CQRS

Command–query separation (CQS) is a principle of imperative computer programming. It was devised by Bertrand Meyer as part of his pioneering work on the Eiffel programming language.

It states that every method should either be a command that performs an action, or a query that returns data to the caller, but not both. In other words, Asking a question should not change the answer.[1] More formally, methods should return a value only if they are referentially transparent and hence possess no side effects.

How to handle file uploads

Golang

  • go.cqrs - A Golang reference implementation of the CQRS pattern.

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