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:
|movead li: PostgreSQL_WAL_Evolution_Part_II|
|movead li: PostgreSQL_WAL_Evolution_Part_I|
|Dan Langille: creating a Nagios check on a PostgreSQL table|
|Dan Langille: Changing a column type|
|Pavel Stehule: pspg 2.7.0 with inotify support|
|Hans-Juergen Schoenig: pg_show_plans: Watching execution plans in PostgreSQL LIVE|
|David Z: PostgreSQL GSSAPI Authentication with Kerberos part-2: PostgreSQL Configuration|