Yep, this is where you can end up with tons of mapping boilerplate and potential bugs. I tend to reach for code-generation tools, schema based protocols like Pr

Yep, this is where you can end up with tons of mapping boilerplate and potential bugs. I tend to reach for code-generation tools, schema based protocols like Protocol Buffers, and prefer code simplicity over performance concerns. The hope is that the price you pay for building around strict consistent data models across all your systems will pay off in maintainability and fewer bugs.