems performance: how the hardware and OS layers affect application behavior. The discussion covers the scope of systems performance, systems performance in the software life cycle, the role of performance analysis in architecture, methodologies for solving performance problems, dynamic tracing [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 27, 2015
Episode 224: Sven Johann and Eberhard Wolff on Technical Debt
In this episode, Sven Johann and Eberhard Wolff talk about technical debt and how to handle it. They begin by defining external and internal quality and then talk about technical debt as a metaphor for discussing quality with management. They then consider whether technical debt is bad and how to handle it by using Eric [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 01, 2015
Episode 223: Joram Barrez on the Activiti Business Process Management Platform
Josh Long talks to Activiti cofounder Joram Barrez about the wide world of (open source) workflow engines, the Activiti BPMN2 engine, and what workflow implies when you’re building process-driven applications and services. Joram was originally a contributor to the jBPM project with jBPM founder Tom Baeyens at Red Hat. He cofounded Activiti in 2010 at [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 18, 2015
Episode 222: Nathan Marz on Real-Time Processing with Apache Storm
Nathan Marz is the creator of Apache Storm, a real-time streaming application. Storm does for stream processing what Hadoop does for batch processing. The project began when Nathan was working on aggregating Twitter data using a queue-and-worker system he had designed. Many companies use Storm, including Spotify, Yelp, WebMD, and many others. Jeff and Nathan [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 06, 2015
Episode 221: Jez Humble on Continuous Delivery
Johannes Thönes interviews Jez Humble, senior vice president at Chef, about continuous delivery (CD). They discuss continuous delivery and how it was done at Go, CD, and HP firmware; the benefits of continuous delivery for developers; Conway&#8217;s law and cross-functional teams; scary releases and nonscary releases; fix-forward, blue-green deployments, and A/B testing; origins of continuous [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 24, 2015
Episode 220: Jon Gifford on Logging and Logging Infrastructure
Robert Blumen talks to Jon Gifford of Loggly about logging and logging infrastructure. Topics include logging defined, purposes of logging, uses of logging in understanding the run-time behavior of programs, who produces logs, who consumes logs and for what reasons, software as the consumer of logs, log formats (structured versus free form), log meta-data, logging [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 18, 2015
Episode 219: Apache Kafka with Jun Rao
Jeff Meyerson talks to Jun Rao, a software engineer and researcher (formerly of LinkedIn). Jun has spent much of his time researching MapReduce, scalable databases, query processing, and other facets of the data warehouse. For the past three years, he has been a committer to the Apache Kafka project. Jeff and Jun first compare streaming [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 09, 2015
Episode 218: Udi Dahan on CQRS (Command Query Responsibility Segregation)
Guest Udi Dahan talks with host Robert Blumen about the CQRS (command query responsibility segregation) architectural pattern. The discussion begins with a review of the command pattern. Then a high-level overview of CQRS, which consists of a separation of a command processing subsystem that updates a write model from one or more distinct and separate, [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 30, 2015
Episode 217: James Turnbull on Docker
James Turnbull joins Charles Anderson to discuss Docker, an open source platform for distributed applications for developers and system administrators. Topics include Linux containers and the functions they provide, container images and how they are built, use cases for containers, and the future of containers versus virtual machines. Venue: Internet Related Links James’s home page: [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 07, 2015
Episode 216: Adrian Cockcroft on the Modern Cloud-based Platform
Adrian Cockcroft discusses the challenges in creating a dynamic, flexible, cloud-based platform with SE Radio host Stefan Tilkov. After briefly discussing the definition of “cloud computing,” Adrian explains the history behind Netflix’s move to the cloud (which he led). After highlighting some of the differences that have developers and architects must face, Adrian talks about [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 09, 2014
Episode 215: Gang of Four – 20 Years Later
Johannes Thönes talks with Erich Gamma, Ralph Johnson and Richard Helm from the Gang of Four about the 20th anniversary of their book Design Patterns. They discuss the following topics: the definition of a design pattern and each guest’s favorite design pattern; the origins of the book in architecture workshops; the writing of the book [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 20, 2014
Episode 214: Grant Ingersoll on his book, Taming Text
Grant Ingersoll, founder and CTO of LucidWorks, talks with Tobias Kaatz about his book Taming Text: How to Find, Organize, and Manipulate It. They begin by discussing popular existing systems for the automated understanding of contextual information. One such system, IBM Watson, drew attention for its victory in the &#8220;Jeopardy&#8221; game show. They proceed to [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 11, 2014
Episode 213: James Lewis on Microservices
Johannes Thönes talks to James Lewis, principal consultant at ThoughtWorks, about microservices. They discuss microservices’ recent popularity, architectural styles, deployment, size, technical decisions, and consumer-driven contracts. They also compare microservices to service-oriented architecture and wrap up the episode by talking about key figures in the microservice community and standing on the shoulders of giants. Recording [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 29, 2014
Episode 212: Randy Shoup on Company Culture
Tobias Kaatz talks to former Kixeye CTO Randy Shoup about company culture in the software industry in this sequel to the show on hiring in the software industry (Episode 208). Prior to Kixeye, Randy worked as director of engineering at Google for the Google App Engine and as chief engineer and distinguished architect at eBay. [&#8230;]<img src="" height="1" width="1" alt=""/>
Oct 22, 2014
Episode 211: Continuous Delivery on Windows with Rachel Laycock and Max Lincoln
Johannes talks with Rachel Laycock and Max Lincoln from ThoughtWorks about continuous delivery on Windows. The outline includes: introduction to continuous delivery; continuous integration; DevOps and ChatOps; decisions to be taken when implementing continuous delivery on windows; build tools on windows; packaging and deploy on windows; infrastructure automation and infrastructure as code with chef, puppet [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 30, 2014
Episode 210: Stefan Tilkov on Architecture and Micro Services
Micro services is an emerging trend in software architecture that focuses on small, lightweight applications as a means to avoid large, unmaintainable, monolithic systems. This approach allows for individual technology stacks for each component and more resilient systems. Micro services uses well-known communication schemes such as REST but also require new technologies for the implementation. [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 17, 2014
Episode 209: Josiah Carlson on Redis
Josiah Carlson discusses Redis, an in-memory single-threaded data structure server. A Redis mailing list contributor and author, Josiah talks with Robert about the differences between Redis and a key-value store, client-side versus server-side data structures, consistency models, embedding Lua scripts within the server, what you can do with Redis from an application standpoint, native locking [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 05, 2014
Episode 208: Randy Shoup on Hiring in the Software Industry
With this episode, Software Engineering Radio begins a series of interviews on social/nontechnical aspects of working as a software engineer as Tobias Kaatz talks to Randy Shoup, former CTO at KIXEYE, about hiring in the software industry. Prior to KIXEYE, Randy worked as director of engineering at Google for the Google App Engine and as [&#8230;]<img src="" height="1" width="1" alt=""/>
Aug 26, 2014
Episode 207: Mitchell Hashimoto on the Vagrant Project
Charles Anderson talks to Mitchell Hashimoto about the Vagrant open source project, which can be used to create and configure lightweight, reproducible, and portable development environments. Vagrant aims to make new developers on a project productive within minutes of joining the project instead of spending hours or days setting up the developer&#8217;s workstation. The outline [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 28, 2014
Episode 206: Ken Collier on Agile Analytics
Johannes Thönes talks to Dr. Ken Collier, Director of Agile Analytics at ThoughtWorks about Agile Analytics. The outline includes: descriptive analytics, predictive analytic and prescriptive analytics; artificial intelligence, machine learning, data mining and statistics; collaborative filtering; data science and data scientists; data warehousing and business intelligence; online analytical processing (OLAP), extract transform load (ETL), feature [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 18, 2014
Episode 205: Martin Lippert on Eclipse Flux
Eberhard Wolff talks with Martin Lippert of Pivotal about the Eclipse Flux project. This projects is in its early stages — and has a very interesting goal: It aims to put software development tools into the cloud. It is a lot more than just an IDE (integrated development environment) in a browser. Instead the IDE [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 27, 2014
Episode 204: Anil Madhavapeddy on the Mirage Cloud Operating System and the OCaml Language
Robert talks to Dr. Anil Madhavapeddy of the Cambridge University (UK) Systems research group about the OCaml language and the Mirage cloud operating system, a microkernel written entirely in OCaml. The outline includes: history of the evolution from dedicated servers running a monolithic operating system to virutalized servers based on the Xen hypervisor to micro-kernels; [&#8230;]<img src="" height="1" width="1" alt=""/>
May 30, 2014
Episode 203: Leslie Lamport on Distributed Systems
Leslie Lamport won a Turing Award in 2013 for his work in distributed and concurrent systems. He also designed the document preparation tool LaTex. Leslie is employed by Microsoft Research, and has recently been working with TLA+, a language that is useful for specifying concurrent systems from a high level. The interview begins with a [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 29, 2014
Episode 202: Andrew Gerrand on Go
Andrew Gerrand works on the Go programming language at Google. His conversation with Jeff begins with a history of the language, including the details behind how Go was conceived and how the open source community contributes to it. Andrew explains how Go intends to simplify problems which have been motifs as Google has scaled. The [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 14, 2014
Episode 201: Martin Thompson on Mechanical Sympathy
Martin Thompson, proprietor of the blog Mechanical Sympathy, founder of the LMAX disruptor open source project, and a consultant and frequent speaker on high performance computing talks with Robert about computer program performance. Martin explains the meaning of the term “mechanical sympathy,” derived from auto racing, and its relevance to program performance: the importance of [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 19, 2014
Episode 200: Markus Völter on Language Design and Domain Specific Languages
For Episode 200 of Software Engineering Radio, Diomidis Spinellis interviews Markus Völter, the podcast’s founder. Markus works as an independent researcher, consultant, and coach for itemis AG in Stuttgart, Germany. His focus is on software architecture, model-driven software development and domain specific languages as well as on product line engineering. Markus also regularly publishes articles, [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 13, 2014
Episode 199: Michael Stonebraker on Current Developments in Databases
Recording Venue: Skype Guest: Michael Stonebraker Dr. Michael Stonebraker, one of the leading researchers and technology entrepreneurs in the database space, joins Robert for a discussion of database architecture and the emerging NewSQL family of databases. Dr. Stonebraker opens with his take on how the database market is segmented around a small number of use [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 05, 2013
Episode 198: Wil van der Aalst on Workflow Management Systems
Recording Venue: WebEx Guest: Wil van der Aalst Robert Blumen interviews Professor Wil van der Aalst of the Technical University of Eindhoven, one of the world’s leading researchers in business process management and workflow systems. Professor van der Aalst leads off with an overview of the main concepts in the field business processes, business process [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 30, 2013
Episode 197: Lars Vogel on Android
Recording Venue: WebEx Guest: Lars Vogel Lars Vogel, consultant, Eclipse committer, and owner of, gives an overview of the Android operating system. His conversation with Jeff begins with a definition of Android and a brief history. Android is an operating system programmed in Java. It can be found on different types of devices such [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 06, 2013
Episode 196: Personal Kanban with Jim Benson
Recording Venue: WebEx Guest: Jim Benson Jim Benson is CEO of Modus Cooperandi, a collaborative management consultancy in Seattle, Washington. After being steeped in Agile for many years, Jim started working with Kanban and Lean thinking in 2005. In 2008, he started taking this idea further with Personal Kanban, which brings flow based work to the [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 31, 2013
Episode 195: Ellen Gottensdiener and Mary Gorman
Recording Venue: WebEx Guest: Ellen Gottensdiener and Mary Gorman Ellen Gottensdiener and Mary Gorman of EBG Consulting talk with Neil Maiden about agile projects, requirements practices and their new book entitled Discover to Deliver: Agile Product Planning and Analysis. The conversation begins with an exploration of how agile has changed requirements and project practices over the [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 19, 2013
Episode 194: Michael Hunger on Graph Databases
Recording Venue: Skype Guest: Michael Hunger Michael Hunger of Neo Technology, and a developer on the Neo4J database, joins Robert to discuss graph databases. Graph databases fall within the larger category of NoSQL databases but they are not primarily a solution to problems of scale. They differentiate themselves from RDBMS in offering a data model built [&#8230;]<img src="" height="1" width="1" alt=""/>
May 22, 2013
Episode 193: Apache Mahout
Recording Venue: Skype Guest: Grant Ingersoll Grant Ingersoll, founder of the Mahout project, talks with Robert about machine learning.   The conversation begins with an introduction to machine learning and the forces driving the adoption of this technique. Grant explains the three main use cases, similarity metrics, supervised versus unsupervised learning, and the use of large data [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 22, 2013
