Incident Library

Organisation

PubNub

PubNub · pubnub

3 cases · 2025 to 2026

Root cause Capacity exhaustion1Cloud provider outage1Configuration change1
Component Cloud load balancer1Service discovery1
Contributing factor Unverified assumption1Circular dependency1Monitoring blind spot1No runbook1No headroom1Partial rollout1
Symptom High error rate2High latency2Inconsistent reads from a data store1Misrouted requests1

Cases

  1. IL-0560 Some PubNub messages in the US East point of presence were misrouted with no error and not delivered right awayPubNub · 2026

    Root cause Configuration change

  2. IL-0559 PubNub services degraded in US-East during an AWS outage in the IAD region, and failover load then degraded US-WestPubNub · 2025

    Root cause Cloud provider outage

  3. IL-0558 New PubNub instance types in FRA hit connectivity limits, and Pub/Sub, History and Presence saw intermittent errorsPubNub · 2025

    Root cause Capacity exhaustion