Grokking Microservices Design Patterns
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Issues, Special Considerations, and Performance Implications

CQRS, like all patterns, has its challenges and caveats. It does not resolve all the issues and is not suitable for all cases.

Understanding the Complexity

CQRS adds real complexity to a system. You maintain two models instead of one, the command model and the query model, and both have to be kept in step. This complexity could be a roadblock for developers unfamiliar with the pattern, and the learning curve could be steep.

Managing Data Consistency

One of the significant challenges with the CQRS pattern is maintaining consistency between the command model and the query model

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Shaikh Saleem

Shaikh Saleem

· 3 years ago

Hi, how to handle concurrency issues at the command side? For example, in a e-commerce store scenario, if there is only one item, and if two user are trying to buy the item at the same time, then how does command side handle this?

Thanks.