Presentation: Jim Webber on "Guerilla SOA"
Don't miss the full presentation (53"), which is not only very interesting from a technical standpoint, but also quite hilarious. (Jim Webber will again be presenting at QCon London 2008, which takes place in March.)
Adding features to a service without changing it
I have a question though. I'm trying to think through one of the advantages I think you can get with an ESB architecture. If all messages go via an ESB then features such as security, logging, routing, transformations can be:
1. Managed centrally .. so no need for individual services to implement these features.
2. New features, and updates to old features, can be managed seperately from the services themselves.
This strikes me as positive things becuase it means that different aspects of services can be managed/deployed/changed seperately.
Maybe the features I'm talking about are just technical services? You very, very briefly touched upon technical services in your presentation.
Any thoughts? Or should I just buy the book?
Though I'm a bit worried that he goes over the technical issues with SOAP and WS-* in general, and federated transactions in particular, a bit too quick.
In my experience, most of WS-* simply doesn't work. That's not so bad, as most of it doesn't have any value to me, too, but still ;-).
Distributed transactions in particular have been dismissed by many experts that have worked on the topic for ages. There are highly plausible arguments that they might never work at all.
There is still a lot of work to be done, and at I'm very sceptical if all the WS-* stuff is actually helping to get stuff done or just an impediment.