Thursday, March 05, 2015

About CQS, CQRS and Event Sourcing

Seems to be a lot of confusion going on about these terms. The below extract form Greg Young explains it all:
Many people have been getting confused over what CQRS is. They look at CQRS as being an architecture; it is not. CQRS is a very simple pattern that enables many opportunities for architecture that may otherwise not exist. CQRS is not eventual consistency, it is not eventing, it is not messaging, it is not having separated models for reading and writing, nor is it using event sourcing. I want to take a few paragraphs to describe first exactly what CQRS is and then how it relates to other patterns.


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