Latency spike triage
You're paged at 2am: the main API's p99 latency jumped from 80ms to 4s and the error rate is climbing past 5%. Walk through your first 15 minutes.
What a strong answer looks like
Stop the bleeding first (mitigate), then form hypotheses from real signals. Separate root cause from symptom, communicate status as you go, and close with what prevents a repeat.
0:00 of about 20 min
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.