In the opinion of a last semester CS student who has never written an application from scratch that needed more than a SQLite DB (so take me with a half grain of salt), it seems like premature optimization, while always talked about, is very common. I see people talking about using Kubernetes for internal applications and I just can't figure out why. If it's a hobby project and you want to learn Kubernetes, that's a different situation, but in the case of making a real application that people will use, it seems like a lot of us can get away with a single DB, a few workers of our app, and maybe a cache.
I'm speaking out of little experience though. I just think that a lot of us can get away with traditional vertical scaling and not think too much about it.
I'm speaking out of little experience though. I just think that a lot of us can get away with traditional vertical scaling and not think too much about it.