Engineering Practice
Putting it together: free-recall review
Retrieval beats re-reading. For each prompt, reconstruct a full answer from memory before opening the model answer — and make sure your answer connects the practice to the link before and after it in the loop, not just to itself.
Reconstruct the spine of the whole track — why the practices form one loop, the order that makes each link safe, and the seam failure when a dependency is skipped — without looking back at the lessons.
- 01Explain why the seven practices of this track are one feedback loop rather than a checklist of independent rituals, and trace the order of the links.
- 02Pick three practices and state, for each, the dependency it rests on and the failure mode if that dependency is skipped.
- 03Why does DORA insist on its four metrics moving together, and what specifically goes wrong when a team optimizes deployment frequency alone?
- 04A 20-service org's full end-to-end suite is slow and flaky, so engineers mute it and bugs reach prod. Diagnose the failure in loop terms and give the senior fix.
- 05Why is a feature flag a release tool rather than a quality gate, and what is the most quietly expensive way flags break the loop?
- 06Walk a single bad deploy through the intact loop and name which link gives each property: fast detection, fast recovery, and no recurrence.
If you could reconstruct each answer from memory, you hold the spine of the whole track: the practices are one closed loop with a load-bearing order, each link rests on a specific dependency whose absence inverts the practice into a liability, DORA’s four metrics govern the loop together rather than one ceremony in isolation, contracts beat brittle e2e at the merge gate, flags are a release tool and not a quality gate, and a postmortem only closes the loop when its action items are owned, tracked, and fed back upstream.