Blue-green deployment.
also: blue-green · blue/green deployment · blue green deploymentRunning two identical environments, deploying the new version to the idle one and switching all traffic at once, with instant rollback.
the two-minute refresher
- Blue serves v1.0; deploy v1.1 to green and smoke-test it.
- Flip the load balancer: green gets ALL traffic.
- Problems? Flip back: instant rollback.
- Costs double capacity, and database changes must work for both versions.