Postgres Uptime Starts with Failover Design: A Production Blueprint for High Availability

A Postgres database can have replicas, a failover manager, and a green dashboard, and still go down the first time the network misbehaves. Uptime isn't a feature you switch on. It comes from design decisions made across every tier between your application and your data.

Join Michael Willer (Senior Sales Engineer) and Gianni Ciolli (VP, Practice Solutions) for a practical blueprint for Postgres high availability: architecture choices, the quorum math behind your minimum topology, and the failure modes that turn a routine event into an outage, including a real field incident where a correct fencing action left a cluster with no primary. You'll leave with a framework for what to build, test, and watch, whichever tools you run.

What you'll learn:

• Architecture choices: What makes active/passive enough, and how consistency versus latency shows up in your replication settings.
• Quorum for every tier: Why the minimum is three, and how to apply quorum to your database, proxy, and consensus layers.
• Fence, then promote: Why split-brain is a fencing problem rather than a quorum problem, and why you fence first and promote second.
• Failover tuning: How flapping, premature promotion, and cascading elections happen, and how to tune for a slower correct failover over a fast wrong one.
• Testing and backups: How game days and chaos testing expose gaps early, and how standbys and physical backups play different roles.