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Posts Tagged ‘CQRS’


CQRS: Designing the Event Store
Posted by Erik Rozendaal mid-afternoon: December 5th, 2009

One of the things I like about CQRS is that many of the infrastructure components become simpler, at least compared to the classical ORM approach. However, some of these components have not seen widespread use in existing enterprise applications and will be new to most people. One such component is the Event Store that is used for persistence of the (transactional) domain in CQRS.
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Tags: CQRS, Domain Driven Design
Filed under Java | 3 Comments »


Domain-Driven Design and Command-Query Separation example application
Posted by Erik Rozendaal in the early morning: December 3rd, 2009

Ever since attending Greg Young’s Unshackle Your Domain talk at QCon ’08 in San Francisco and a later two-day training course given by Greg Young I’ve wanted to build a sample application that made use of the principles of Command-Query Responsibility Separation (CQRS).

However, other interesting things intervened and I never got around to doing this.

But every few months we have a one day internal training course at Xebia Software Development and after Sjors Grijpink and I proposed to give a training on DDD and CQRS we got some time to actually prepare and implement a CQRS example application.
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Tags: CQRS, Domain Driven Design
Filed under Architecture, Java | 16 Comments »


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