people · May 20, 2026

PlanetScale Postgres deploys with one primary and two read-only replicas by default

Dwight Watson described deploying a new Postgres database on PlanetScale with default configuration of one primary and two read-only replicas on May 19, 2026. Users can promote a replica to primary for failover or use the replicas to spread read load via |replica username suffix. Laravel configuration supports separate read and write credentials to distribute queries automatically. The setup reduces primary database load during high-traffic periods.