At 18:36 UTC on August 9, 2022, we observed a small number of errors served across all PubNub services in our US-West PoP. We identified a configuration sync issue with a load balancer, removed it from service, and the issue was resolved at 19:29 UTC. This issue occurred because alerting did not include the specific configuration problem affecting the load balancer which had to be identified through investigation.
To prevent a similar issue from occurring in the future we are working to enhance server-level monitoring and alerting in the coming days. This will ensure we are immediately aware of any recurrence and can act quickly to resolve it.