Episode 192: Open Source Development: Perspectives From Management Science
Recording Venue: Swiss Federal Institute of Technology, Zürich Guest: Georg von Krogh Open source development has had a major impact on both private and public development and use of software. This is an interview with one of the key researchers on open source development, Professor Georg von Krogh of the Swiss Federal Institute of Technology in [&#8230;]<img src="" height="1" width="1" alt=""/>
Feb 13, 2013
Episode 191: Massively Open Online Courses
Recording Venue: Skype Guest: Douglas C. Schmidt In this episode we talk with Douglas C. Schmidt, who is a professor of computer science at Vanderbilt University and a well-respected authority in the fields of patterns and frameworks for concurrent and networked software. In this interview we talk about these topics in the context of massive [&#8230;]<img src="" height="1" width="1" alt=""/>
Jan 07, 2013
Episode 190: Lean (Software) Development
Recording Venue: WebEx Guest: Christof Ebert Christof Ebert, managing director of Vector Consulting Services talks with Frances Paulisch on his insights to how lean applies to product development. The interview centers around five key principles of lean development, namely end-to-end focus on creating value for the customer, eliminating waste, optimizing value streams, empowering people, and [&#8230;]<img src="" height="1" width="1" alt=""/>
Dec 18, 2012
Episode 189: Eric Lubow on Polyglot Persistence
Recording Venue: Skype Guest: Eric Lubow Eric Lubow and Robert discuss polyglot persistence, a term used to describe systems that incorporate multiple specialized persistent stores rather than a single general-purpose database.  Eric provides insights into the forces driving this trend:  including diverse data usage patterns, low latency, and increasing volumes of data.  The emergence of [&#8230;]<img src="" height="1" width="1" alt=""/>
Nov 16, 2012
Episode 188: Requirements in Agile Projects
Recording Venue: Paddington, London Guests: Suzanne Robertson and James Robertson, Atlantic Systems Guild Neil Maiden, Editor of the Requirements column in IEEE Software, talks with Suzanne and James Robertson of the Atlantic Systems Guild about the emergence and impact of agile practices on requirements work. The interview begins with an exploration of how agile practices have [&#8230;]<img src="" height="1" width="1" alt=""/>
Sep 12, 2012
Episode 187: Grant Ingersoll on the Solr Search Engine
Recording Venue: Lucene Revolution 2012 (Boston) Guest: Grant Ingersoll Grant Ingersoll, a committer on the Apache Solr and Lucene, talks with Robert about the  problems of full-text search and why applications are taking control of their own search, and then continues with a dive into the architecture of the Solr search engine. The architecture portion of the [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 18, 2012
Episode 186: Martin Fowler and Pramod Sadalage on Agile Database Development
Recording Venue: Skype Guest: Martin Fowler and Pramod Sadalage In this episode, we talk with Pramod Sadalage and Martin Fowler about database evolution and agile database development. We discuss the basic challenges for working with a database in an agile development culture and how to include database design and most of all, database evolution, in [&#8230;]<img src="" height="1" width="1" alt=""/>
Jun 01, 2012
Episode 185: Dwight Merriman on Replication
Recording Venue: MongoSF, San Francisco Guest: Dwight Merriman As application data size and throughput have outgrown the processing and storage needs of commodity servers, replication has become an increasingly important strategy. In this episode, Robert talks with Dwight Merriman about database replication. Topics covered include replication basics, master-slave versus master-master, failure and recovery, replication versus [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 10, 2012
Episode 184: The Mainframe with Jeff Frey
Recording Venue: Phone Guest: Jeff Frey System z, or the Mainframe, holds most of us in awe — the ultimate computing platform, referenced in Hollywood as well as by those who thought they were dealing with &#8220;legacy&#8221; systems — but what does Mainframe really mean? What does its stack look like? This leading virtualized infrastructure [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 14, 2012
Episode 183: SE Radio becomes part of IEEE Software
SE Radio will continue producing podcasts under the wings of IEEE Software, a respected magazine published by the IEEE Computer Society.<img src="" height="1" width="1" alt=""/>
Feb 07, 2012
Episode 182: Domain-Specific Languages with Martin Fowler and Rebecca Parsons
In this episode, Markus talk with Martin Fowler and Rebecca Parsons about domain-specific languages.<img src="" height="1" width="1" alt=""/>
Jan 25, 2012
Episode 181: Distributed Scrum with Rini van Solingen
In this episode we talk with Rini van Solingen about scrum and agile software development in distributed settings.<img src="" height="1" width="1" alt=""/>
Dec 07, 2011
Episode 180: Leading Agile Developers with Jurgen Appelo
In this episode Michael interviews Jurgen Appelo on the topic of leading agile developers.<img src="" height="1" width="1" alt=""/>
Oct 25, 2011
Episode 179: Cassandra with Jonathan Ellis
Cassandra is a distributed, scalable non-relational data store influenced by the Google BigTable project and many of the distributed systems techniques pioneered by the Amazon Dynamo paper.<img src="" height="1" width="1" alt=""/>
Oct 08, 2011
Episode 178: Akka With Jonas Boner
This episode is a conversation with Jonas Boner about Akka.<img src="" height="1" width="1" alt=""/>
Aug 10, 2011
Episode 177: IBM i (OS/400) Operating System with Steve Will
Recording Venue: Phone Guest: Steve Will IBM i (formerly known as OS/400) is an advanced object-based operating system by IBM that runs thousands of businesses around the world.  Steve Will, the Chief Architect of IBM i speaks with us about the history, technical features, and underlying architecture discussing the concepts of Single Level Store, integrated [&#8230;]<img src="" height="1" width="1" alt=""/>
Jul 06, 2011
Episode 176: Quantum Computing with Martin Laforest
We talk with Martin Laforest about topics ranging from how quantum computing works, which different models of quantum computing are explored, current and future uses of the approach as well as the current state of the art.<img src="" height="1" width="1" alt=""/>
Jun 03, 2011
Episode 175: Game Development with Andrew Brownsword
We discuss characteristics and performance properties of modern games and outline the challenges for software development.<img src="" height="1" width="1" alt=""/>
May 06, 2011
Episode 174: Chip Manufacturing and Waferscanners
Guest: Wilbert Albers Host: Markus In this episode we take a look at microchip production, with a special focus on waferscanners. To do this, we talked with Wilbert Albers of ASML, the leading waferscanner manufacturer in the world. In the episode, we talk about the overall chip production process (from silicon sand over wafer cutting [&#8230;]<img src="" height="1" width="1" alt=""/>
Apr 08, 2011
Episode 173: Feature-Oriented Software Development with Sven Apel – Pt 2
Recording Venue: University of Passau Guest: Sven Apel Host: Stefan In this second episode on Feature-Oriented Software Development (FOSD), Sven Apel gives us an overview of programming language and tool support for FOSD. He introduces the Eclipse-based FeatureIDE which covers important phases of the FOSD process, namely domain implementation as well as configuration and generation. [&#8230;]<img src="" height="1" width="1" alt=""/>
Mar 19, 2011
Episode 172: Feature-Oriented Software Development with Sven Apel – Pt 1
Sven Apel explains why developing software in a feature-oriented manner is so vital for us as software engineers and why objects are simply not enough.<img src="" height="1" width="1" alt=""/>
Feb 19, 2011
Episode 171: Scala Update with Martin Odersky
This episode is an update on the developments around the Scala language.<img src="" height="1" width="1" alt=""/>
Feb 02, 2011
Episode 170: Large Agile Software Development with Bas Vodde
In this episode Michael talks with Bas Vodde about how to apply agile principles to large and distributed development organizations.<img src="" height="1" width="1" alt=""/>
Jan 05, 2011
Episode 169: Memory Grid Architecture with Nati Shalom
In this episode, Robert talks with Nati Shalom about the emergence of large-system architectures consisting of a grid of high-memory nodes.<img src="" height="1" width="1" alt=""/>
Nov 30, 2010
Episode 168: Being a Consultant
This episode is about being a consultant in the software business.<img src="" height="1" width="1" alt=""/>
Oct 22, 2010
Episode 167: The History of JUnit and the Future of Testing with Kent Beck
In this episode we talk with Kent Beck about automated unit testing and JUnit.<img src="" height="1" width="1" alt=""/>
Sep 26, 2010
Episode 166: Living Architectures with John Wiegand
This time we have John Wiegand on the mic for an episode on architectures and agile software development. We talk about the role of architectures in an agile world and why architectures change and need to change over time. We discuss the characteristics of those living architectures, using the Eclipse and the Jazz projects as examples, and the surrounding development methods for such environments.<img src="" height="1" width="1" alt=""/>
Aug 18, 2010
Episode 165: NoSQL and MongoDB with Dwight Merriman
Dwight Merriman talks with Robert about the emerging NoSQL movement, the three types of non-relational data stores, Brewer's CAP theorem, the weaker consistency guarantees that can be made in a distributed database, document-oriented data stores, the data storage needs of modern web applications, and the open source MongoDB.<img src="" height="1" width="1" alt=""/>
Jul 16, 2010
Episode 164: Agile Testing with Lisa Crispin
This episode covers the topic of agile testing. Michael interviews Lisa Crispin as an practionier and book author on agile testing. We cover several topics ranging from the role of the tester in agile teams, over test automation strategy and regression testing, to continuous integration.<img src="" height="1" width="1" alt=""/>
Jun 16, 2010
Episode 163: State of the Union
Announcement regarding the release cycle.<img src="" height="1" width="1" alt=""/>
Jun 03, 2010
Episode 162: Project Voldemort with Jay Kreps
Jay Kreps talks about the open source data store Project Voldemort. Voldemort is a distributed key-value store used by LinkedIn and other high-traffic web sites to overcome the inherent scalability limitations of a relational database. The conversation delves into the workings of a Voldemort cluster, the type of consistency guarantees that can be made in a distributed database, and the tradeoff between client and the server.<img src="" height="1" width="1" alt=""/>
May 16, 2010
Episode 161: Agile Product Management with Roman Pichler
In this episode, we discuss with Roman Pichler how Scrum impacts product management and how agile product management differs from traditional approaches. The topics covered include product owners on large projects and product owner teams, facilitating customer feedback through early and frequent releases, envisioning the product, and creating products with the minimum functionality. Enjoy!<img src="" height="1" width="1" alt=""/>
May 03, 2010
Episode 160: AspectJ and Spring AOP with Ramnivas Laddad
This episode is a conversation with Ramnivas Laddad about aspect-oriented programming (AOP), Aspect J, and Spring AOP. We review the fundamental concepts of AOP, discuss AspectJ (an open source compiler that extends java with support for AOP), and cover the Spring Framework's proxy-based AOP system. Laddad also gives his thoughts on the use cases for AOP and where we are in the technology adoption curve, and updates on the state of the AspectJ project itself.<img src="" height="1" width="1" alt=""/>
Apr 19, 2010
Episode 159: C++0X with Scott Meyers
This episode is a conversation with <a href="">Scott Meyers</a> about the upcoming C++0x standard. We talk a bit about the reasons for creating this new standard and then cover the most important new features, including upport for concurrency, implicitly-typed variables, move semantics, variadic templates, lambda functions, and uniform initialization syntax. We also looked at some new features in the standard library.<img src="" height="1" width="1" alt=""/>
Apr 05, 2010
Episode 158: Rich Hickey on Clojure
This episode is a coversation with Rich Hickey about his programming language Clojure. Clojure is a Lisp dialect that runs on top of the JVM that comes with - among other things - persistent data structures and transactional memory, both very useful for writing concurrent applications.<img src="" height="1" width="1" alt=""/>
Mar 22, 2010
Episode 157: Hadoop with Philip Zeyliger
Philip Zeyliger of Cloudera discusses the Hadoop project with Robert Blumen. The conversation covers the emergence of large data problems, the Hadoop file system, map-reduce, and a look under the hood at how it all works. The listener will also learn where and how Hadoop is being used to process large data sets.<img src="" height="1" width="1" alt=""/>
Mar 08, 2010
Episode 156: Kanban with David Anderson
This episode is part of our series on agile software development. We talk with David Anderson about Kanban, an agile software development method that is quite different from most of the other agile methods out there. We discuss the basic ideas behind Kanban, the differences between Kanban and Scrum and when and why projects can benefit from using Kanban. This episode is done in cooperation with the German magazine ObjektSpektrum (thanks for sharing this interview with us).<img src="" height="1" width="1" alt=""/>
Feb 22, 2010
Episode 155: Johannes Link & Lasse Koskela on TDD
In this episode Johannes Link interviews Lasse Koskela - the author of "Test-Driven" - about test-driven development (TDD). We cover the basics, the rationale behind it and the challenges you face when doing it in more difficult environments.<img src="" height="1" width="1" alt=""/>
Feb 08, 2010
Episode 154: Ola Bini on Ioke
This is a conversation with Ola Bini on his experimental language Ioke. We cover the idea behind the Ioke experiment as well as important language concepts and the thinking behind them.<img src="" height="1" width="1" alt=""/>
Jan 25, 2010
Episode 153: Jan Bosch on Product Lines and Software Ecosystems
This episode is a conversation with Jan Bosch about product line engineering (PLE). Jan has worked in various roles and industries and academia in the context of product lines. In this episode we look at Jan's view of what is next for product lines: software ecosystems. What is their relationship to PLE and how should PLE change to remain relevant?<img src="" height="1" width="1" alt=""/>
Jan 11, 2010
Episode 152: MISRA with Johan Bezem
Our guest Johan Bezem explains the idea behind and the benefits of MISRA. MISRA defines guidelines for C and C++ programming in order to ensure quality. While it got started for embedded automotive development, it is more generally applicable.<img src="" height="1" width="1" alt=""/>
Dec 28, 2009
Episode 151: Intentional Software with Shane Clifford
This episode is a discussion with Shane Clifford, who is a development manager at Intentional Software. We discuss the idea behind intentional programming, key concepts of the technology as well as example uses and a little bit of history.<img src="" height="1" width="1" alt=""/>
Dec 14, 2009
Episode 150: Software Craftsmanship with Bob Martin
