Comment by zmgsabst

…no?

There’s still a defined cost to swapping your DB code over to a different backend. At the point where it becomes uneconomical, you’re also at a scale you can afford rewriting a module.

That’s why we have things like “hexagonal architecture”, which focus on isolating the storage protocol from the code. There’s an art to designing such that your prototype can scale with only minor rework — but that’s why we have senior engineers.