PubNub outage, 7 September 2025
Increased Error Rate and Latency for Presence
- Started
- Resolved
- 7 Sept 2025, 19:02 UTC (after 18 min)
- Impact
- Not stated
- Affected
- Presence Service
Last update from PubNub
### **Problem Description, Impact, and Resolution** At 18:14 UTC on September 7, 2025 we observed increased error rates and latency for our Presence service in our San Jose, Virginia, and Tokyo regions. We increased capacity in those regions and the issue was resolved at 18:17 UTC. This issue was a recurrence of the issue [experienced on September 2, 2025](https://status.pubnub.com/incidents/1n8xk6w5y9lk), where a bug in one of our APIs allowed a request to execute an operation that exceeded assumed limits in extreme cases, causing out-of-memory conditions for the Presence service. ### **Mitigation Steps and Recommended Future Preventative Measures** In the previous instance of this iss...
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