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About Markus Eisele

Markus Eisele
Markus is a Developer Advocate at Red Hat and focuses on JBoss Middleware. He is working with Java EE servers from different vendors since more than 14 years and talks about his favorite topics around Java EE on conferences all over the world. He has been a principle consultant and worked with different customers on all kinds of Java EE related applications and solutions. Beside that he has always been a prolific blogger, writer and tech editor for different Java EE related books. He is an active member of the German DOAG e.V. and it's representative on the iJUG e.V. As a Java Champion and former ACE Director he is well known in the community. Follow him on Twitter @myfear.

CQRS with Java and Lagom

I’ve had the pleasure to talk at the Chicago Java User Group and talk about how Lagom implements CQRS, the Command Query Responsibility Segregation pattern. Thankfully, there is a recording and I also published the slides on slideshare.
 
 
 
 
 
 
 
 
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Abstract:

As soon as an application becomes even moderately complex, CQRS and an Event Sourced architecture start making a lot of sense. The talk is focused on: – the challenges and tactics of separating the write model from the query model in a complex domain – how commands naturally lead to events and to an event based system, and – how events get projected into useful, eventually consistent views. Event Sourcing is one of those things that you really need to push through at the beginning (much like TDD) and that – once understood and internalized, will change the way you architect a system. This talk introduces you to the basic concepts and problem spaces to solve.

Thanks again for hosting me, CJUG! It was a real pleasure!

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