The system has fully recovered and checks are being scheduled as expected. This incident is now resolved.
Maintenance has been cancelled.
The issue has been resolved.
We have mitigated the issue and service has recovered.
Creating, updating, or cloning checks and check groups could have returned errors; running checks and alert notifications were unaffected.
Maintenance is complete.
From 14:49-14:55UTC there was a delay in processing some check runs. This incident is now resolved, and all checks are again being processed at their scheduled frequency.
Check runs on eu-west-2 London experienced an interruption from 7:57UTC to 8:20UTC. This resulted in an increased scheduling delay and also an increase in check failures due to timeouts. This issue is now resolved and check runs in eu-west-2 London are running normally.