EU Production Database Performance Incident

Incident Report for Sumsub

Resolved

Description:
Between 15:00 and 18:08 UTC on February 26, 2026, one database node in our EU production cluster experienced network throttling, resulting in increased query latency. This manifested as general interface sluggishness and intermittent API response delays.

Root Cause:
A spike in traffic triggered AWS network throttling on the affected database instance, leading to degraded performance.

Resolution:
Traffic was redirected to another instance, restoring normal operation.

Next Steps:
We are strengthening network monitoring, reviewing instance sizing, and working with the platform team to implement additional traffic control measures to prevent recurrence.

Posted Feb 26, 2026 - 15:00 UTC