The Inner Workings of the CQRS Pattern

The Path of a Command

A command signifies an intention to change the state of our system. Let us follow one command through the system to see how CQRS processes it.

Imagine a user wants to update their address in an e-commerce application. The command would be something like 'Update User Address'. This command would trigger a chain of events within the system.

Validation

Before anything else, the command is validated. This validation can involve checks for data format, permissions, and other business rules