Downtime: resolved.

Root cause: Our cloud provider restarted Redis during a scheduled maintenance operation. A race condition bug in Nango's Redis reconnection logic led to the creation of orphans Redis clients that eventually used all available connections, preventing any logic that depends on Redis to run successfully.

Mitigation: We fixed our Redis disconnection logic. We're investigating how to recover better from Redis's unavailability. We plan to migrate to a different cloud provider, which doesn't require database maintenance.

Downtime: API/dashboard down, sync/action errors.