Failover
Switching automatically (or manually) from a failed primary system to a healthy standby. Common patterns: DNS failover, database failover replicas, multi-region active-passive.
Source
- AWS Well-Architected — Reliability Pillar — Plan for failure
Related terms
Blue-Green Deployment
A zero-downtime release strategy with two identical environments.
Rolling Deployment
A release strategy that replaces instances of an old version with the new version gradually, a few at a tim…
Circuit Breaker
A pattern where a client temporarily stops calling a failing downstream service after a threshold of errors…
Queue Saturation
A failure mode where work arrives at a queue faster than it's processed, the queue grows unbounded, and lat…
ETL Pipeline
"Extract, Transform, Load" — a scheduled data pipeline that pulls data from a source, transforms it, and wr…
Cron Job
A scheduled task that runs at fixed times or intervals, defined by a `crontab` expression.
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