Software Engineering Radio

Recording Venue: OOPSLA 2007
Guest(s): Olaf Zimmermann
Host(s): Markus
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.

Links:

• Olaf’s OOPSLA 07 Tutorial
• World Wide Web W3C Web Services activities
• OASIS
• WS-Interoperability (WS-I)
• Apache Web Services projects
• SOA Decision Modeling Project
• Further Links
• Olaf’s Team at IBM
• Book: Perspectives on Web Services

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Recording Venue: JAOO 2006
Guest(s): Steve Vinoski
Host(s): Markus
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.

Links:

• CeltixFire Service Framework
• QPid AMQP implementation
• IONA’s Artix ESB
• His Book, Advanced CORBA Programming with C++
• Steve’s Blog

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Recording Venue:
Guest(s): Michael Stal

Host(s): Markus
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.

Links:

• Pattern Oriented Software Architecture, Volume 2
• Article by Michael on SOA
• A Blog Entry by Michael on SOA
• Michael’s magazine, JavaSpektrum (german)
• Java vs. .NET: at O’Reilly
• Java vs. .NET: at Java World
• Michael’s Homepage
• Pattern Oriented Software Architecture, Volume 1
• Michael’s Pattern Laws

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Recording Venue:
Guest(s):
Host(s): Michael Markus
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.

Links:

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Recording Venue:
Guest(s):
Host(s): Michael Markus
Recording Venue:
Guest(s):
Host(s): Michael Markus
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.

Links:

• Web Services information at W3C
• .NET Remoting overview
• Enterprise Integration Patterns take a look at messaging middleware
• CORBA information
• POSA 2 contains a number of implementation patterns for concurrent systems
• The Broker Pattern Revisited, a paper describing the essence of the Broker Pattern
• POSA 1, the book which contains the broker pattern.
• Remoting Patterns, the book that contains the patterns based on which we explain remoting middleware
• Web Services standards at OASIS

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