Expo incident

Some push notifications are not being delivered

Major Resolved View vendor source →
Started
Apr 09, 2026, 10:25 PM UTC
Resolved
Apr 09, 2026, 11:29 PM UTC
Duration
1h 4m
Detected by Pingoru
Apr 09, 2026, 10:25 PM UTC

Affected components

Push Notifications Broker

Update timeline

  1. investigating Apr 09, 2026, 10:43 PM UTC

    We are investigating a partial outage of the push notification service.

  2. resolved Apr 09, 2026, 11:36 PM UTC

    The root cause has been fixed and our charts confirm availability is back to normal. We apologize for the outage.

  3. postmortem Apr 09, 2026, 11:36 PM UTC

    The Expo push notification service suffered from partial unavailability due to an outage of one of our cache servers. Specifically, we deployed a change that optimized our cache entries to be more compact to improve the performance and efficiency of our caches. However, the cache could not handle the load from evicting the old entries. Clearing the cache solved the problem.

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