Popular Zero Downtime Deployment Articles

Zero-downtime deployment is the practice of releasing a new application version without interrupting service availability. Instead of stopping the application, replacing its code, and restarting it, the deployment system starts healthy new instances, routes traffic to them, and safely retires the ol

Rolling deployment is a software release strategy that updates an application incrementally instead of replacing every running instance at once. The deployment controller starts new instances, waits for them to become ready, and removes old instances in batches until the entire application runs the

Deploying a new application version without downtime requires more than starting new instances. Production traffic must move from the old version to the new version without routing requests to unready instances, interrupting in-flight work, or exposing an unhealthy release to every client .