5
Working with the CQRS Pattern
We now know that microservices require a bit of foresight during the planning phase, and we need to ensure that we employ the best patterns and technology to support our decisions. In this chapter, we will be exploring another pattern that has gained much acclaim in helping us to write clean and maintainable code. This is the Command Query Responsibility Segregation or Separation (CQRS) pattern, which is an extension of the Command-Query Separation (CQS) pattern.
This pattern allows us to cleanly separate our query operations from our command operations. In essence, a query asks for data, and the command should modify data in one way or another by the end of the operation.
As programmers, we tend to employ Create, ...
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