This episode is a conversation with "Uncle Bob" Bob Martin about agile software development and software craftsmanship specifically. We talk about the history of the term, the reasons for coming up with it some of the practices and the relationship to other agile approaches. We conclude our discussion with an outlook on some of todays new and hyped programming languages.<img src="" height="1" width="1" alt=""/>
Nov 30, 2009
Episode 149: Difference between Software Engineering and Computer Science with Chuck Connell
Michael discusses with his guest Chuck Connell the differences between software engineering and computer science. What makes software engineering so unpredictable, with so few formal results? And how can we advance the field of software engineering without these results?<img src="" height="1" width="1" alt=""/>
Nov 16, 2009
Episode 148: Software Archaeology with Dave Thomas
Dave explains why reading source code is at least as important a skill as writing source code. He shares approaches for how to get to grips with unknown and undocumented source code even if it is non-trivial in size. He finishes with advice for how to get started reading code.<img src="" height="1" width="1" alt=""/>
Nov 02, 2009
Episode 147: Software Development Manager
Michael and Markus discuss what makes a good R&#038;D manager and how to potentially become an R&#038;D manager. You will learn what some of the essential skills are, what the challenges are, and what the 'mission/vision/strategy thing' is actually good for.<img src="" height="1" width="1" alt=""/>
Oct 19, 2009
Episode 146: Interesting Patterns at EuroPLoP 2009
This episode is a discussion with various authors of patterns reviewed at EuroPLoP 2009. Topics include Product Line Engineering, Distributed Development, Open Source and Embedded Systems<img src="" height="1" width="1" alt=""/>
Oct 05, 2009
Episode 145: Spring in 2009 with Eberhard Wolff
In this episode we discuss the current state of the spring framework. We talk about core features (dependency injection, AOP) but also about the spring universe, i.e. some of the more specific frameworks such as Spring Batch.<img src="" height="1" width="1" alt=""/>
Sep 21, 2009
Episode 144: The Maxine Research Virtual Machine with Doug Simon
In this episode we talk with Doug Simon from Sun Microsystems Laboratories about the Maxine Research VM, a so-called meta-circular virtual machine. Maxine is a JVM that is written itself in Java, but aims at taking JVM development to the next level while using highly integrated Java IDEs as development environments and running and debugging the VM itself directly from the Inspector, an IDE-like tool specialized for the Maxine VM. During the episode we talk about the basic ideas behind Maxine, what exactly "meta-circular" means and what makes it interesting and promising to build a Java VM in Java. We talk about the relationship to Sun's current production JVM (HotSpot) and about ideas and directions for the future of Maxine.<img src="" height="1" width="1" alt=""/>
Sep 07, 2009
Episode 143: API Design with Jim des Rivieres
This episode is a discussion with Jim Des Rivieres about APIs: How to design good APIs, the role of the documentation/specification in APIs, API evolution and other relevant topics.<img src="" height="1" width="1" alt=""/>
Aug 24, 2009
Episode 142: Sustainable Architecture with Kevlin Henney and Klaus Marquardt
This is another episode recorded at <a href="">OOP 2009</a>, thanks to <a href="">SIGS Datacom</a> and programme chair Frances Paulisch for making this possible. Here is the abstract from the conference program: Many software systems have fragile architectures that are based on brittle assumptions or rigid architectures that reduce options and make change difficult. On the one hand, an architecture needs to be fit for the present day, suitable for immediate use, and on the other it needs to accommodate the future, absorbing reasonable uncertainty. However, an approach that is overly focused on today's needs and nothing more can create an inflexible architecture. An approach that becomes obsessed with possible future changes creates an overly complex architecture that is unfit for both today's and tomorrow's needs. Both approaches encourage an early descent into legacy for a system. The considerations presented in this talk reflect an approach that is more about thinking in the continuous present tense than just the present or the future tense. This includes principles from lean thinking, practices common in agile processes and techniques for loosely coupled design.<img src="" height="1" width="1" alt=""/>
Aug 10, 2009
Episode 141: Second Life and Mono with Jim Purbrick
In the first part of this episode we discuss a couple of basics about SecondLife (scaling, partitioning, etc). The second part specifically looks at how the dev team tackled a number of interesting problems in the context of executing their own LSL scripting language on top of Mono.<img src="" height="1" width="1" alt=""/>
Jul 27, 2009
Episode 140: Newspeak and Pluggable Types with Gilad Bracha
This episode is a conversation with <a href="">Gilad Bracha</a> about <a href="">Newspeak</a>, type systems in general and optional/pluggable types in particular. It was recorded during DSL Devcon in the gardens of the Microsoft campus, and thanks to Gilad's "speaking like a book" way of talking it is published completely unedited :-)<img src="" height="1" width="1" alt=""/>
Jul 13, 2009
Episode 139: Fearless Change with Linda Rising
This episode is once again with <a href="">Linda Rising</a>, this time on the book she coauthored with Mary Lynn Manns on introducing ideas into organizations. The talk is another one of the SE Radio Live sessions recorded at <a href="">OOP 2009</a> - thanks to <a href="">SIGS Datacom</a> and programme chair Frances Paulisch for making this possible.<img src="" height="1" width="1" alt=""/>
Jun 29, 2009
Episode 138: Learning as a Part of Development with Allan Kelly
In this episode, Allan shares his insights about how learning is a necessary part of software development. He covers the personal as well as the team and the organizational level and offers practical advice.<img src="" height="1" width="1" alt=""/>
Jun 15, 2009
Episode 137: SQL with Jim Melton
In this episode, Arno talks to Jim Melton about the SQL programming language. In addition to covering the concepts and ideas behind SQL, Jim shares stories and insights based on his many years' experience as SQL specification lead.<img src="" height="1" width="1" alt=""/>
Jun 05, 2009
Episode 136: Past Present and Future of MDA with David Frankel
In this episode, Dirk talks with David Frankel, resident Metamodeller and MDA expert at SAP Labs LLC, SAP's subsidiary in the Silicon Valley. Dave's extensive experience provides a big picture, from the early days of CORBA all the way to current issues that are bugging most enterprise architects' work with MDA.<img src="" height="1" width="1" alt=""/>
May 26, 2009
Episode 135: Introduction to Software Configuration Management with Petri Ahonen
In this episode Michael interviews one of our regular listeners: Petri Ahonen. Petri introduces Software Configuration Management by defining key terms and describing relevant concepts.<img src="" height="1" width="1" alt=""/>
May 16, 2009
Episode 134: Release It with Michael Nygard
This episode is a discussion with Michael Nygard about his book "Release It" which covers aspects of software architecture you often don't think of initially when starting to build a system. Some of the points we discussed were capacity planning, recovery as well as making the system suitable for operation in a data center.<img src="" height="1" width="1" alt=""/>
May 06, 2009
Episode 133: Continuous Integration with Chris Read
In this episode Markus discusses with Chris Read basics and some advanced topics in the space of continuous integration. We cover concepts, some tools, as well as a number of best practices.<img src="" height="1" width="1" alt=""/>
Apr 26, 2009
Episode 132: Top 10 Architecture Mistakes with Eoin Woods
This is a discussion with Eoin Woods about his collection of top 10 software architecture mistakes. Looking at things that don't work is always a good way to learn what you should actually do.<img src="" height="1" width="1" alt=""/>
Apr 16, 2009
Episode 131: Adrenaline Junkies with DeMarco and Hruschka
This episode is an interview with <a href="">Tom DeMarco</a> and <a href="">Peter Hruschka</a> about the new book of the <a href="">Altantic Systems Guild</a>: <a href="">Adrenaline Junkies and Template Zombies: Understanding Patterns of Project Behavior</a>. This is a session recorded live at <a href="">OOP 2009</a>. SE Radio thanks Tom and Peter, <a href="">SIGS Datacom</a> and the programme chair, Frances Paulisch, for their great support!<img src="" height="1" width="1" alt=""/>
Apr 06, 2009
Episode 130: Code Visualization with Michele Lanza
This episode is a discussion about code and metrics visualization with Michele Lanza. Michele invented the Code Cities idea about which he talks in this episode.<img src="" height="1" width="1" alt=""/>
Mar 27, 2009
Episode 129: F# with Luke Hoban
This episode is a discussion about <a href="">F#</a> with Microsoft's F# program manager Luke Hoban.<img src="" height="1" width="1" alt=""/>
Mar 17, 2009
Episode 128: Web App Security with Bruce Sams
The majority of hacker attacks (70 %) are directed at weaknesses that are the result of problems in the implementation and/or architecture of the application. This session shows how you can protect your web applications (J2EE or .NET) against these attacks. The session covers lots of practical examples and techniques for attack. Furthermore, it shows strategies for defense, including a "Secure Software Development Lifecycle". A "Live Hacking" demo rounds it out. <b>This is a session recorded live at <a href="">OOP 2009</a>. SE Radio thanks Bruce, <a href="">SIGS Datacom</a> and the programme chair, Frances Paulisch, for their great support!</b><img src="" height="1" width="1" alt=""/>
Mar 07, 2009
Episode 127: Usability with Joachim Machate
This episode is an introduction to user interface design with Joachim Machate of <a href="">UID</a>. We talk about the importance of user interface design, about its relationship to the overall software engineering process, as well as about UID's process for systematic user interface design.<img src="" height="1" width="1" alt=""/>
Feb 25, 2009
Episode 126: Jetbrains MPS with Konstantin Solomatov
In this episode we take a brief look at Jetbrains' Meta Programming System, a language workbench for creating external DSLs or for extending existing languages (such as Java). In a brief telephone discussion, Konstantin Solomatov explains what the system does and how it works. The system has recently been released into public beta and will be made available under then Apache 2.0 Open Source license.<img src="" height="1" width="1" alt=""/>
Feb 15, 2009
Episode 125: Performance Engineering with Chris Grindstaff
In this episode Martin talks with Chris Grindstaff about the fundamentals of performance engineering. The episode discusses when and how to work on performance of client- and server-side systems, what you should take into account during development to avoid performance issues, typical situations that cause performance problems, and some common pitfalls when analysing performance.<img src="" height="1" width="1" alt=""/>
Feb 05, 2009
Episode 124: OpenJDK with Dalibor Topic
In this episode we look at SUN's open source strategy for the OpenJDK. We discuss challenges in creating such a big open source project, and ways to keep it focused and organized. We discuss what it means for the Java runtime to be adopted as the technological foundation for other programming languages.<img src="" height="1" width="1" alt=""/>
Jan 26, 2009
Episode 123: Microsoft OSLO with Don Box and Doug Purdy
In this episode we discuss Microsoft's OSLO platform with Doug Purdy and Don Box. We briefly discuss what OSLO is in general and then look at the various components of OSLO. We also look at how OSLO fits in with the general Microsoft strategy and how it compares to other DSL/Model-driven approaches. We then look at language modularization and composition and discuss the similarities with XML and Smalltalk. Finally, we discuss possible integrations of OSLO with other MD* approaches and technologies.<img src="" height="1" width="1" alt=""/>
Jan 16, 2009
Episode 122: Interview Janos Sztipanovits
This is a discussion with <a href="">Janos Sztipanovits</a> about <a href="">Cyber Physical Systems</a> and how DSLs are used to approach some of the challenges in that domain. Specifically, in the second part we talk about formalizing DSL semantics.<img src="" height="1" width="1" alt=""/>
Jan 06, 2009
Episode 121: OR Mappers with Michael Plöd
In this episode, Michael Plöd is interviewed about Object-Relational Mapping technology. He talks about the common concepts, compares the range of different tools that go by this name, and goes into the design and architectural consequences of using an OR mapper.<img src="" height="1" width="1" alt=""/>
Dec 27, 2008
Episode 120: OCL with Anneke Kleppe
In this episode we're talking to Anneke Kleppe about model-driven software development and language engineering. We start with her involvement in the creation of the Object Constraint Language (OCL) and discuss the intial expactations, actual experiences, and the place of OCL in the current day. From here, Anneke talks us through her take on the formative years of UML and MDA. From here, we expand to the realm of Domain-Specific Languages and Anneke discusses their place in software engineering in general and why we should expect DSLs in significant numbers to become a common sight.<img src="" height="1" width="1" alt=""/>
Dec 17, 2008
Episode 119: DSLs in Practice with JP Tolvanen
In this episode, Markus talks with Juha-Pekka Tolvanen about using DSLs and code generation in practice. The main part of the episode is the discussion about a number of case studies that show how DSLs and code generation are used in practice. <li><a href="">Omega Tau</a>, Markus' new podcast mentioned in the beginning of the show </li><img src="" height="1" width="1" alt=""/>
Dec 07, 2008
Episode 118: Eelco Visser on Parsers
In this episode we're talking to Eelco Visser about parsing text. We start at the basics - what is parsing? - covering classic tools such as Yacc and classic parsing approaches such as LALR before examining how more recent approaches such as scannerless parsing can make parsing easier and enable previously impractical use cases.<img src="" height="1" width="1" alt=""/>
Nov 27, 2008
Episode 117: Bran Selic on UML
In this episode we're talking to Bran Selic of Malina Software about modelling in general and UML2 in particular. Bran covers the basics of modelling, the history of UML, and what's new in UML2.<img src="" height="1" width="1" alt=""/>
Nov 17, 2008
Episode 116: The Semantic Web with Jim Hendler
In this episode we're talking to James A. Hendler about the semantic web. We start with a definition of the semantic web and by discussing the main ingredients. We then look at (more or less) related topics such as prolog, artificial intelligence, wisdom of the crowds, and tagging. In the next section we discuss the core semantic web technologies: RDF, OWL, inference engines, SPARQL, and GRDDL. We conclude our discussion by looking at the status of the semantic web today and a couple of example applications.<img src="" height="1" width="1" alt=""/>
Nov 07, 2008
Episode 115: Architecture Analysis
