Disaster Recovery Strategies
Develop comprehensive disaster recovery plans, including backup and restore procedures for replicated environments.
DR for Replicated PostgreSQL
Even with high availability (HA) setups like replication, unexpected disasters can strike. Think data center outages, major corruption, or human error.
Disaster Recovery (DR) is your plan B. It's about recovering your database system after a catastrophic event to minimize data loss and downtime.
DR vs. HA: What's the Difference?
It's easy to confuse High Availability (HA) with Disaster Recovery (DR), but they serve different purposes:
- HA: Aims to keep systems running with minimal interruption during minor failures (e.g., a single server crash, network glitch). It often involves automatic failover to a standby.
- DR: Focuses on recovering from major, widespread failures that take down an entire region or multiple components, where HA alone might not suffice.
Replication is a cornerstone for both, but DR requires additional planning for recovery.
All lessons in this course
- Automatic Failover Tools (Patroni)
- Monitoring Replication Health
- Disaster Recovery Strategies
- Connection Routing with PgBouncer and HAProxy