Command Query Responsibility Segregation (CQRS)
Explore the Command Query Responsibility Segregation pattern and its practical application in software architecture. Understand how separating read and write data models within a rich domain improves data consistency and maintainability. Discover methods to avoid vendor lock-in by generating query objects through domain models rather than direct database queries, enhancing flexibility and reducing technical debt.
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The Command and Query Responsibility Segregation (CQRS) pattern separates the “write” data model and the “read” data model for a data store, as visualized above.
While I do not intend to explain the CQRS pattern from scratch, I want to give a couple of hints for implementing solutions while applying this pattern.
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Combine CQRS with rich domains for the best results. Earlier, I explained what a rich domain is (see the lesson), which is a preferred form of implementing domain layers of software systems. Now I want to recommend that you use both patterns when applying the CQRS pattern to the ...