PubNub outage, 10 June 2026
Replication failures
- Started
- Resolved
- 10 Jun 2026, 20:45 UTC (after 31 min)
- Impact
- Not stated
- Affected
- Publish/Subscribe Service, North America Points of Presence
Last update from PubNub
## Problem Description, Impact, and Resolution At 19:50 UTC on June 10, 2026, we observed a small fraction of publishes originating from US-EAST-1 failing to replicate to subscribers globally. We removed the degraded publisher pod from service and the issue was resolved at 21:21 UTC on June 10, 2026. The root cause of the incident was triggered by a single process that fell into a degraded state where it continued receiving inbound traffic and passing health checks, but traffic sent outbound from the process was failing at an abnormally high rate. Our automated health check/recovery system did not auto-detect and replace the degraded process because its health check API reported itself as...
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