Postgres has a lot of engineering work put into it to handle all kinds of use cases, plus massive effort by the community building tutorials, videos, wrappers, libraries, etc. If you have a problem with Postgres config, or are trying to get it to do something odd, there is undoubtedly a bunch of Stack Overflow discussions about that thing. For most other databases, the selection of all of those is much thinner.
Additionally, often we believe our application needs feature X, and there is some database tech that purports to excel at X, the fact is postgres is probably able to do X unless you get to some extreme velocity or volume. Furthermore, by going with another database you are almost always giving up on features W, Y, and Z that you don't realize you need that Postgres supports and isn't supported by the "Exotic" database you are thinking of.
In short, Postgres has amazing breadth and depth in features and support and tooling. Be sure you are ok giving that up!
If you like Postgres, you may want to try TimescaleDB, which is a time-series database built on Postgres (packaged as a Postgres extension). Postgres database + time-series database all in one.
This btw is one of the reasons I love Postgres - its extensibility.
Did you guys used to call it just ScaleDB? I remember talking to some people about something called ScaleDB that was built on top of Postgres back when I was looking for database solutions for another product, this was in 2015. We ended up going with Druid for that.
Additionally, often we believe our application needs feature X, and there is some database tech that purports to excel at X, the fact is postgres is probably able to do X unless you get to some extreme velocity or volume. Furthermore, by going with another database you are almost always giving up on features W, Y, and Z that you don't realize you need that Postgres supports and isn't supported by the "Exotic" database you are thinking of.
In short, Postgres has amazing breadth and depth in features and support and tooling. Be sure you are ok giving that up!