Professional Cloud DevOps Engineer

By Google · Question Mode

QuestionQ15

Implementing observability practices and troubleshooting issues

You are conducting an experiment to determine whether users like a new feature in a web application. Soon after deploying the feature as a canary release, you see a spike in 500 errors returned to users, and monitoring indicates higher latency. You want to minimize the negative effect on users as quickly as possible. What should you do first?

Explanation

A canary deployment that correlates with a sharp rise in user-facing errors and latency should be rolled back immediately to stop exposing users to the suspected faulty release. Rollback is the fastest mitigation; monitoring, root-cause investigation, and postmortem documentation follow once user impact is contained.

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