Tag: java

Episode 177: IBM i (OS/400) Operating System with Steve Will

Filed in Episodes by on July 6, 2011 7 Comments
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 […]

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Episode 82: Organization of Large Code Bases with Juergen Hoeller

Filed in Episodes by on January 2, 2008 7 Comments
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.

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Episode 80: OSGi with Peter Kriens and BJ Hargrave

Filed in Episodes by on December 13, 2007 0 Comments
Episode 80: OSGi with Peter Kriens and BJ Hargrave

This episode is about OSGi, the dynamic module system for Java. Our guests are Peter Kriens (OSGI’s Technical Director) and BJ Hargrave (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?

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Episode 44: Interview Brian Goetz and David Holmes

Filed in Episodes by on January 27, 2007 1 Comment
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.

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Episode 20: Interview Michael Stal

Filed in Episodes by on June 25, 2006 1 Comment
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.

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