During Evolution of a software system, it becomes more and more difficult to understand the originally planned software architecture. Often an architectural degeneration happens because of various reasons during the development phases. In this session we will be looking how to avoid such architectural decay and degeneration and how continuous monitoring can improve the situation (and avoid architectural violations). In addition we will look at "refactoring in the large" and how refactoring can be simulated. A new family of "lint like tools for software architectures" is currently emerging in the marketplace I will show some examples and how they scale and support you in real world projects.<img src="" height="1" width="1" alt=""/>
Oct 28, 2008
Episode 114: Christof Ebert on Requirements Engineering
In this episode we talk to Christof Ebert about requirements engineering. As the name "engineering" suggests, we need to be systematic when working and managing requirements. Christof will structure RE into several activities, namely elicitation (identifying the relevant requirements), specification (clearly describing requirements), analysis (synthesizing a solution), verification and validation (achieving good requirements quality), comittment (allocating requirements to a project, product release or iteration), and management (keeping track of the implementation status of requirements). In this episode we discuss these activities and highlight lots of practical guidance.<img src="" height="1" width="1" alt=""/>
Oct 18, 2008
Episode 113: Building Platforms with Jeff McAffer
In this episode we talk with Jeff McAffer about building platforms. We start with a brief discussion about what a platform is in contrast to a framework or an application. Drawing from his experiences working on the Eclipse platform for years, Jeff talks with us about how to develop platforms, why developing a platform is different from developing an application, what makes a good platform great, and why API design becomes so extremely important for platforms. He provides us with some insights on how the development process and the client collaboration for platform development could look like and what has and has not worked in the past.<img src="" height="1" width="1" alt=""/>
Oct 08, 2008
Episode 112: Roles in Software Engineering II
This is the second part of the two part topic on roles in software engineering. Michael and Markus discuss role definitions in a corporate environment. For several typical roles we give hints on the expected skills, knowledge, and mindset. In this episode we discuss the roles technical lead, technologist, requirements engineer, product manager, and project manager.<img src="" height="1" width="1" alt=""/>
Sep 28, 2008
Episode 111: About Us 2008
In this episode we discuss the status of SE Radio today and introduce the team members. Among other things, Markus discusses stats, sound quality, partners, transcripts, and the cooperation with Hillside Europe. Also, the team members introduce themselves with a one to two minute clip.<img src="" height="1" width="1" alt=""/>
Sep 22, 2008
Episode 110: Roles in Software Engineering I
This is the first part of a two part topic on roles in software engineering. Michael and Markus discuss role definitions in an corporate environment. For several typical roles we give hints on the expected skills, knowledge, and mindset. In this episode we discuss the roles junior developer, senior developer, and software architect.<img src="" height="1" width="1" alt=""/>
Sep 18, 2008
Episode 109: eBay’s Architecture Principles with Randy Shoup
In this episode we discuss with Randy Shoup, Distinguished Architect at eBay, about architectural pinciples and patterns used for building the highly scalable eBay infrastructure. The discussion is structured into four main ideas: partition everything, use asynchrony everywhere, automate everything, and design the system keeping in mind that everything fails at some point in a large distributed system.<img src="" height="1" width="1" alt=""/>
Sep 08, 2008
Episode 108: Simon Peyton Jones on Functional Programming and Haskell
We start our discussion with a brief look at what Haskell is and how a pure functional language is different from non-pure languages. We then look at the basic building blocks and the philosophy of the language, discussing concepts such as the lambda calculus, closures, currying, immutability, lazy evaluation, memoization, and the role of data types in functional languages. A significant part of the discussion is then spent on the management of side effects in a pure language - in other words, the importance of monads. We conclude the episode with a look at Haskell's importance and community today.<img src="" height="1" width="1" alt=""/>
Aug 29, 2008
Episode 107: Andrew Watson on the OMG
This episode is a discussion with Andrew Watson, Technical Director of the Object Management Group. The episode is structured into five parts. We start with the history of the OMG and its early work. Then we look at the set of standards it has been (or is currently) working on. Next is a discussion of the standardization process used by the OMG, including the much-debated topic of compliance testing. We then look at OMG's relationship to other standards bodies (W3C, OASIS). Finally Andrew and I briefly discuss our common passion, gliding :-)<img src="" height="1" width="1" alt=""/>
Aug 19, 2008
Episode 106: Introduction to AOP
This episode is a systematic introduction to Aspect Oriented Programming (in contrast to the <a href="">interview with Gregor Kiczales</a>). We discuss the fundamentals of AOP, define many of the relevant terms and also look at how and where AOP is used in practice, as well as at some current research trends.<img src="" height="1" width="1" alt=""/>
Aug 09, 2008
Episode 105: Retrospectives with Linda Rising
In this episode we're talking to <a href="">Linda Rising</a> about retrospectives. We start by defining what a retrospective is and discuss some of the logistics of making it work for software projects. We then look at the different phases of a retrospective. The main part then is a discussion about some of the practices or games that are used to facilitate the retrospective. We conclude the retrospective discussion with destroying some of the prejudices against it and the relationship to process improvement and CMM. At the end of the interview we talk a little about Linda's current interest: how does the brain work?<img src="" height="1" width="1" alt=""/>
Jul 30, 2008
Episode 104: Plugin Architectures
In this episode we talk with Klaus Marquardt about building systems out of plugins. After briefly introducing the concept of a plugin in contrast to modules and related software engineering concepts, we discuss different views on plugins and different ways of working with plugins for developing software. We are looking at plugins for embedded systems as well as large business systems, at how plugins change the working mode and team organization, and discuss the possibilities of why and when to use plugins for implementing software systems.<img src="" height="1" width="1" alt=""/>
Jul 20, 2008
Episode 103: 10 years of Agile Experiences
In this episode we're talking to <a href="">Jens Coldewey</a> about his experiences in 10 years of introducing agile techniques to project teams. We discuss real-world examples and the lessons learned and strategies derived from them.<img src="" height="1" width="1" alt=""/>
Jul 10, 2008
Episode 102: Relational Databases
In this espisode we take a closer look at relational database systems and the concepts behind them. We start by discussing the relational paradigm, its concepts and ramifications, and go on to architectural aspects.<img src="" height="1" width="1" alt=""/>
Jun 30, 2008
Episode 101: Andreas Zeller on Debugging
In this episode we're talking to <a href="">Andreas Zeller</a>. about debugging. We started the discussion with an explanation of what debugging and how it works in principle. We then briefly discussed the relationship between debugging and testing. Next was the importance of the scientific method for debugging. We then looked as debugging as a search problem, leading to a discussion about delta debugging, the main topic of this discussion. We concluded the discussion by looking at the practical usability of delta debugging and the relationship to other means of automatically finding problems in software.<img src="" height="1" width="1" alt=""/>
Jun 20, 2008
Episode 100: Software in Space
In this episode we're talking to Hans-Joachim Popp, CIO at DLR about software in space. We start out by reviewing some well-known accidents of unmanned space flight that were caused by software faults and use this as a motivation to discuss how to avoid these in the future. We discuss culture, process, techniques and tools that DLR uses to create high-quality software for use in unmanned space systems.<img src="" height="1" width="1" alt=""/>
Jun 10, 2008
Episode 99: Transactions
This episode takes a close look at transactions from different angles, starting with their fundamental properties of Atomicity, Consistency, Isolation, Durability but also investigating advanced topics like distributed or business transactions.<img src="" height="1" width="1" alt=""/>
May 31, 2008
Episode 98: Stefan Tilkov on REST
In this episode we discuss REST (Representational State Transfer) with <a href="">Stefan Tilkov</a>. We started out by discussing the 5 steps to REST: IDs, links, Standard Methods, multiple representations and stateless communication. We then looked at how to use HTTP for REST, and discussed about how to use it for Web Services. We then we discussed whether and how to use REST for enterprise applications, and not just for apps on the internet. We concluded the discussion with a couple of recommendations.<img src="" height="1" width="1" alt=""/>
May 23, 2008
Episode 97: Interview Anders Hejlsberg
In this episode we have the pleasure of talking to <a href="">Anders Hejlsberg</a>, Chief Language Strategist at Microsoft. We started by discussing his more distant past, namely, his involvement with Turbo Pascal and Borland's Delphi. We then looked at the influences Delphi had on C# and how C# evolved from Delphi. In the next section we discussed a couple of general language design issues, among them components and checked vs. unchecked exceptions. Next, we discussed interesting issues about languages of the future, static vs. dynamic typing, functional programming, meta programming as well as the importance of good support for concurrency. We concluded the discussion by looking at the interplay between languages and IDEs.<img src="" height="1" width="1" alt=""/>
May 16, 2008
Episode 96: Interview Krzysztof Czarnecki
This episode is the long-awaited (and much requested) interview with <a href="">Krzysztof Czarnecki</a>, the author, together with Ulrich Eisenecker, of the book <a href="">Generative Programming</a>. In the interview we discussed the state of generative programming today and related it to model-driven development and DSLs. We then talked a little bit about product lines in general. We then discussed his current field of research, which currently focusses on framework-specific modeling languages and non-trivial roundtrip engineering.<img src="" height="1" width="1" alt=""/>
May 08, 2008
Episode 95: The New website with Matt Wall and Erik DoernenBurg
In this episode we talk to Matthew Wall (Guardian News and Media) and <a href="">Erik Doernenburg</a> (<a href="">Thoughtworks</a>) about their work on the new <a href=""></a> website. We discuss the challenge of scalability and interactivity, their use of <a href="">Domain Driven Design</a>, some of the technical building blocks as well as the approaches they use for performance measuring and scalability tuning.<img src="" height="1" width="1" alt=""/>
May 01, 2008
Episode 94: Open Source Business Models with Dirk Riehle
In this episode we're talking to <a href="">Dirk Riehle</a> about open source business models. We started looking at the way OS projects work and defined different kinds of open source projects. In the main part of the discussion we looked at various ways of how to make money with open source: consulting, support contracts, commercial variant of an open source project, etc. We then looked at the chances and risks of each of these approaches. The next part focused on different open source licenses and how they are suitable for open source business. We concluded the episode by discussing a couple of specific questions and loose ends. After the show, Dirk informed me about the following three corrections: Black Duck Software's main product is called <i>protexIP</i> not <i>IP Central</i>, there are presently 70 licenses approved by the <a href="">Open Source Initiative</a>, and EnterpriseDB has so far acquired $37M in venture capital<img src="" height="1" width="1" alt=""/>
Apr 23, 2008
Episode 93: Lessons Learned From Architecture Reviews with Rebecca Wirfs-Brock
In this episode, Markus talks to <a href="">Rebecca Wirfs-Brock</a> on what she has learned from architecture reviews. This is a very complement to the earlier episode on <a href="">architecture evaluation</a>.<img src="" height="1" width="1" alt=""/>
Apr 15, 2008
Episode 92: Introduction to Game Development
In this Episode, Arno talks with Oliver Jucknath about the art of writing computer games. A lot of myth is attached to this area of computing, and while a game technically is just another program, it is written in a different context than typical business applications. This is true at the code level, where aggressive optimization is a focus throughout development. It also applies at the team level, where collaboration between specialists is pronounced. And the business context is different as well, which in turn influences the development effort as a whole.<img src="" height="1" width="1" alt=""/>
Apr 07, 2008
Episode 91: Kevlin Henney on C++
In this episode, we talk with Kevlin Henney about the C++ programming language. We look at the history and the culture of the language, and how it went through several phases in its evolution. We also take a look at some of the special language features of C++ and their overall influence.<img src="" height="1" width="1" alt=""/>
Mar 30, 2008
Episode 90: Product Line Engineering, Pt. 3, with Charles Krueger
In this episode Charles Krueger, a well-known member of the product line engineering community, talks about his long term experiences in the field. Charles is also the founder and CEO of a company that provides tooling for variability management and product derivation. Besides some clarifications on terms like product line architecture and reference architecture, you also learn what kind of preconditions need to exist before product line engineering can be applied successfully.<img src="" height="1" width="1" alt=""/>
Mar 22, 2008
Episode 89: Joe Armstrong on Erlang
In this Episode we're talking about <a href="">Erlang</a> with its creator <a href="">Joe Armstrong</a>. We started by looking at the history of the Erlang language and why it is so relevant today. We then looked at Joe's approach to Concurrency Oriented Programming and its main ingredients: share nothing, lightweight concurrency and pure message passing. We also compared this to the classic shared memory approach to concurrency. We then looked at other interesting aspects of Erlang, such as its functional nature (and why this is important to concurrency) and pattern matching. Next we discussed how to implement distribution and fault tolerance, and we took a look at OTP, the "application server" for Erlang. We concluded the conversation with a littel discussion about how Erlang was designed, it's current community as well as its future.<img src="" height="1" width="1" alt=""/>
Mar 12, 2008
Episode 88: The Singularity Research OS with Galen Hunt
