This incident has been resolved. No user interaction is required to fix the issue. Users who were trying to use Charts may have to refresh the page. Triggers may have been missed during this time for exceptionally busy clusters.
Starting at 2025-01-15T01:02:00 UTC some Atlas Serverless instances in AWS Singapore region (ap-southeast-1) experienced downtime. The issue was due to unexpected memory exhaustion of the system that caused outage for a subset of the Atlas infrastructure in that region. A small number of serverless instances running on those infrastructure would have experienced downtime. Our engineers were alerted and the system was restored to health around 2025-01-15T01:44:00 UTC.
Microsoft Azure has updated their status post and indicated that impacted services are now recovered. Atlas cluster operations are no longer experiencing delays.