Post #3622798

DB pool exhaustion: connections climb for hours, everything looks fine, then max_connections hits and your app collapses. Check yours: SHOW VARIABLES LIKE 'max_connections'. Default 151? Warning at 70% (~105), critical at 85% (~128). Track threadsConnected in New Relic. Setup guide: danielpetrica.com/newrelic/ #NewRelic #DevOps #MySQL