Blue/green deployment fails during switch-over with partial decommissioning; recovery and process changes?
Tests whether you can recover when a blue/green rollback path is compromised. Strong answers stop the bleed, revive blue if possible, and mandate keeping blue fully warm until green is stable. Red flag: "just roll back" ignoring partial decommissioning.
This tests operational judgment when a blue/green safety net is compromised. A strong response stops the traffic shift, then assesses whether partially decommissioned blue can be revived or scaled back up to carry load while green is drained. Long term, it insists on keeping blue fully warm until green is bedded down, adds canary traffic shifting, and separates schema changes from application deploys. Red flag: treating rollback as trivial without acknowledging degraded blue state or data consistency risks.
Read the original → martinfowler.com
- #ci/cd
- #deployment
- #incident-response
- #blue-green
- #sre
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