CQRS and Clean Architecture Integration.

CQRS separates Use Cases into 'Commands' (writes) and 'Queries' (reads), often bypassing complex Entities for simple reads.

In a strict CA, every read goes through a Use Case and an Entity. In CQRS, Queries can bypass the Entity layer and go straight from the Database Adapter to a DTO for performance. Commands, however, must still go through the Entities to ensure business rules are enforced.