Zero-Downtime PostgreSQL Operator Migration: The Percona Standby Cluster Approach

As PostgreSQL workloads move to Kubernetes, minimizing service disruption during operator migration has become critical for production teams. Percona's hard fork of the Crunchy Data operator maintains architecture compatibility, enabling near-zero-downtime transitions using proven standby cluster methods. This practical approach is essential for environments where even brief downtime carries significant business impact.