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:
|Hubert 'depesz' Lubaczewski: Waiting for PostgreSQL 14 – Add pg_stat_database counters for sessions|
|Luca Ferrari: PostgreSQL Literate Programming with GNU Emacs|
|Egor Rogov: MVCC in PostgreSQL — 6. Vacuum|
|Hubert 'depesz' Lubaczewski: Are there limits to partition counts?|
|Pavel Stehule: pspg 4.0.0 released|
|cary huang: How PostgreSQL Executes Sequential Scans with the Help of Table Access Methods APIs|
|Hubert 'depesz' Lubaczewski: How to run some tasks without user intervention, at specific times?|