Glossary term
What is Rolling update? Meaning for developers
In System Design
Replace instances a few at a time. Example: Kubernetes' default deploy strategy.
Learn it properly · System DesignLesson 58: CI/CD & Deployment Strategies: Blue-Green and CanaryFriday-evening deploys that need three people and a prayer are optional. CI that catches problems before merge, continuous delivery vs deployment, rolling, blue-green and canary releases — with a simulator — feature flags, zero-downtime database migrations and the DORA metrics.In Docker & Kubernetes
Replacing pods a few at a time so the app stays up, paced by maxSurge and maxUnavailable.
Learn it properly · Docker & KubernetesLesson 7: Scaling, Rollouts and Reliability: Probes, Resources and AutoscalingReadiness and liveness probes, requests and limits, rolling updates and rollbacks, HPA, PodDisruptionBudgets.