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Blue-green deployment

A release method with two identical production environments. You deploy the new version to the idle one, switch all traffic to it at once, and switch back if it fails, so rollback is fast.

Delivery

In Quorum#

The game has no blue-green option yet. The closest is the Continuous delivery research: a deploy takes 5 minutes instead of 30, and you can roll back a Bad deploy. A rollback ends the Incident at once and puts its Features back in line for the next deploy.

Canary deployment, Feature flag, DORA metrics, MTTR

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