If you make code changes, that usually means you need to adjust your data structures, too. That means you need to manage multiple on disk versions, or maybe mig

If you make code changes, that usually means you need to adjust your data structures, too. That means you need to manage multiple on disk versions, or maybe migrate the old data to the new version. I mean, you can do all of this stuff another way. But PostgreSQL represents a lot of lessons learned over decades with all kinds of applications. Sure, there may be some level at which it's just easier to serialize the in-memory data. But that level is lower than most people realize and postgres is pretty darn easy to use given all the kinds of problems it helps you avoid. Even an MVP of a trivial web app is probably fastest to deliver with postgres, and less risky. And there are tons of things that are really convenient even for the tiniest app. For instance, being able to go in and browse your data to find out what's causing a minor bug.