Value Objects in CQRS - where to use

Question

Let\'s say we have CQRS-inspired architecture, with components such as Commands, Domain Model, Domain Events, Read Model DTOs.
Of course, we can use Value Objects in our Dom

Answer 1

According to Clean Code your DTOs are data structures (just to add another term), while value objects are objects. The difference that objects can have behavior. Mixing data structures with objects is generally a very bad idea, because it will be hard to maintain the hybrid you get.

I don't feel right to put value objects to DTOs from an architecture perspective as well. The value objects are inside of the domain model while the DTOs you mentioned are defining the interface of the model. We usually build an interface to decouple the outside world from the inside of something. So in the current case we added DTOs to decouple the outside world from the value objects (and other model related stuff). After that adding value objects to the interface is crazy.

So you haven't met this solution yet because it is an anti-pattern.