In this episode we talk to <a href="">Galen Hunt</a> about the <a href="">Singularity</a> research OS. Galen is the head of <a href="">Microsoft's OS Research Group</a> and, together with a team of about 30 other researches, has built Singularity. We started our discussion by covering the basics of Singularity: why it was designed, what the goals of the project are as well as some of the architectural foundations of Singularity: software isolated processes, contract-based channels and manifest-based programs. In this context we also looked at the role of the Spec# and Sing# programming languages and the role of static analysis tools to statically verify important properties of a singularity application. We then looked a little bit more closely at the role of the kernel and how it is different from kernels in traditional OSes. In a second part of the discussion we looked at some of the experiments the group did based on the OS. These include compile-time reflection, using hardware protection domains, heterogenerous multiprocessing as well as the typed assembly language We closed the conversation with a look at some of the performance characteristics of Singularity, compatibility with traditional operating systems and a brief look at how the findings from Singularity influence product development at Microsoft.<img src="" height="1" width="1" alt=""/>
Mar 02, 2008
Episode 87: Software Components
In this episode, Michael and Markus talk about software components. We first looked at a couple of attempts at defining what a component is. We then provided our own definition that will be used in the rest of the episode. We then looked at the promises of component-based development: why are components useful? We then discussed some of the typical metadata components should specify to make them useful. We discussed to some extent typical variations in component models. The next topic was the separation of concerns between the component functionality and functionality provided by the component's execution environment (aka. container). We then compared components with other (more or less) related technologies such as OO and SOA. We concluded the episode with the notion of architecture as language, where you use a formal DSL to describe a system's architecture. Components are the basic building block for this approach.<img src="" height="1" width="1" alt=""/>
Feb 21, 2008
Episode 86: Interview Dave Thomas
This episode is an interview with <a href="">Dave Thomas</a> (OTI Dave or Smalltalk Dave, not PragDave). We started our discussion with a look at the (non-)success of objects and components. We then discussed some history behine Eclipse and Dave's role in OTI. We then compared Smalltalk and Ruby and looked at the promises of small and powerful languages such as Lisp. We also discussed the role of (static) type systems and the role of tool support for languages. We then switched gears and looked at what is necessary to scale agile development to the level of large organizations and how techniques from lean production and manufacturing as well as product management can play an important role. In the last part of the interview we looked at the state of research today, and especially the relationship between industry and academia in this area. We concluded the interview with Dave's opinion on what it takes to be a good developer.<img src="" height="1" width="1" alt=""/>
Feb 11, 2008
Episode 85: Web Services with Olaf Zimmermann
In this Episode we're talking about Web Services with IBM's <a href="">Olaf Zimmermann</a>. We mainly focus on the WS-* stack. We also discuss a couple of SOA foundations and architectural decisions that need to be taken when building an SOA using Web Serivces. We also briefly mention the REST vs. WS-* debate.<img src="" height="1" width="1" alt=""/>
Feb 01, 2008
Episode 84: Dick Gabriel on Lisp
In this Episode we're talking with <a href="">Dick Gabriel</a> on <a href="">Lisp</a>. We started by looking at artificial intelligence as the historic context of Lisp, the goals AI tried to reach, and how Lisp was supposed to help reach those. We then discussed the language itself, starting with the Data As Program / Program As Data concept that is a foundation for Lisp. Then we discussed adding a meta-circular interpreter, programming as language development, and the blurred boundary between language and frameworks (because everything uses the same syntax). We then talked about Lisp's type system and the importance of macros to extend the language. The next section concerned CLOS, the Common Lisp Object System and its important concepts: generic functions, multimethods, mixins, and method combination. We also briefly looked at the meta-object protocol but agreed this is a topic for a separate episode. After a discussion about the various dialects of Lisp and Scheme, we concluded the Lisp discussion by explaining why Lisp did not really catch on ("AI Winter") and Lisp's role in today's industry. We ended the episode with a couple of details about Dick's other life as a poet and his Poem a Day effort. Make sure you listen till the end, where we have added a song about Lisp (courtesy of <a href="">Prometheus Music</a>.)<img src="" height="1" width="1" alt=""/>
Jan 22, 2008
Episode 83: Jeff DeLuca on Feature Driven Development
In this episode we talk with Jeff DeLuca about Feature Driven Development (FDD). As one member of the agile methods family FDD is not so famous as Scrum or Extreme Programming but is becoming more and more popular, especially for situations where you have fixed price contracts. As the inventor of FDD Jeff gives short introduction to the method itself, talks about the basic ideas behind FDD and discusses with us how FDD relates to other members of the agile family.<img src="" height="1" width="1" alt=""/>
Jan 12, 2008
Episode 82: Organization of Large Code Bases with Juergen Hoeller
In this episode Eberhard Wolff speaks with Jürgen Höller, the co-found of the Spring framework. Spring is a tremendously successful Java framework so they discuss the design of large frameworks and the issues that arise in the evolution. Jürgen explains the management of dependencies in the framework, how to structure such a framework, how to offer compatibility for the existing user base while evolving the framework and the role of metrics during development.<img src="" height="1" width="1" alt=""/>
Jan 02, 2008
Episode 81: Interview Erich Gamma
This episode is a conversation with <a href="">Erich Gamma</a>. We covered the four things he is known for in chronological order. We started with design patterns and the Gang-of-Four book of which he is the lead author. We then looked at JUnit, the testing framework he coauthored with Kent Beck and how it introduced unit testing to the masses. The next topic is obviously Eclipse, where Erich and his lab in Zürich is responsible for the Java Development Tooling. We also briefly discussed The Eclipse Way, the (obviously) successful process the Eclipse team uses for developing Eclipse itself. Finally, we're looking at Erich's current endeavour, the Jazz project. Jazz is a technology for collaborative software development.<img src="" height="1" width="1" alt=""/>
Dec 23, 2007
Episode 80: OSGi with Peter Kriens and BJ Hargrave
This episode is about <a href="">OSGi</a>, the dynamic module system for Java. Our guests are <a href="">Peter Kriens</a> (OSGI's Technical Director) and <a href="">BJ Hargrave</a> (OSGI's CTO). We'll discuss what OSGi is all about and why and in which contexts it is useful. Additionally we are having a look at the different layers of OSGI and where and how they are used. Other questions discussed are: What means dynamicity in an OSGI environment? Where is OSGI used? What’s the future of OSGI? How does OSGI interact with existing middleware solutions? How can I run several versions of the same JAR at the same time? Where are OSGI’s problems?<img src="" height="1" width="1" alt=""/>
Dec 13, 2007
Episode 79: Small Memory Software with Weir and Noble
In this Episode we're discussing patterns for small memory software with the authors of the like-named book <a href="">Charles Weir</a> and <a href="">James Noble</a>. We look at various aspects of the small memory problem: How can you manage memory use across a whole system? What can you do when you have run out of primary storage? How can you fit a quart of data into a pint pot of memory? How can you reduce the memory needed for your data? How do you allocate memory to store your data structures? Answers to all those questions are provided in this Episode, and of course in their <a href="">book</a>.<img src="" height="1" width="1" alt=""/>
Dec 03, 2007
Episode 78: Fault Tolerance with Bob Hanmer Pt. 2
This is the second part of the discussion on fault tolerance with Bob Hanmer (if you didn't listen to Episode 77, which contains part one, please go back and listen now; this episode builds on that previous one!) We start by discussing a set of error detection patterns. Among are the well-known approaches such as checksums and voting. We then look at error recovery patterns, including restart, rollback or roll forward. The next section looks at error mitigation patterns, which include shedding load and doing fresh work before stale. The last patterns section then looks at fault treatment patterns. We conclude the episode with a small discussion about how to design systems using (these and other) patterns, and with some thoughts on why actually wrote the book.<img src="" height="1" width="1" alt=""/>
Nov 23, 2007
Episode 77: Fault Tolerance with Bob Hanmer Pt. 1
In this Episode we discuss fault tolerance based on the new book by Bob Hanmer. This is the actually the first part of the discussion, the remainder will be published in the next episode of SE Radio. We start by discussing some of the context for fault tolerant systems and the imperfect world assumption. We then discuss a number of terms we will need when discussing the fault tolerance patterns. We then discuss the fault tolerance mindset and connect fault tolerance to a number of related subject areas, such as software quality. We then discuss the shared context for the patterns that follow, among them the important observation that fault tolerance does not come for free! Finally we provide an overview over the different sections covered in the book and start the detailed discussion of the patterns by looking at the Architectural Patterns section. The next episode will discuss the remaining patterns in the book.<img src="" height="1" width="1" alt=""/>
Nov 13, 2007
Episode 76: Special Episode on the Patterns Journal
In this special Episode we briefly discuss the upcoming <a href="">Patterns Journal</a> with the two editors, Ralph Johnson and James Noble.<img src="" height="1" width="1" alt=""/>
Nov 09, 2007
Episode 75: The New Website
In this special Episode we briefly discuss our new website. We will migrate to our new website during the coming week. If you experience any difficulties, <a href="">contact the team</a> or temporarily go to the old site at <a href=""></a>.<img src="" height="1" width="1" alt=""/>
Nov 04, 2007
Episode 74: Enterprise Architecture II
Enterprise Architecture is already common practice in most Fortune 100 companies. As the topic is comparably young, knowledge about it is not so widespread in the Software Architects Community, who deals mostly with project architectures. In this episode Alex speaks with Wolfgang Keller who has practical experience as an enterprise architect and has written a book on the topic. He is a Partner with BusinessGlue Consulting. They are specializing in the relationship between EAM and SOA. This episode gives a rough overview what Enterprise Architecture actually is touches the standards in the field and also gives hints on the practical work of Enterprise Architects.<img src="" height="1" width="1" alt=""/>
Nov 03, 2007
Episode 73: Real Time Systems with Bruce Powel Douglass
This episode is a conversation with Bruce Powel Douglass on real time systems. We started by discussing what real time software is, and explored the difference between hard and soft real time. We then looked at different scheduling strategies, and the meaning of terms like urgency and importance in the context of scheduling. Next was a discussion of typical architectural styles for real time systems and how architectures are described in this context. This led us to a discussion about the importance of modeling, formalisms and languages as well as the role of automatic code generation from those models. We then looked at how to model QoS aspects and the role of SysML for modeling real time systems. We then had a brief look at which programming languages are used these days for real time systems and the role of static analysis to determine various properties of those programs in advance. The last part of the discussion focused on some best practices for building real time systems, the challenges in distributed real time systems and how real time systems can be tested effectively.<img src="" height="1" width="1" alt=""/>
Oct 24, 2007
Episode 72: Erik Meijer on LINQ
This episode is a discussion with Erik Meijer on LINQ. This is a relatively technical discussion about the following topics: what is LINQ, what are the common abstractions between the different data structures one can access with LINQ, what is the relationship to established languages for querying, how does the integration into the type system of the host language work, how to specify the mapping between the language level classes and the data, and how optimizations are implemented (lazy loading, prefetching, etc.).<img src="" height="1" width="1" alt=""/>
Oct 17, 2007
Episode 71: Survey Results
In this Episode I talk about the results of the listener survey and reply to some of the suggestions and criticism expressed in survey replies.<img src="" height="1" width="1" alt=""/>
Oct 13, 2007
Episode 70: Gerard Meszaros on XUnit Test Patterns
In this episode we talk with Gerard Meszaros about problems and challenges doing unit testing in real-world projects. Starting from a short discussion about the importance of automated unit testing we spend most of this episode to talk about every day problems doing unit testing and how those problems can be solved. Based on this book on xunit testing patterns, Gerard talks about his experiences with unit test smells as an analogy to code smells. He describes an impressive set of unit testing patterns to overcome those difficult testing situations and illustrates them with nice examples everybody doing unit testing will feel familiar with.<img src="" height="1" width="1" alt=""/>
Oct 04, 2007
Episode 69: Nico Josuttis on SOA (SOA Pt. 3)
This Episode is part five in our (probably ongoing) series on service oriented architecture. In this episode we talk to Nico Josuttis, who has recently published a <a href="">book </a>on this topic. As its title "SOA in Practice" suggests, it is a very pragmatic book based on Nico's experience as architect and project lead in a number of enterprise-level projects - not all of them had been called SOA, since they at the time the term was not yet coined. The episode discusses some technical aspects of SOA (such as loose coupling, messaging and ESBs), but mainly focusses on non-technical aspects of implementing an SOA.<img src="" height="1" width="1" alt=""/>
Sep 24, 2007
Episode 68: Dan Grossman on Garbage Collection and Transactional Memory
This episode features a discussion with <a href="">Dan Grossman</a> about an essay paper he wrote for this year's <a href="">OOPSLA</a> conference. The paper is about an analogy between garbage collection and transactional memory. In addition to seeing the beauty of the analogy, the discussion also serves as a good introduction to transactional memory (which was mentioned in the <a href="">Goetz/Holmes episode</a>) and - to some extent - to garbage collection.<img src="" height="1" width="1" alt=""/>
Sep 14, 2007
Episode 67: Roundtable on MDSD and PLE
