cache-refresh-lag-handoff

Instruction

Earlier we had user-profile complaints that did not look like the payments incident. Using the telemetry around that earlier cache-refresh problem, tell me which service owned it, about how high the cache refresh lag got, whether GET /api/users latency was spiking at the same time, and which deployment immediately preceded the issue. I need to know if this was a request-path outage or a lagging background refresh problem.