Incident Library

Organisation

Fly.io

Fly.io · fly-io

2 cases · 2026

Root cause Capacity exhaustion1Faulty deployment1
Component CDN and edge network1Host routes and routing rules1Network control plane (SDN)1Service discovery1
Contributing factor Unverified assumption1Unknown limit1No capacity planning1Overlapping failures1Gap in automated tests1
Symptom High latency1Network unreachable1Misrouted requests1

Cases

  1. IL-0354 Fly.io private networking (6PN) broke for some machines after edges received gateway /80 routesFly.io · 2026

    Root cause Faulty deployment

  2. IL-0353 Fly.io edge proxies in US west coast regions were overloaded and flapping, with lazy loader delays of secondsFly.io · 2026

    Root cause Capacity exhaustion