This is a roundtable discussion on model-driven software develoment and product line engineering. It was recorded at the <a href="">Model-Driven Development and Product Lines: Synergies and Experience</a> conference in October 2006 in Leipzig. The panelists are: <ul> <li>Axel Uhl, <a href="">SAP</a> </li><li>Danilo Beuche, <a href="">Pure Systems</a> </li><li>Juha Pekka Tolvanen, <a href="">MetaCase</a> </li><li>Tom Stahl, <a href="">b+m</a> </li><li>Ruediger Schilling, <a href="">Delta Software Technology</a> </li></ul><img src="" height="1" width="1" alt=""/>
Sep 04, 2007
Episode 66: Gary McGraw on Security
This episode features an interview with the software security expert Gary McGraw. Gary explains why this topic is so important and gives several security deficiencies examples that he found in the past. The second half of the interview is about his latest book 'Exploiting Online Games' where he explains how online games are hacked and why this is relevant to everybody, not only gamers in their 'First Life'.<img src="" height="1" width="1" alt=""/>
Aug 24, 2007
Episode 65: Introduction to Embedded Systems
This episode is an introduction to embedded system. It is an introduction in the sense that we cover many topics very briefly: upcoming episodes will provides details for many of these topics. We start by discussing what an embedded system is an what the important characteristics are. Among them is limited resources, concurrency, real time and hardware integration. We also discuss the range of embedded systems from small mirocontrollers to mobile phones to distributed real time embedded systems. We also cover the different business case for embedded systems (per unit cost) and some non-trivial developmental aspects (cross compilation debugging, heisenbugs). We close the episode by discussing some important architectural styles (time triggered, event-based, microkernels, state machines) as well as tools of the trade: languages, operating systems and middleware.<img src="" height="1" width="1" alt=""/>
Aug 14, 2007
Episode 64: Luke Hohmann on Architecture and Business
In this episode we talk about the relationship between software architecture and the business. Based on his book, <a href=";s=books&#038;st=*">Beyond Software Architecture</a> we discuss how things such as branding, licensing, updating or different deployment scenarios influence the technical architecture of a system. We also discuss issues such as portability that add a huge amount of complexity, although from a business perspective it often does not make much sense. In the second part of the interview we discuss how the technical team and the business team can improve the way they work together. We look at some of the games (such as <em>Buy a Feature</em> or <em>Give them a Hot Tub</em>) from his new book <a href=";v=glance&#038;n=283155">Innovation Games</a>, which discusses how to use collaborative play to be more creative and innovative in product creation.<img src="" height="1" width="1" alt=""/>
Aug 04, 2007
Episode 63: A Pattern Language for Distributed Systems with Henney and Buschmann
In this Episode we talked about the new POSA 4 book which has recently been published. We talk to two of the authors, Kevlin Henney and Frank Buschmann (the third author, Doug Schmidt was not available - and he had also been on the podcast a couple of times :-)). The book contains a pattern language for distributed systems. It contains 114 patterns that had been published before by many different other authors. The patterns have been rewritten to form a consistent language. We basically talked through the different sections of the book, which gives a really good overview over the challenges and the solutions of building distributed systems. These sections include From Mud to Structure, Distribution Infrastructure, Event Demultiplexing and Dispatching, Interface Partitioning, Component Patitioning, Application Contrl, Concurrency, Synchronization, Object Interaction, Adaptazion and Extension, Modal Behaviour, Resource Management and finally, Database Access. The book references several other previous works (as listed below). Interestingly, many of these referenced works and authors have also been discussed previously on the podcast. Here are the back references: <ul> <li><a href="">Domain Driven Design, Eric Evans</a></li> <li><a href="">Messaging Patterns, Gregor Hohpe</a></li> <li><a href="">POSA 2 Patterns, Doug Schmidt</a></li> <li>Concurrency: <a href="">Part 1</a>, <a href="">Part 2</a>, <a href="">Part 3</a> and the interview with <a href="">Goetz and Holmes</a></li> <li>Remoting Patterns <a href="">Part 1</a> and <a href="">Part 2</a></li> <li><a href="">POSA3, Resource Management </a></li> </ul><img src="" height="1" width="1" alt=""/>
Jul 25, 2007
Episode 62: Martin Odersky on Scala
In this Episode we talk about the Scala language with its creator Martin Odersky. Scala is a language that fuses object oriented and functional programming. Martin started out by providing a two-minute overview over the language, and then talked a little bit about its history. We then discussed the basics of functional programming. The main part of the episode features a discussion of some of the important features of the Scala language: <ul> <li>Case Classes and Pattern Matching </li><li>Multiple Inheritance and Compound Types, Traits, Mixins </li><li>Closures </li><li>Functions as types, "Function pointers", Anonymous functions </li><li>Higher Order Functions </li><li>Currying </li><li>(Sequence) Comprehensions </li><li>Generics </li><li>Type Bounds (Upper, Lower) </li><li>Static/Dynamic Typing, Type Inference </li><li>Operators </li><li>Implicits </li></ul> We then talked about Scala's actors library, a highly scalable concurrency package. The last part of the episode covered some more general topics, such as where and how Scala is used today, IDE support and the user and developer community. We concluded the episode by looking at current development and next steps in Scala language evolution.<img src="" height="1" width="1" alt=""/>
Jul 15, 2007
Episode 61: Internals of GCC
This show takes a behind-the-scenes look at compilers and their inner workings, using the Gnu compiler collection (GCC) as an example. Arno interview Morgan Deters, covering all steps from the parsing of different programming languages to machine independenet optimizations and generating processor specific binary code.<img src="" height="1" width="1" alt=""/>
Jul 05, 2007
Episode 60: Roman Pichler on Scrum
This episode features Scrum, a very popular Agile software development framework. We interview Roman Pichler, a Certified ScrumMaster Trainer and independent consultant. Roman explains the principles behind Scrum, its roles and its key practices. He also answers FAQs. This episode continues our track on software development processes discussing an additional Agile method. Roman is currently writing a book on Scrum in German that provides more in-depth information of the topics discussed in the podcast. The book will be available in autumn 2007 published by d.punkt (Heidelberg, Germany).<img src="" height="1" width="1" alt=""/>
Jun 25, 2007
Episode 59: Static Code Analysis
This episode is a discussion with Jonathan Aldrich (Assistant Professor at CMU) about static analysis. The discussion covered theory as well as practice and tools. We started with an explanation of what static analysis actually is, which kinds of errors it can find and how it is different from testing and reviews. The core challenge of such an analysis tool is to understand the semantics of the program and reduce its possible state space to make it analysable - in effect reconstructing the programmer's intent from the code. The user can "help" the tool with this challenge by using suitable annotations; also, languages could do a better job of being analysable. The conceptual discussion was concluded by looking at the principles of static analysis (termination, soundness. precision) and how this approach relates to model analysis. The second more practical part started out with a discussion of how Microsoft successfully uses static analysis in their Windows development. We then discussed some of the tools available; these include Findbugs, Coverity, Codesonar, Clockwork, Fortify, Polyspace and Codesurfer. To conclude the discussion of tools, we discussed the commonalities and differences with architecture visualization tools as well as metrics and heuristics. Part three of the discussion briefly looked at how to introduce static analysis tools into an organization's development process and tool chain. We concluded the discussion by looking at situations where static analysis does not work, as well as at the FLUID research project at CMU.<img src="" height="1" width="1" alt=""/>
Jun 16, 2007
Episode 58: Product Line Engineering Pt. 2
Variability is one of the key concerns in software product line engineering. The episode introduces the concepts of structural and non-structural (or configurative) variability. It also discusses how to find and model variability, and especially how to implement variability in the solution artifacts. Michael and Markus discuss a series of variability mechanisms that can be used with today's programming languages and technologies.<img src="" height="1" width="1" alt=""/>
Jun 06, 2007
Episode 57: Compile-Time Metaprogramming
This episode is about compile-time metaprogramming, and specifically, about implementing DSLs via compile-time metaprogramming. Our guest, <a href="">Laurence Tratt</a>, illustrates the idea with his (research) programming language called <a href="">Converge</a>. <br /><br /> We started by talking about the importance of a custom syntax for DSL and took a brief look at the definition of DSLs by a chap called Paul Hudak. We then briefly covered the disctinction between internal and external DSLs. <br /><br /> More to the point of this episode, we discussed the concept of compile-time metaprogramming, and the language features necessary to achieve it: in converge, these concepts are called splice, quasi-quote and insertion. We then looked at how the Converge compiler works, and at the additional features that are required to implement DSLs based on the metaprogramming features mentioned above. Using an example, we then walked through how to implement a simple DSL. <br /><br /> Looking at some of the more technical details, we discussed the difference between the parse tree and the abstract syntax tree and at different kinds of parsers - specifically, the Earley parser used by Converge. In multi-stage languages (i.e. languages that execute programs and meta programs) error reporting is important, but non trivial. We discussed how this is done in Converge. We finally looked at how to integrate Converge's expression language into your DSL and how to package DSL definition for later use. <br /><br /> The last segment look at the process of implementing a DSL in converge and about some of the history and practical experience with Converge. Lessons learned from building Converge wrap up the episode.<img src="" height="1" width="1" alt=""/>
May 27, 2007
Episode 56: Sensor Networks
In this episode we discuss sensor networks with our guest Steffen Schaefer, who is the Technical Thought Leader for Sensors &#038; Actuator Solutions at IBM. The discussion resolves around the TREC device, which can be mounted on containers to track them on their journey over seas, railway tracks and roads. The TREC is a small embedded device developed by Steffen's employer, IBM, that has various sensors and communications channels. <br /><br /> In the episode we first talked about container transport in general, and then looked at how the TREC device works - specifically, it's hardware, software and power management. We then looked at the necessary backend infrastructure. The main part of the discussion covered the communication between the device and the backend, using technologies such as Zigby, GSM and satellite communications. We also looked at the middleware infrastructures used, such as the MQtt messaging tool. <br /><br /> We closed the episode with a little discussion of the "Internet of Things" and some discussion about embedded software devleopment in general. Note that SE Radio will feature more embedded topics in the future - an introduction to embedded development will be put online soon.<img src="" height="1" width="1" alt=""/>
May 17, 2007
Episode 55: Refactoring Pt. 2
In the first episode on Refactoring we talked about the basic ideas behind refactoring and some base principles why refactoring is a key part of software engineering. Now we move on to more complicated refactorings and discuss three major situations, their problems and possible solutions: advanced refactorings in large projects that can hardly be finished in a few minutes or hours and refactoring in larger teams. Also covered are the refactoring of published APIs and how merciless refactoring could be aligned with backward compatibility of published APIs, and refactorings that affect more than just code like for example database schemas.<img src="" height="1" width="1" alt=""/>
May 07, 2007
Episode 54: Interview Frank Buschmann
This episode is an interview with Frank Buschmann, one of the pioneers of the pattern movement in Europe. Michael and Frank discuss how it all began: the first conferences on patterns and the first publications by the Gang-of-Four and the POSA 1 team. Frank then elaborates on the new volumes in the Pattern-Oriented Software Architecture book series - POSA 4 and POSA 5 - and gives some examples from the books. The episode concludes with a general discussion on software design and architecture, and best practices on software development.<img src="" height="1" width="1" alt=""/>
Apr 27, 2007
Episode 53: Product Line Engineering Pt. 1
Michael Kircher and Markus Voelter introduce the topic of software product line engineering. They motivate when and why product lines are important to consider and what makes them so special. Further, they introduce some key terminology, such as platform, core asset, feature model, commonality, and variability.<img src="" height="1" width="1" alt=""/>
Apr 17, 2007
Episode 52: DSL Development in Ruby
In this episode, we're talking to <a href="">Obie Fernandez</a> about agile DSL development in Ruby. We started our discussion by defining what a DSL is, the difference between internal and external DSLs as well as the importance of the flexibly syntax of the host language in order to make DSLs worthwhile. We then looked at a couple of real world examples for DSLs, specifically, at Business Natural Languages. We then progressed to the main part of the discussions, which centered around the features of Ruby that are important for building DSLs. These include the flexible handling of parentheses, symbols, blocks as well as literal arrays and hashes. We then discussed Ruby's meta programming feautures and how they are important for building DSLs: instantiation, method_missing callback, class macros, top level functions and sandboxing. Features like eval, class_eval, instance_eval and define_method are also important for DSLs in Ruby, as well as using alias_method for simple AOP.<img src="" height="1" width="1" alt=""/>
Apr 07, 2007
Episode 51: Design By Contract
In this episode, Arno and Michael take a look at Design by Contract, a programming technique formalized by Bertrand Meyer. The idea is that an interface is more than method signatures - it is also about specifying the expected behavior that implementations must provide. While some languages include direct support for this style of programming, it is a useful mindset when desiging interfaces even without such language features.<img src="" height="1" width="1" alt=""/>
Mar 28, 2007
Episode 50: Announcements and Requests
