RELIABILITY ENGINEERING
Backups are only useful when recovery is understood
How teams can think about snapshots, retention, restoration, replication, and recovery decisions for PostgreSQL.
A backup policy is incomplete until the team understands how to locate a recovery point and restore it safely.
Snapshots and recovery points
Snapshots provide historical positions that can be used for recovery or investigation. The right retention window depends on business needs, operational risk, and storage policy.
Test the restore path
A successful backup operation does not prove that an application can recover. Restore tests should verify that the resulting database can be opened, queried, and used by the application.
Recovery is an operational decision
Recovery often involves choosing between data freshness, downtime, consistency, and customer impact. Documenting the decision path makes incidents calmer and more repeatable.