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.
Direct download: seradio-episode121-ORMappers.mp3
Category:Episodes -- posted at: 6:20pm CEST

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.
Direct download: seradio-episode120-OCL.mp3
Category:Episodes -- posted at: 9:39pm CEST

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.
  • Omega Tau, Markus' new podcast mentioned in the beginning of the show
  • Direct download: seradio-episode119-DSLsInPracticeWithJPTolvanen.mp3
    Category:Episodes -- posted at: 6:35pm CEST

    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.
    Direct download: seradio-episode118-eelcoVisserOnParsers.mp3
    Category:Episodes -- posted at: 7:27am CEST

    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.
    Direct download: seradio-episode117-branSelicOnUML.mp3
    Category:Episodes -- posted at: 6:48am CEST

    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.
    Direct download: seradio-episode116-jimHendlerOnTheSemanticWeb.mp3
    Category:Episodes -- posted at: 8:47am CEST

    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.
    Direct download: seradio-episode115-architectureAnalysis.mp3
    Category:Episodes -- posted at: 8:41am CEST

    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.
    Direct download: seradio-episode114-christofEbertOnRequirementsEngineering.mp3
    Category:Episodes -- posted at: 9:28am CEST

    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.
    Direct download: seradio-episode113-jeffMcAfferOnBuildingPlatforms.mp3
    Category:Episodes -- posted at: 7:53am CEST

    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.
    Direct download: seradio-episode112-rolesInSoftwareEngineeringPartTwo.mp3
    Category:Episodes -- posted at: 8:05am CEST

    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.
    Direct download: seradio-episode111-aboutus2008.mp3
    Category:Episodes -- posted at: 8:16am CEST

    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.
    Direct download: seradio-episode110-rolesInSoftwareEngineeringPartOne.mp3
    Category:Episodes -- posted at: 9:51pm CEST

    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.
    Direct download: seradio-episode109-randyShoupOnEbayArchitecturePrinciples.mp3
    Category:Episodes -- posted at: 8:57am CEST

    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.
    Direct download: seradio-episode108-simonPeytonJonesOnFunctionalProgramming.mp3
    Category:Episodes -- posted at: 9:47am CEST

    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 :-)
    Direct download: seradio-episode107-andrewWatsonOnOMG.mp3
    Category:Episodes -- posted at: 7:46am CEST

    This episode is a systematic introduction to Aspect Oriented Programming (in contrast to the interview with Gregor Kiczales). 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.
    Direct download: seradio-episode106-introductionToAOP.mp3
    Category:Episodes -- posted at: 7:07pm CEST

    In this episode we're talking to Linda Rising 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?
    Direct download: seradio-episode105-lindaRisingOnRetrospectives.mp3
    Category:Episodes -- posted at: 10:57am CEST

    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.
    Direct download: seradio-episode104-klausMarquartOnPluginArchitectures.mp3
    Category:Episodes -- posted at: 9:30am CEST

    In this episode we're talking to Jens Coldewey 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.
    Direct download: seradio-episode103-jensColdeweyOn10YearsOfAgileExperiences.mp3
    Category:Episodes -- posted at: 9:04am CEST

    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.
    Direct download: seradio-episode102-relationalDatabases.mp3
    Category:Episodes -- posted at: 11:15am CEST

    In this episode we're talking to Andreas Zeller. 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.
    Direct download: seradio-episode101-andreasZellerOnDebugging.mp3
    Category:Episodes -- posted at: 11:18am CEST

    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.
    Direct download: seradio-episode100-softwareInSpace.mp3
    Category:Episodes -- posted at: 2:24pm CEST

    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.
    Direct download: seradio-episode99-transactions.mp3
    Category:Episodes -- posted at: 2:09pm CEST

    In this episode we discuss REST (Representational State Transfer) with Stefan Tilkov. 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.
    Direct download: seradio-episode98-stefanTilkovOnRest-fixed.mp3
    Category:Episodes -- posted at: 8:55am CEST

    In this episode we have the pleasure of talking to Anders Hejlsberg, 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.
    Direct download: seradio-episode97-interviewAndersHejlsberg-fixed.mp3
    Category:Episodes -- posted at: 9:41pm CEST

    This episode is the long-awaited (and much requested) interview with Krzysztof Czarnecki, the author, together with Ulrich Eisenecker, of the book Generative Programming. 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.
    Direct download: seradio-episode96-interviewKrzysztofCzarnecki.mp3
    Category:Episodes -- posted at: 9:14pm CEST

    In this episode we talk to Matthew Wall (Guardian News and Media) and Erik Doernenburg (Thoughtworks) about their work on the new guardian.co.uk website. We discuss the challenge of scalability and interactivity, their use of Domain Driven Design, some of the technical building blocks as well as the approaches they use for performance measuring and scalability tuning.
    Direct download: seradio-episode95-theNewGuardianWithWallAndDoernenburg.mp3
    Category:Episodes -- posted at: 3:49pm CEST

    In this episode we're talking to Dirk Riehle 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 protexIP not IP Central, there are presently 70 licenses approved by the Open Source Initiative, and EnterpriseDB has so far acquired $37M in venture capital
    Direct download: seradio-episode94-osBusinessModelsWithDirkRiehle.mp3
    Category:Episodes -- posted at: 10:56pm CEST

    In this episode, Markus talks to Rebecca Wirfs-Brock on what she has learned from architecture reviews. This is a very complement to the earlier episode on architecture evaluation.
    Direct download: seradio-episode93-architectureReviewsWithRebeccaWirfsBrock.mp3
    Category:Episodes -- posted at: 2:38pm CEST

    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.
    Direct download: seradio-episode92-introductionToGameDevelopment.mp3
    Category:Episodes -- posted at: 3:19pm CEST

    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.
    Direct download: seradio-episode91-kevlinHenneyOnCpp.mp3
    Category:Episodes -- posted at: 7:15am CEST

    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.
    Direct download: seradio-episode90-ProductLineEngineering_Pt3_CharlesKrueger.mp3
    Category:Episodes -- posted at: 12:31pm CEST

    In this Episode we're talking about Erlang with its creator Joe Armstrong. 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.
    Direct download: seradio-episode89-JoeArmstrongOnErlang.mp3
    Category:Episodes -- posted at: 11:53am CEST

    In this episode we talk to Galen Hunt about the Singularity research OS. Galen is the head of Microsoft's OS Research Group 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.
    Direct download: seradio-episode88-singularityWithGalenHunt.mp3
    Category:Episodes -- posted at: 9:58pm CEST

    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.
    Direct download: seradio-episode87-softwareComponents.mp3
    Category:Episodes -- posted at: 9:06pm CEST

    This episode is an interview with Dave Thomas (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.
    Direct download: seradio-episode86-daveThomas.mp3
    Category:Episodes -- posted at: 1:04pm CEST

    In this Episode we're talking about Web Services with IBM's Olaf Zimmermann. 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.
    Direct download: seradio-episode85-olafZimmermannOnWebServices.mp3
    Category:Episodes -- posted at: 9:45pm CEST

    In this Episode we're talking with Dick Gabriel on Lisp. 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 Prometheus Music.)
    Direct download: seradio-episode84-dickGabrielOnLisp.mp3
    Category:Episodes -- posted at: 6:50pm CEST

    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.
    Direct download: seradio-episode83-jeffDeLucaOnFeatureDrivenDevelopment.mp3
    Category:Episodes -- posted at: 9:58pm CEST

    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.
    Direct download: seradio-episode82-largeCodebasesWithJuergenHoeller.mp3
    Category:Episodes -- posted at: 6:02pm CEST

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