Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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If you're the only user and just want it working without much fuss, use a single db instance and forget about it. Less to maintain leads to better maintenance, if performance isn't more important.
It's fairly straightforward to migrate a db to a new postgres instance, so you're not shooting yourself in a future foot if you change your mind.
Use PGTune to get as much as you can out of it and adjust if circumstances change.
That's what I needed to hear. I'll just try it out and see what works best for me. Stupid me didn't even think of that.
I'm not really bothered about services going down all at once. The server is mostly just used by me and my family. We're not losing money if it's out for an hour or so.
In a hobby it's easy to get carried away into doing things according to "best practices" when it's not really the point.
I've done a lot of redundant boilerplate stuff in my homelab, and I justify it by "learnding". It's mostly perfectionism I don't have time and energy for anymore.
Remember that databases were designed to host multiple databases for multiple users... As long as you're working with maintained software (and you are) it should be pretty trivial to run on the latest version of Postgres and have everything just work using one instance if you're resource constrained.
Definitely a good point about being able to migrate as well. Postgres has excellent tools for this sort of thing.