Pattern 80 / AVAILABLE

Active-Passive Failover

Use this when Recovering from a primary site failure.

Pressure: Recovering from a primary site failure
Mechanism: Keep a standby environment ready and promote it when health checks or operators trigger failover
Toll: Rpo/rto depend on replication and rehearsed runbooks

Diagram for Active-Passive Failover — Architecture plate80

Executive brief

Active-Passive Failover fits when Recovering from a primary site failure. Mechanism: Keep a standby environment ready and promote it when health checks or operators trigger failover. Use it for Databases, regional stacks, critical internal apps. The toll: RPO/RTO depend on replication and rehearsed runbooks.

Use when

Databases, regional stacks, critical internal apps.

Example

Use active-passive failover when databases, regional stacks, critical internal apps..

Review framing

Describe the pressure first, then the mechanism, then the cost. That keeps the design grounded.

Same pressure family

Availability

79Multi-Region Active-Active 83Static Stability