Software Engineering Radio - the podcast for professional software developers
Episode 218: Udi Dahan on CQRS (Command Query Responsibility Segregation)
Jan 30, 2015
Udi Dahan discusses the CQRS architectural pattern, its relation to the command pattern, event ordering, event sourcing, and its popularity in different programming communities. He also provides resources for learning more about CQRS.
01:02:28
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Quick takeaways
- CQRS is a valuable architectural pattern for domains with complex business logic, allowing for separate handling of queries and commands and improving scalability and performance.
- CQRS can be applied to both relational and NoSQL databases, with the choice of data persistence aligning with the specific requirements and complexities of the domain.
Deep dives
CQRS and its Background
CQRS (Command Query Responsibility Segregation) was coined by Udi Dehaan and Greg Young as a solution to the problem of using the same set of objects for commands and queries. They found that using different sets of objects worked better, leading to the development of CQRS. CQRS is primarily suited for domains with complex business logic and tasks, rather than simple CRUD operations.
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