Code RoomFeature flag service outage fallback
MediumPrep Room Coding #2838

Feature flag service outage fallback

On-callReliability & on-callCode quality & reviewMid–Senior~30 min

Your services fetch feature flags and dynamic config from a managed flag service (LaunchDarkly-style) at startup and via a streaming connection. At 16:00 the flag service has an outage. Within minutes, several of your services start misbehaving — some new pods crash on boot, and a few features flip to their 'off/default' state, breaking flows that depended on a flag being ON. Dashboards: the flag SDK logs streaming-connection errors and 'falling back to defaults'; your own services are otherwise healthy. How do you triage and mitigate?

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 30 min
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.