Cache hit rate drops
A cache-heavy service's latency is creeping up and its hit rate is dropping, even though traffic is steady. You suspect the cache is evicting useful data. How do you investigate?
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.