Rolling Updates & Rollbacks

Day 86 of 100 Days of MLOps. Shipping a new model version shouldn't mean taking your service down. Today you learn Kubernetes' answer: rolling updates that replace pods gradually — a few at a time, new ones ready before old ones leave — so the service stays up throughout. You'll set maxSurge and maxUnavailable for true zero-downtime, watch a version roll out, and see how one command (kubectl rollout undo) rolls a bad model straight back. It's how you ship to production with confidence instead of a maintenance window. Runs 100% locally on any OS.