My personal opinion on the Clean Code Architecture in the context of the Domain Driven Design (DDD), yet i adopted some terms from the Onion Architecture such as domain in order to avoid any misleading interpretations with the Domain in Domain Driven Design.

I'm using in-memory repository for the current implementation, however... will be adding another sample for other repository implementations such as database and web services. The client is also provided as a CLI application at this moment merely to show how this kinda architecture works. Absolutely, will be updating with other infrastructures and adapters such as REST APIs, gRPC services, etc.