Postgres Logging for Performance Optimization

PostgreSQL provides comprehensive logging capabilities for performance optimization and troubleshooting. Key configurations include setting up log collectors, choosing appropriate log formats (stderr, csvlog, jsonlog), and configuring severity levels. For performance monitoring, enable logging of slow queries with log_min_duration_statement, lock waits with log_lock_waits, and temporary file usage with log_temp_files. The auto_explain extension automatically logs query execution plans for analysis. Proper log rotation prevents disk space issues, while tools like pgBadger can parse logs into visual reports. Additional audit logging is available through the pgAudit extension for tracking user actions and data changes.