Set application_name in every connection string. It's the cheapest observability win PostgreSQL offers—one GUC that makes 2am debugging actually possible.
PostgreSQL 19 brings self-tuning worker pools and read-ahead improvements to async I/O, plus EXPLAIN ANALYZE (IO) to finally see what's happening under the…
A GUC with a dire warning: `allow_system_table_mods` lets superusers edit PostgreSQL's system catalogs, and the docs say it can cause irretrievable data loss.
PostgreSQL 19 proposes `pg_plan_advice`: a pluggable plan-advice mechanism that lets you capture plan shapes via EXPLAIN and apply them without touching SQL.