Data Annotations vs FluentValidation: Which should you use?

[@VC-dm7jp]

This is a really great explanation

[@fishzebra]

Should a request dto make a Db call to see if User exists? I think request dtos should do more basic validation and then User exists is handled by the domain service, of course it works either way, but I think request dtos and domain logic easily gets tangled

[@phw1009]

I really like the fact that FluentValidation is truly 'Fluent'.

[@guswind4636]

I do like Fluid Validation as it consolidates all validations for your data models but at the same time nothing prevents another developer from adding a Data Annotations validation and that does not sounds clean anymore