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:
|Magnus Hagander: Getting random rows faster. Very much faster.|
|Bruce Momjian: Postgres on Big Iron|
|Alexander Korotkov: Jsonpath: ** Operator and Lax Mode Are't Meant to Be Together.|
|Devrim GÜNDÜZ: CVE-2021-20271 and PostgreSQL YUM/DNF repo|
|Luca Ferrari: To WAL or not to WAL? When unlogged becomes logged...|
|Florian Nadler: Publishing maps with Geoserver and PostGIS|
|Paul Ramsey: (The Many) Spatial Indexes of PostGIS|