We live in a world of dynamically changing technologies. New ways of architecturing our solutions, new frameworks and libraries seem to appear on almost a daily basis. But good software engineering is not about fancy frameworks and solutions aggressively promoted by their vendors. It is not about doing something because Netflix or Google did it. It is about taking well-thought-out decisions based on facts and knowledge. That’s why it is important to be familiar basic architectural concepts like CQRS. It is one of the tools we use in our software house every day. We mentioned CQRS in the article which is part of the series about Microservices on .NET Core, but it was presented from technical perspective and here we want to focus on basics concepts and their explanation with visualizations and examples.
What Is CQRS?
Command-Query Responsibility Segregation is a pattern that tells us to separate operations that mutate data from the ones that query it. It is derived from Command Query Separation (CQS) principle devised by Bertrand Mayer – author of Eiffel.
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