This is another episode where we mainly announce topics related to the podcast itself.<img src="" height="1" width="1" alt=""/>
Mar 22, 2007
Episode 49: Dynamic Languages for Static Minds
In this Episode we talk about dynamic languages for statically-typed minds, or in other words: which are the interesting features people should learn when they go from a langauge such as Java or C# to a language like Python or Ruby. We used Ruby as the concrete example language. <br /><br /> We started the discussion about important features with the concept of dynamically changing an object's type and the idea of message passing. We then looked at the concepts of blocks and closures. Next in line is a discussion about functions that create functions as well as currying. This lead into a quick discussion about continuations. Open classes, aliasing and the relationship to AOP was next on our agenda. <br /><br /> We then looked considered a somewhat more engineering-oriented view and looked at the importance of testing and what are the best steps of getting from static programming to dynamic programming. Finally, we discussed a bit about the current (as of October 2006) state of dynamic languages on mainstream platforms.<img src="" height="1" width="1" alt=""/>
Mar 18, 2007
Episode 48: Interview Dragos Manolescua
In this Episode we discuss software architecture evaluation with <a href="">Dragos Manolescu</a>, an architect at Microsoft's <a href="">patterns &#38; practices group</a>. <br /><br /> We start off the discussion by trying to define what software architecture evaluation is and when and you want to evaluate an architecture in the system's lifecycle. We then make sure evaluators set the expectations for the evaluation process right - it is important to understand that architecture evaluation is typically not primarily a review of the technology decisions made for the architecture. <br /><br /> We then discuss the kinds of notations that are useful for describing architectures, and which of these are especially helpful for the evaluator. Next we look at the core of the architecture evaluation task, namely, the integration of the various stakeholders and their views. We also discuss real reviews from reviews that are staged "for show" only. <br /><br /> Next in the discussion is a brief look at the tools you can use for architecture evaluation, as well as a closer look at the various methods for achitecture evalualtion proposed by the <a href="">Software Engineering Institute (SEI)</a>. We conclude the discussion by outlining how architecture evaluation fits into an agile development process. <br /><br /> ... and finally, we briefly plug the <a href=";camp=14573&#038;creative=327641&#038;linkCode=as1&#038;creativeASIN=0321321944&#038;adid=0CSB8D3GZ99Q2V6QA1N6&#038;">PLOPD5</a> book, on which Dragos, Markus and James Noble have been working recently :-)<img src="" height="1" width="1" alt=""/>
Mar 08, 2007
Episode 47: Interview Grady Booch
In this Episode we are happy to talk to <a href="">Grady Booch</a>. We started off by discussing his <a href="">Architecture Handbook</a>, how it came into being, the progress, and how it will look like once it's finished. In this context we also looked at the issue of how to distinguish architecture from design. We then asked him about how "professional" software architecture is these days, as well as about the ubiquity of software product lines in industry. The next couple of minutes looked at the question of whether software development is an engineering discipline, craftsmanship or an art form, and we discussed the key qualifications of software developers. Grady then elaborated on the problems of developing in large teams as well as the potential limits of complexity we can tackle with software. <br /> <br /> We then got back to a more technical discussion, where we looked at model-driven development, DSLs, etc. and the role of the UML in that context. Next was a discussion about scripting languages, and the current trend towards new languages. We then looked at component marketplaces and other forms of reuse, as well as the importance of OO these days and the relevance of AO. We concluded with a (small) outlook to the future.<img src="" height="1" width="1" alt=""/>
Feb 26, 2007
Episode 46: Refactoring Pt. 1
Changeable software has been a goal of several technique in software engineering. Probably the most important is Refactoring, changing the code without changing the behaviour (or at least without breaking the tests). In this episode Eberhard talks with Martin Lippert about this technique. The episode covers a history of refactoring, a definition of code smells and how to actually do refactorings in your everyday work. Also some advanced topics - like the ROI of Refactoring or Refactoring in dynamic languages - are covered.<img src="" height="1" width="1" alt=""/>
Feb 16, 2007
Episode 45: Round Table on Ultra Large Scale Systems
This Episode is a round table discussion about Ultra-Large Scale Systems. In 2006, a number of authors (among them our guests Linda Northrop, Doug Schmidt, Kevin Sullivan, and Gregor Kiczales) have produced a report that addressed the following question: <i>Given the issues with today's software engineering, how can we build the systems of the future that are likely to have billions of lines of code? </i> In this episode, our guests discuss many of the issues that arise from this kind of system and provide an overview of the research areas that should be investigated in order to tackle the challenge. If you want to get more detailed information, you can read the ULS Report (PDF).<img src="" height="1" width="1" alt=""/>
Feb 06, 2007
Episode 44: Interview Brian Goetz and David Holmes
This is another episode on concurrency. We talk to two experts in the field, Brian Goetz and David Holmes about aspects of concurrency we hadn't really covered before. We start out by discussing liveness and safety and then continue to talk about synchronizers (latches, barriers, semaphores) as well as the importance of agreeing on protocols when developing concurrent applications. We then talked about thread confinement as a way of building thread-safe programs, as well as using functional programming and immutable data. The next set of topics covers various ways of how compilers can optimize the performance wrt. to concurrency, talking about techniques such as escape analysis as well as lock elision and coarsening. We then covered how to test concurrent programs and the consequences of the Java memory model on concurrency. We then went on to look at some more advanced topics, namely, lock-free programming and atomic variables. We also briefly discussed the idea of transactional memory. Finally, we looked at how better language support - specifically, a more declarative style of concurrent programming as e.g. in the Fortress language - can aid in improving the quality of concurrent programs.<img src="" height="1" width="1" alt=""/>
Jan 27, 2007
Episode 43: eXtreme Programming Pt.2
This is the second part of our two part discussion of the eXtreme Programming development methodology. While the first part introduced the values, principles and basic practices, this time Arno and Alex speak about the practices that set the context for an XP project and how to get started, and they discuss some FAQs they often get when introducing XP.<img src="" height="1" width="1" alt=""/>
Jan 17, 2007
Episode 42: Interview Gregor Hohpe
In this episode, Gregor Hohpe gives us a great introduction to enterprise messaging based on his EAI Patterns book. Before we started discusssing the patterns in his book, we characterized messaging and talked about the various interaction styles. We also contrasted the messaging architectural style with an RPC based approach. We then took a look at the relationship to SOA, the role of contracts and the orchestration-vs-choreography discussion. We briefly discussed the nature of pattern languages before we then went through the different section in the book. There are six main sections: channel, message, routing, transfomation, endpoint as well as management and monitoring. We discussed the core patterns for each of these sections. This should give listeners a good high-level view of message-based systems. We concluded the discussion by looking at the critical importance of systems management and monitoring.<img src="" height="1" width="1" alt=""/>
Jan 07, 2007
Episode 41: Architecture Patterns (Architecture Pt. 4)
This is the fourth and final episode on the fundamentals of Software Architecture. We talk mainly about architectural styles and patterns, as introduced in the POSA 1 Book. We also discuss a little bit the process of actually using those patterns for architecting systems.<img src="" height="1" width="1" alt=""/>
Dec 27, 2006
Episode 40: Interview Werner Vogels
This episode is an interview with Werner Vogels, the CTO of We first talked about what scalability is, and which aspects there are to scalability. We then took a brief look at the technologies used at amazon, specifically, the middleware systems and the issue of vendor lock-in. Web services, and the role of SOA was the next topic. Then we covered what a service actually is add Werner explained the term "pizza teams". Testing and Deployment was the next topic followed by a look at architectural characteristics of scalable systems, the value of simplicity and the CAP theorem. We concluded the discussion with a brief look at the future of distributed systems<img src="" height="1" width="1" alt=""/>
Dec 16, 2006
Episode 39: Interview Steve Vinoski
This episode is an interview with Steve Vinoski. Steve works as the Chief Engineer for IONA. He's what you'd call a middleware guru, he was for example deeply involved with CORBA. So, this interview centers mainly around middleware. We begin by talking about his own history wrt. middleare and ORBs and how ORBs evolved over time. We then talked about whether coarse-grained, stateless components might be a better abstraction for distributed systems than "objects". We then covered the future of CORBA, it's use in ethe embedded space as well as the practical relevance of the POSA patterns when building ORBs. Then we switched topics and addressed the role of web services as a "middleware middleware" and the maturity of WS-* specifications. We then looked at what Steve is working on these days, which is e.g. the Advanced Message Queueing Protocol (AMQP) as well as dynamic languages. We concluded the interwiew with his view on SOA.<img src="" height="1" width="1" alt=""/>
Dec 06, 2006
Episode 38: Interview James Noble
Designers, programmers, engineers, we must all return to programming! Very few programmers tend to see their (sometimes rather general) difficulties as the core of the subject and as a result there is a widely held consensus as to what programming is really about. If these notes prove to be a source of recognition or to give you the appreciation that we have simply written down what you already know about the programmer's trade, some of our goals will have been reached.<img src="" height="1" width="1" alt=""/>
Nov 26, 2006
Episode 37: eXtreme Programming Pt.1
This is the first of two episodes where Arno and Alex discuss eXtreme Programming in se-radio's development process track. eXtreme Programming (XP) revolutionized the way of thinking about software development methodologies and helped to make the agile movement popular. In this episode they discuss the very basics of XP, its value system, principles and the basic practices used in an XP project. The second episode will continue the introduction adding the missing practices and how to introduce XP into projects.<img src="" height="1" width="1" alt=""/>
Nov 18, 2006
Episode 36: Interview Guy Steele
This episode is an interview with Guy L. Steele Jr.. Guy is a Sun Fellow and heads the Programming Language Research Group within Sun, and a generally well known "programming language guy" (see here for details). We briefly talk about Lisp and the resurgence of dynamic languages before we delve into the main topic, the Fortress programming language he is working on. Fortress is a language intended to replace Fortran as a scientific computing language. We talk about how mathematical notations, syntax extensio and built-in support for parallelism are crucial properties of such a language. We then briefly talk about potentials for compiler optimization before taking a closer look at the type system (static typing, type inference), traits and contract specification as well as first-class support for hierarchical components. We conclude the discussion with a look at automatic partitioning and distribuion of concurrent algorithms and a brief look at the future roadmap for the Fortress language.<img src="" height="1" width="1" alt=""/>
Nov 10, 2006
Episode 35: Roadmap
This episode mainly outlines the upcoming programming and interviews.<img src="" height="1" width="1" alt=""/>
Nov 08, 2006
Episode 34: Enterprise Architecture
In this episode Markus and our Guest Andy Longshaw talk about enterprise architecture. More specifically, we talk about some of the patterns in Andy Longshaw's and Paul Dyson's book Architecting Enterprise Solutions: Patterns for High-Capability Internet-based Systems. These includes things like replication, load balancing, monitoring and application management.<img src="" height="1" width="1" alt=""/>
Nov 02, 2006
Episode 33: Service Oriented Architecture, Pt.2b
This is the second snippet of the SOA 2 double-episode. Eberhard and Markus continue the discussion with the issue of service reuse and a couple of development process issues. We also look at the duality between infrastructure development and application development in the context of an SOA. We then discuss the great spaghetti misunderstanding :-). We conclude this episode with a look at how to integrate BPM into the conceptual SOA framework we've built up to now, and we'll also briefly skim over a number of technologies related to SOA. Note that this episode, as well as the last one, is based on a set of slides; these can be downloaded from here. This episode covers slides 39 through 74.<img src="" height="1" width="1" alt=""/>
Oct 23, 2006
Episode 32: Service Oriented Architecture, Pt.2a
In this, as well as in the next episode Eberhard and Markus continue their discussion about SOA (the episode got too long, so we had to split it into two ... SOA 2a and SOA 2b). In this episode, we talk about the various perspectives on SOA (CBD, EAI, BPM), about fundamental requirements towards an SOA, and we discuss the role of models in defining sustainable architectures. We also discuss how a programming model based on the described approach typically looks like. We then discuss a number of issues any large-scale SOA faces (and for which the SOA paradigm does not really provide an out-of-the-box solution: In this episode we discuss data type ownership and (weak) typing of data types.<img src="" height="1" width="1" alt=""/>
Oct 13, 2006
Episode 31: Agile Documentation
In this episode, our guest Andreas Rueping and Markus talk about documenting software. While this is a topic that many people don't like or consider fun, it is nonetheless very important. Based on his book, Agile Documentation, we talk about various aspects documenting software such as what to document, when to document, which media to use as well as specifically a number of layouting tips for nice documents.<img src="" height="1" width="1" alt=""/>
Oct 03, 2006
Episode 30: Architecture Pt.3
In this third Episode on software architecture, Michael and Markus talk about the basic tools that an architect uses when architecting systems. These tools include things like separation, abstraction, compression and sharing. We also relate these tools to the quality attributes we introduced in previous archtecture episodes.<img src="" height="1" width="1" alt=""/>
