So were is the feature for DRY business logic like centralized validation? There was a post not too long ago about Bitcoin like currency that only validated on

So were is the feature for DRY business logic like centralized validation? There was a post not too long ago about Bitcoin like currency that only validated on the front end. Where is the language or framework that solves this? To this day Java doesn’t. I don’t think that even Node really does. I guess WebForms if they passed to POCOs that errored in a certain way.