Challenges

Real production decisions. Defend your call against a senior engineer, then get scored against an answer key. How it works

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6 of 53 challenges

CI/CD

6

LockedTests Pass Locally, Fail in CI. Just Retry?Your suite is green on your laptop but red in CI. A teammate wants to add a retry and re-run until green. Defend what you actually do.beginner8 minbeginner8 min
Locked3 AM Outage: Roll Back or Fix Forward?A deploy 20 minutes ago correlates with a spike in 500s. You are on call. Defend whether to roll back or fix forward.intermediate12 minintermediate12 min
LockedAfter an Outage, Mandate Manual Approval on Every Deploy?After a bad deploy caused an outage, leadership wants a mandatory human sign-off on every production release. Defend a better way to prevent the next one.intermediate13 minintermediate13 min
LockedDeploy From CI: Paste AWS Keys Into GitHub Secrets?Your GitHub Actions pipeline needs to deploy to AWS. A teammate wants to paste a long-lived IAM access key into repo secrets. Defend the better option.intermediate12 minintermediate12 min
LockedThe Pipeline Is Slow. Skip Tests to Ship?A 40-minute pipeline is blocking releases. A teammate wants to skip the test stage to ship faster. Defend your call.intermediate12 minintermediate12 min
LockedYour CI Has Keys to Prod and Pulls Unpinned DepsCI pulls unpinned dependencies, runs them, and holds prod credentials. A teammate says just add a vulnerability scanner. Defend a real hardening plan.advanced15 minadvanced15 min