Increased Latency for Small Subset of Customers

Incident Report for Grafana Cloud

Resolved

A recent rollout caused the AuthZ (RBAC) service to perform many redundant folder-tree fetches for each authorization check. For a small number of tenants in the prod-us-east-0 and prod-eu-west-2 regions with very large folder trees. This added a few milliseconds to every check, which increased request latency.

The approximate timeframe of the impact is:

2026-02-26 17:24:43 UTC to 2026-02-27 14:33:53 UTC.

This has now been resolved.

Posted Feb 27, 2026 - 16:25 UTC