Sep 22, 2006
Episode 29: Concurrency Pt.3
The third part of our concurrency series by Michael and Alexander discusses how to build highly scalable servers. The discussion focusses especially on event-driven servers. As possible solution patterns a reactor-based design is suggested along-side several patterns for multi-threading issues: Reader/Writers Locks, Thread Pools, and Leader/Followers.<img src="" height="1" width="1" alt=""/>
Sep 12, 2006
Episode 28: Type Systems
In recent episodes we have discusses statically and dynamically typed languages and domain specific languages - topics that are much talked about in the community at the moment. In this episode we look at the foundation of programming languages : types. We explain what a type actually is, how type systems work and what polymorphism works.<img src="" height="1" width="1" alt=""/>
Sep 02, 2006
Episode 27: Service Oriented Architecture Pt.1
SOA (Service Oriented Architecture) appears to be just another hype - after all we have been building distributed systems for quite a while now. But the real value of SOA is non-technical. In this episode Eberhard and Markus discuss the advantages and disadvantages, what SOA actually is and how it compares to other approaches that have been tried out before.<img src="" height="1" width="1" alt=""/>
Aug 23, 2006
Episode 26: Interview Jutta Eckstein
In this Episode, Arno, Bernd and Markus interview Jutta Eckstein. Jutta is a pioneer and expert on using Agile software development, specifically in larger teams. In the interview we talk about the agile manifesto, the role of personal relationships and trust in software projects, differences between agility in the small and in the large, as well as offshoring.<img src="" height="1" width="1" alt=""/>
Aug 13, 2006
Episode 25: Architecture Pt. 2
In this Episode, Michael and Markus continue the discussion about the fundamentals of software architecture (we're doing it without Alex, because it is really hard to find a suitable time for all of us on the phone :-)). We talk about the various quality attributes (such as performance, scalability, maintainability and many more) and how they relate to each other.<img src="" height="1" width="1" alt=""/>
Aug 03, 2006
Episode 24: Development Processes Pt.1
In this episode Arno and Alex talk about the basics of software development processes. They discuss why and when software development processes are needed and also why some developers don't like them. They discuss the theories behind different processes and talk about defined vs empiric processes in general. This episode is the first in a row that will later on describe specific processes like eXtreme programming or the unified process.<img src="" height="1" width="1" alt=""/>
Jul 24, 2006
Episode 23: Architecture Pt. 1
This is the first of a series of Episodes on Software Architecture. Alex, Michael and Markus talk about rather fundamental topics in this episode, we'll go into much more detail in subsequent episodes in that series. Topics in this episode include: <ul> <li>What is architecture, how is it different from design</li> <li>what different kinds of architecture are there in addition to software architecture</li> <li>the role of the architect, do we have one or more?</li> <li>architecture in agile software development</li> <li>tasks of the architect</li> <li>architect vs. the technical project lead</li> <li>architecture and project politics</li> <li>architecture requirements, estimating, team assembling</li> </ul> There aren't too many good references for this general architecture discussion. You might want to take a look at <a href="">Software Architecture in Practice</a> by Len Bass, or, if you speak German, at the book <a href="">Software-Architektur</a> by Vogel, Arnold, Chugtai, Ihler, Mehlig, Neumann, Voelter and Zdun.<img src="" height="1" width="1" alt=""/>
Jul 14, 2006
Episode 22: Feedback
This is an episode with some more of your feedback. Specifically, the episode also contains a 5 minute section from <a href="">Geert Bevin</a> where he explains how Continuations are used an implemented in the <a href="">Rife Framework</a>. This is in response to a discussion about continuations and Rife in <a href="">Episode 15, Future of Enterprise Java</a>. We also have some feedback from <a href="">Bill Pugh</a> about flaws in our description about the problems of double-checked locking in Java.<img src="" height="1" width="1" alt=""/>
Jul 09, 2006
Episode 21: Error Handling Pt. 2
In this Episode, Arno and Michael take a closer look at Exceptions and Error conditions, how to categorize them and how to deal with them. We look at the different levels of guarantee that a piece of code can provide with regard to exceptional condition and finish with a discussion of a number of best practices and their respective trade-offs.<img src="" height="1" width="1" alt=""/>
Jul 04, 2006
Episode 20: Interview Michael Stal
In this Episode, we talk to Michael Stal, a Senior Principal Engineer at Siemens Corporate Technology, POSA 1 and 2 Co-Author and Editor of the german JavaSpetrum magazine. Since Michael's core focus is middlware, much of our discussion centered around that topic. Webservices and SOA, of course, have also been covered. Other topics include Java vs. .NET as well as Patterns.<img src="" height="1" width="1" alt=""/>
Jun 24, 2006
Episode 19: Concurrency Pt. 2
In this second part of our concurrency series Michael and Alexander talk about basic patterns for concurrent programming, such as Active and Monitor Object, Scoped Locking and Futures. Further, they discuss some architectural considerations regarding the number of threads and resource usage in general. For more information, see the references for <a href="">part one</a> as well as the following links<img src="" height="1" width="1" alt=""/>
Jun 14, 2006
Episode 18: Resource Management
In this episode Michael and our guest Prashant Jain talk about patterns for resource management. Efficient management of resources is critical in the execution of any kind of software. Ranging from embedded software in a mobile device to software in a large enterprise server, it is important that the resources, such as memory, threads, file handles, or network connections, are managed efficiently to allow the systems to function properly and effectively. Michael and Prashant discuss various patterns, such as Lazy Acquisition, Caching, Leasing and Evictor and explain when, why, and how to apply them for effective resource management.<img src="" height="1" width="1" alt=""/>
Jun 04, 2006
Episode 17: Feedback and Roadmap
This is a short episode that outlines the upcoming episodes and interviews, as well as reports on some listener feedback.<img src="" height="1" width="1" alt=""/>
May 29, 2006
Episode 16: MDSD Pt. 3, Hands-On
This episode provides a hands-on guided tour through a simple model-driven software project. It is based on an actual code sample (see link below) and takes a look at the typical steps of real-life code generation: prototypical implementation, defining the metamodel, reading a model into a metamodel instance, writing templates and validating the model. The example for the episode uses openArchitectureWare as a generator environment, but the overall approach is tool independent. This episode is the first in a new category "code/technology" that discusses technical concepts based on actual code. Please give feedback whether you find this format useful or not.<img src="" height="1" width="1" alt=""/>
May 25, 2006
Episode 15: The Future of Enterprise Java
A very important area for Java are Enterprise Systems. With the advent of new technologies like Ruby on Rails, Java EE 5 or EJB 3 the landscape for Enterprise Systems appears to be changing a lot at the moment. In this episode Markus talks with Eberhard about what Enterprise Java actually is, why and where it is used. Based on that they discuss what the future might look like and how to make Enterprise Java shine in the future.<img src="" height="1" width="1" alt=""/>
May 15, 2006
Episode 14: Interview Ted Neward
In this Episode we talk to Ted Neward. Since Ted is active in the .NET and Java universes, we started out by discussing some of the differences between the two platforms. The main discussion, however, focussed on new features in the C# 3.0 language. These include LINQ (language-integrated query). A very interesting discussion about extension methods, lamda expression, typing (dynamic, duck, compiler) and other language "tricks" follows. We also visited the topic of language development on the .NET and Java platforms in general, also looking at topics such as concurrency and the Scala language.<img src="" height="1" width="1" alt=""/>
May 05, 2006
Episode 13: Ruby in Practice
Ruby has been getting more and more attention by the developer community over the last couple of years. Nevertheless Ruby as language and as a plattform is not too widespread. Most developers don't know people who have actually done commercial Ruby projects. Therefore it is sometimes hard to judge if Ruby is just a hype topic or if Ruby can be used for serious projects today. In this episode Alexander speaks with Thomas Quas about a commercial Ruby project Thomas finished a while ago. Thomas shares his insights and practical experiences with Ruby doing a project under strong time pressure. As Thomas has many years experience doing Java projects we also do some high level comparisons between both platforms.<img src="" height="1" width="1" alt=""/>
Apr 26, 2006
Episode 12: Concurrency Pt. 1
This is the first part of a series of Concurrency episodes. In this part Alex and Michael motivate and introduce the topic. We explain fundamental terms, such as thread, process, or mutex and dicuss typical challenges, such as deadlocks and race conditions.<img src="" height="1" width="1" alt=""/>
Apr 18, 2006
Episode 11: Interview Gregor Kiczales
In this Episode we have the pleasure of talking with Gregor Kiczales. Gregor is one of the fathers of aspect-oriented programming (AOP). Today he is a professor of computer science at the University of British Columbia. Back in his days at Xerox Parc, he and a number of other people worked on the early forms of AOP as well as on some of its forerunners, such as meta object protocols. In this interview, we talk about a number of interesting topics, such as the history of AOP, the relationship of AO to interceptors, the industry acceptance of AOP, early aspects (i.e. using AO in development phased before implementation) as well as adoption strategies for AOP.<img src="" height="1" width="1" alt=""/>
Apr 08, 2006
Episode 10: Remoting Pt. 2
This is the second part of the remoting infrastructures discussion started in Episode 9. We take a look at how remoting infrastructures such as CORBA, .NET Remoting or Web Services work internally. This includes the low level details of the transport layer, marshalling, client proxies as well as interceptors and asynchronous communication. At the end, Michael will explain how all this relates to CORBA and Markus will map the concepts to .NET remoting. We don't have additional links in these show notes since all the relevant links had been posted for Episode 9 already.<img src="" height="1" width="1" alt=""/>
Mar 29, 2006
Episode 9: Remoting Pt.1 and Listener Feedback
This Episode as well as the next one take a look at remoting infrastructures such as CORBA, .NET Remoting or Webservices. In this first part we will take a look at why remote communication is necessary in the first place, what remoting middleware can do for you as well as which other middleware technologies exist in addition to OO-RPC systems, such as messaging middleware. Finally, we conclude with a brief overview of what the broker pattern can do for us in the context of remoting middleware.<img src="" height="1" width="1" alt=""/>
Mar 19, 2006
Episode 8: Interview Eric Evans
Eric Evans is the author of the well known Domain-Driven Design book. In his day job he works as a consultant and coach for his own company, Domain Language. In this interview, Eric talks about the essential building blocks of domain-driven design as well as about a set of best practices on how to address complex projects. In a third part, he elaborates on the relationship of domain-driven design and MDSD/MDA.<img src="" height="1" width="1" alt=""/>
Mar 08, 2006
Episode 7: Error Handling
This week, Arno and Markus take a look at error handling at the architectural level. They discuss the different kinds of errors, the groups of people who need to know about them and proven high-level approaches. Later episodes will investigate more technical aspects of error handling, such as idioms for using exceptions or a discussion of checked vs. unchecked exceptions.<img src="" height="1" width="1" alt=""/>
Feb 27, 2006
Episode 6: Model-Driven Software Development Pt. 2
After discussing some of the more technical aspects of MDSD in the last episode, we take a look at other important topics in this one. This includes some tips on how to introduce MDSD into projects and how the development process has to be adapted for this to work, as well as a look at the return on investment for MDSD. The relationship of MDSD and Agile software development is also discussed. Finally, we take a look at offshoring in the context of MDSD.<img src="" height="1" width="1" alt=""/>
Feb 18, 2006
Episode 5: Model-Driven Software Development Pt. 1
In this Episode, Eberhard and Markus provide an introduction to Model-Driven Software Development. Since the discussion turned out to be too long, we separated things into two episodes, thus Episode 6 will be the second part of this discussion. In this first part we disucsss core concepts of MDSD, the relationship to MDA, and hint at a couple of tools.<img src="" height="1" width="1" alt=""/>
Feb 09, 2006
Episode 4: Scripting Languages
In this Episode, Alexander and Markus talk about scripting languages. Topics include the definition of what a scripting language is, typical usage scenarios, performance issues, programming styles and IDE support. In later Episodes we will talk about more specific topics, such as dynamic typing, reflection, functional programming as well as specific languages such as Ruby.<img src="" height="1" width="1" alt=""/>
Feb 01, 2006
Episode 3: Interview Doug Schmidt
In this episode we talk with Doug Schmidt. Doug is a professor of computer science at Vanderbilt University and a well-respected authority in the fields of middleware, patterns and model-driven development. In this interview we talk about these topics in the context of distributed, realtime embedded (DRE) systems.<img src="" height="1" width="1" alt=""/>
Jan 25, 2006
Episode 2: Dependencies
Eberhard and Markus discuss the important topic of associations and dependencies in this show. While OO languages provide direct support for subtyping, most don't provide a first-class construct for other relationships between objects. The discussion elaborates on the problem and looks at various remedies, most importantly, dependency injection.<img src="" height="1" width="1" alt=""/>
Jan 24, 2006
Episode 1: Patterns
In this episode Michael and Markus talk about patterns. Starting with some of their "most used" patterns, they go into some detail about the history of patterns. They then discuss the various pattern forms as well as some misconceptions about patterns. Other topics include the domains that are covered by patterns as well as pattern languages.<img src="" height="1" width="1" alt=""/>
Jan 22, 2006
Episode 0: About
This is the first episode (actually, episode zero) of software engineering radio. The episode does not contain real content, rather, Markus explains what the podcast is all about.<img src="" height="1" width="1" alt=""/>
Jan 21, 2006