Daily Term: Failover

Failover

Failover is the process of automatically switching to a backup system or component when the primary one fails, ensuring continuity. For example, if a primary database server crashes, a failover mechanism might switch traffic to a standby replica. Failover enhances high availability and fault tolerance, often used in HA systems, but it requires replication, monitoring, and testing to ensure seamless transitions without data loss or downtime.

Date: 2025-09-01