I’m using InfluxDB persistence on my Openhab (Raspberry 3b+).
I also have Postgres up and running.
What is it for ?
May I stop/uninstall Postgres to save resources?
Does Openhab need it ?
Thanks!
Well, Postgres is a SQL database. You can store Item states and recall them later. even more important: You can evaluate the persisted data with other tools.
Postgres is capable to manage all type of items.
InfluxDB, on the other hand, is specialized to time series, it’s very fast in writing and reading data, so it’s very good for drawing graphs like in Grafana.
If you don’t use Postgres, you don’t need it, and openHAB doesn’t, too.