On May 12, 2025 at 23:22 UTC, we observed elevated errors and increased latency for customers using our Presence service in the Virginia (US-East), California (US-West), and Tokyo (AP-North) regions. After discovering the source of the errors and latency, a solution was set up and ready to be implemented, but the incident was resolved before it was implemented.
This issue occurred because we could not be sure that the fix would not negatively impact some functionality of the presence system.
To prevent a similar issue from occurring in the future, we are ensuring that all presence features work with channel sharding to safely enable the solution to any sudden usage changes.