Introducing CQRS Into Legacy Systems

Getter methods retrieve state, while setter methods change state. We all know that. HTTP GET requests retrieve state, while HTTP POST requests change state. We all know that. Then why have we built so many applications with a single object model, blatantly ignoring this separation? Turns out that creating a separate model for reading and writing makes a lot of sense. But how can we introduce this concept into legacy applications? This presentation shows how to do it, and what is in it for you.

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Stefan Priebsch
Stefan Priebsch
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Event Sourcing For Real Introducing CQRS Into Legacy Systems