PostgreSQL High Availability: A Practical Guide with Patroni and pgBouncer

Introduction Your database is the last thing that should go down. Yet setting up PostgreSQL for high availability remains one of the most under-documented areas in the DevOps world. Most teams run a single Postgres instance until the day it dies, then scramble to set up replication while their users stare at error pages. This guide walks through a production-ready PostgreSQL HA setup using the tools that have become the industry standard: Patroni for automated failover, pgBouncer for connection