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: Synchronizing Authentication|
|Richard Yen: The Curious Case of Split WAL Files|
|Jonathan Katz: Scheduling Backups En Masse with the Postgres Operator|
|Bruce Momjian: Insufficient Passwords|
|Hans-Juergen Schoenig: pg_permission: Inspecting your PostgreSQL security system|
|Luca Ferrari: PostgreSQL to Microsoft SQL Server Using TDS Foreign Data Wrapper|
|Venkata Nagothi: An Overview of JSON Capabilities Within PostgreSQL|