The feed is down.
A traffic spike just hit a single overloaded server. Users can't refresh their feeds. You're on call — find the bottleneck and fix it.
- Traffic
- 100,000req/s
- App server CPU
- 98%
- p95 latency
- 4,200ms
- User impact
- 504errors
- No sign-up
- About 2 minutes
- +150 XP