Blue-Green Deployment Strategy

Maintains two identical production environments (Blue and Green). One serves live traffic while the other is updated. Traffic is cut over instantly at the router.

STAFF ENGINEER TAKEAWAY: Instantaneous rollback: if the new Green environment exhibits bugs, switch the load balancer back to Blue in seconds.

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More Topics in 10. Deployment & DevOps

🔄CI/CD Continuous Integration & Delivery

Automates testing, linting, container building, and deployment of code updates, accelerating release velocity from months to minutes.

🐤Canary Deployment Strategy

Rolls out new software to a tiny subset of users (e.g. 2%), monitors error rates and latency, and incrementally shifts remaining traffic if health checks pass.

🔄Rolling Deployment Strategy

Incrementally updates instances of an application by replacing old pods/servers with new ones one by one or in small batches.

🔁GitOps Synchronization & Reconciliation Loop

A declarative infrastructure practice where Git is the single source of truth. Automated controller agents continuously reconcile cluster state to match Git.