Pusher change history

Pusher reported a major AP4 incident affecting Channels API message publishing, with elevated errors and latency, starting 2025-10-21 15:06 UTC and resolved at 2025-10-21 17:43 UTC (computed duration: 2 h 36 min). Pusher identified an issue with a backend caching server and implemented a fix; many customers may have been unable to publish new messages.

Pusher reported a major US3 outage affecting Channels presence channels, Channels REST API and Channels WebSocket client API, with latency, 503 errors and full service downtime. It started at 2025-10-20 18:36 UTC and resolved at 2025-10-20 20:41 UTC, lasting 2 h 5 min. The postmortem identifies Redis cluster startup failures; Pusher reported implementing a fix.

Pusher reported major increased latency on Channels cluster `mt1`, affecting Channels Dashboard, Channels presence channels, Channels REST API and Channels WebSocket client API. It started at 2025-10-20 17:26 UTC and was resolved at 2025-10-21 07:14 UTC, lasting 13 h 48 min. Pusher attributed the latency to an external cloud-provider incident.

Pusher’s critical US2 outage affected most traffic, including Channels presence channels, REST API, Webhooks and WebSocket client API. It started at 2024-09-08 18:00 UTC and was resolved at 2024-09-08 23:06 UTC, lasting 5 h 5 min. Pusher reported deploying a fix and restoring services; no cause was specified.

Pusher reported a critical interruption in Channels Stats Integrations: stats collection stopped at 2024-06-05 21:01 UTC, leaving customers without stats collection for 1 h 38 min. The vendor reported a fix at 2024-06-05 22:23 UTC and resolved the incident at 2024-06-05 22:39 UTC; no cause was stated.

Pusher reported a critical public EU cluster outage affecting customers in that region; other regions were unaffected. The incident ran from 2023-12-05 17:34 UTC to 2023-12-05 18:11 UTC, lasting 36 min. Pusher identified the issue and implemented a fix, reporting all services back online at 17:47 UTC.