Rollback

You might say

When a new version sends login error rate sharply up, roll back to the last known-good version; then confirm both running version and metrics recover.

Rollback restores a system or configuration to a previous known-good state to stop current impact.If v2 causes abnormal login errors, switch the running image or configuration back to v1 and check the live version, login result, and error rate recover. It aims to reduce impact first. Fixing the issue and shipping a new version later is a forward fix, not rollback.

Know first

Deployment Monitoring

Rollback

How abnormal v2 returns to known-good v1

PRODUCTION DEPLOYMENTScheckout-api

6.8% errors

v2.14.0deploy #8842 · 09:42100% traffic

v2.13.4deploy #8819 · 07/25artifact kept

Error rate

6.8%

Rollback switches immediately to an existing older artifact; it does not wait for a forward fix.

Rollback success needs two kinds of evidence

Restore a known-good state to reduce impact: When a new version materially affects people, returning to a verified version or configuration can stop spread quickly. State the target clearly rather than saying only “restore it.”

A completed switch is not recovered health: First confirm the target version is actually running, then inspect login success, error rate, or key action recovery. If metrics do not recover, the problem may extend beyond this version.

Quick checkChoose the best answer

After v2 raises login error rate, the team switches the image back to v1. What completes rollback verification?

Confirm production is actually running v1 and that login error rate and login success recoverEnd when the command reports success, without checking production metricsImmediately start fixing v2 and ignore the current live state

You can say this to an AI Agent

If login error rate crosses its threshold, roll production back from v2 to the last known-good v1. Afterward, confirm both that v1 is actually running and that login error and success rates recovered; report both pieces of evidence.

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1Monitoring→2Feature Flag→