Have you worked with DDD and CQRS? Tell us about it.

Yes, I have experience working with DDD (Domain-Driven Design) and CQRS (Command Query Responsibility Segregation).

In projects, I used DDD to clearly separate business logic, identify aggregates and entities, which helped to better model the domain and facilitate code maintenance.

I applied CQRS to separate read and write operations, which allowed optimizing performance and scalability. For example, commands handled state changes, while queries retrieved data, often using different data models.

In Go, I implemented this through separate services or layers, where commands and queries were processed by different handlers, improving code readability and testability.