PostgreSQL is well-supported by its active community. There are more than a dozen mailing lists available, categorized into topics like:PostgreSQL User Groups all over the world, and there is also an active IRC & Slack community.
There are also links to international sites that contain PostgreSQL information in various languages.
People in the PostgreSQL community also contribute to:
|Bruce Momjian: Rerouting Server Log Entries|
|Vik Fearing: Benchmarking PostgreSQL: Setting up a RAID Array from Scratch|
|Jimmy Angelakos: Changing your huge table's data types in production [FOSDEM 2021]|
|Kaarel Moppel: Finally – a system level “read all data” role for PostgreSQL!|
|Chengxi Sun: How does Postgres handle external parameters?|
|Egor Rogov: WAL in PostgreSQL: 2. Write-Ahead Log|
|Bruce Momjian: The Power of Synchronous_commit|