PostgreSQL seems to have become the be-all, end-all SQL database that does everything and does it all well. And it's free!
I'm wondering why anyone would want to use anything else at this point (for SQL).
I'm wondering why anyone would want to use anything else at this point (for SQL).
* MySQL has a much easier story of master-master replication.
* Mongo has a much easier story of geographic distribution and sharding. (I know that Citus exists, and has used it.)
* No matter how you tune Postgres, columnar databases like Clickhouse are still faster for analytics / time series.
* Write-heavy applications still may benefit from something like Cassandra, or more modern solutions in this space.
(I bet Oracle has something to offer in the department of cluster performance, too, but I did not check it out for a long time.)
Any non-trivial amount of data and you’ll run into non-trivial problems.
For example, some of our pg databases got into such state, that we had to write custom migration tool because we couldn’t copy data to new instance using standard tools. We had to re-write schema to using custom partitions because perf on built-in partitioning degrades as number of partitions gets high, and so on.
Personally, I wouldn't use any SQL DB other that PostgreSQL for the typical "database in the cloud" use case, but I have years of experience both developing for and administering production PostgreSQL DBs, going back to 9.5 days at least. It has its warts, but I've grown to trust and understand it.
It will take years to call this mature. Certainly not "soon"