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: Challenging Assumptions|
|Andreas 'ads' Scherbaum: Pavlo Golub|
|ahsan hadi: Calling Stored Procedure from JAVA – Part 2|
|Tatsuo Ishii: Visibility with query cache|
|Pavel Stehule: pspg 4.6.0 released|
|Avinash Vallarapu: How difficult is to create a database software like PostgreSQL ?|
|Craig Kerstiens: Your Guide to Connection Management in Postgres|