Rolling deployment.
also: rolling deployments · rolling update · rolling updates · rolling deployReplacing old instances with new ones a few at a time, checking health before continuing, so there is no downtime.
the two-minute refresher
- v1.0 → v1.1 one instance (or a few) at a time behind the load balancer.
- Health checks gate each step.
- Old and new versions run side by side during the rollout, so they must be compatible.
- Rollback is another slow roll.