Partial
Resolved
Increased latency
03:53 UTC
+0 min
Investigating
We are investigating elevated latency on Web App. Requests are completing, but slower than usual.
04:20 UTC
+27 min
Identified
The slowdown has been traced to a database query introduced in the latest deploy.
04:51 UTC
+58 min
Monitoring
A fix has been deployed and latency is returning to baseline. We are monitoring.
05:23 UTC
+1 h 30 min
Resolved
Latency has been back at baseline for 15 minutes. The incident is resolved.
Root cause
A new query in the latest deploy was missing an index and scanned a large table on every request. The index has been added and query plans are now checked in CI.