Incident report: API availability

Date: 2026-09-02 T 07:05 CEST
Duration: Approximately 10 minutes

Impact: Some API requests and background operations were delayed or failed for a subset of stores. This also had a knock-on effect on the API availability for other stores as workers got tied up, until automatic scaling added new servers.

What happened

One of our database servers stopped processing queries after an internal MariaDB/InnoDB synchronization operation became s...