Spent some time on my #ActivityPub project today getting #PSQL set up. There's a lot of random setup that goes into PSQL and it isn't especially well documented (or rather, it is so well documented there is simply too much of it).
Whether I stick with it is a separate question. Comparing it to the other options and including the learning curve it is head and shoulders the best pick for me for right now, however, at least for a production-level database.
Still looking at #sqlite3 for testing