And even if you have to use some other tool (Redis, Cassandra, MySQL!), you can access it from Postgres – https://wiki.postgresql.org/wiki/Foreign_data_wrappers

And even if you have to use some other tool (Redis, Cassandra, MySQL!), you can access it from Postgres – https://wiki.postgresql.org/wiki/Foreign_data_wrappers https://wiki.postgresql.org/wiki/Foreign_data_wrappers PG has some warts, and the config defaults are really more suitable for a RaspberryPI rather than production use(so people sometimes get the wrong impression out of the box), but it is rock solid and can support so many different use-cases. It's one of the few pieces of software I could feel confident that, due to the way it's designed, my data will still be there even if someone yanks a server power cord.