Zero Downtime Deployment
Medium — good to knowCI/CD & DevOps
ELI5 — The Vibe Check
Old-school deploys meant 5 minutes of downtime while the server restarted. Users got a 503 and emailed you. Zero downtime deployment spins up new servers alongside old ones, shifts traffic gradually, and tears down old ones only when new ones are healthy. Users never know a deploy happened. That is the goal.
Real Talk
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Related Terms
Blue-Green Deployment
Blue-green deployment means running two identical production environments — Blue (current) and Green (new).
intermediateCI/CD & DevOps
Canary Release
A canary release is like sending a canary into a coal mine — you deploy the new version to a tiny fraction of users first and watch closely.
intermediateCI/CD & DevOps
Kubernetes
Kubernetes is a robot manager for your containers.
advancedCI/CD & DevOps