Weekly maintenance window Scheduled
Weekly maintenance window: Sundays, 09:30 to 11:30 UTC. We replace the servers underneath the service in this window. Your instance stays up; for a few seconds at a time, requests can fail with an HTTP 502, 503 or 500 while a server is swapped out. A retry a few seconds later normally succeeds, so make sure CI jobs that publish or download have retries turned on. No notice is sent for routine work in this window.