There has been a recent push to get more of the WebSphere development team out in to the blogosphere in the run up to the release of V7 of the Application Server. The standard form seems to be to advertise new blogs on the WebSphere Community Blog. So far there is one covering WebSphere and Java Persistence, and likely to be of particular interest to readers of this blog, one on WebSphere and Messaging. Note that the latter doesn’t cover WebSphere MQ (see this blog if that’s your area of interest) but rather the default messaging provider in WebSphere Application Server. Expect to see lots of good material on some of the new features and make the most of the chance to interact with the development team. Whilst on the subject of new blogs, if DataPower is your bag then you can read all about a forthcoming book from some of my ex-ISSW colleagues here.
Archive for the ‘WebSphere’ Category
New WebSphere blogs
Wednesday, September 24th, 2008Messaging Engine Startup Problems
Thursday, September 11th, 2008Another heads up for some Service Integration Bus education. On 17 September there is a free webcast entitled Messaging Engine Startup Problems given by Level 2 service and followed by a Q&A session. You can see a list of all the upcoming webcasts or, to receive information about events such as this, along with information about publications and support issues, sign up at My Support.
Update: the replay for this webcast is now available.
Changing jobs
Saturday, September 6th, 2008No – I’m not about to leave IBM but, after nearly four years in IBM Software Services for WebSphere it’s time to hang up my travelling bag and, as in all good resignation speeches, spend some more time with my family. I’ve really enjoyed the chance to work closely with customers on some very interesting projects during that time and in many different countries (let’s see, from the top: Norway, Sweden, Finland, Denmark, Germany, UK, Switzerland, Italy, Spain and the US). I have also had the opportunity to work with some very talented and knowledgeable IBMers. I can’t really claim to have enjoyed the travelling – one business hotel looks much like another after a while – but for some reason customers insist of the consultant coming to them rather than vice-versa! The real killer though is not knowing where you’re going to be next week or perhaps even tomorrow.
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Graceful shutdown
Friday, September 5th, 2008Having done a little research on application server shutdown in order to answer a customer query I thought I would post my findings. WebSphere Application Server supports three shutdown modes: stop, stop immediate and terminate (in order of immediacy).
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My first US patent
Thursday, September 4th, 2008Last week I had my first US patent issued: #7218708. The patent describes the use of the J2EE Connector Architecture to integrate a Java Message Service provider with an application server. This is something that is actually very easy to do with JCA 1.5 given the restriction of one JMS session per connection introduced by J2EE 1.4. However this patent describes a mechanism to use JCA twice (once at the connection level and once at the session level) that doesn’t require this restriction. This was first used in WebSphere Application Server V5 and continues to be used for the WebSphere MQ and generic JMS provider support today.
Locks and leaks
Thursday, July 17th, 2008I was called upon yesterday to review some WebSphere product code I wrote about six years ago. It was a bit of a shock to see from the change history the number of fixes that had been made in the intervening time! Many of these related to deadlock situations, often when I was merely taking a lock whilst I iterated over a set in toString or some such seemingly innocuous method. It is very hard to get the lock ordering correct when you are just a component in the middle of the stack. The lesson there is, I suspect, to only trace when entries are added or removed from the set and perhaps just give the size at other times.
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Configuring SIB J2SE client with SSL
Wednesday, July 16th, 2008If configuring the service integration bus J2SE client for SSL is a topic of interest to you then make sure you register for next week’s presentation from Rich Montjoy in level 2 service.
Dynamic JMS endpoints
Tuesday, July 15th, 2008In an earlier post I promised an example of where service integration bus mediations still have a role to play in a WebSphere ESB environment. WebSphere ESB currently only supports dynamic endpoints on an import or callout (those that can be changed at runtime by a mediation flow) for SCA and web service bindings. In this post I’ll show how a service integration bus mediation can be used to add dynamic behaviour to a JMS binding.
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