Firebase scheduled functions monitoring matters because scheduled backend work is easy to forget until it quietly stops doing its job. A Cloud Function might clean old records every night, sync subscription status from a payment provider, send reminder notifications, refresh search indexes, or export analytics data. When that function runs correctly, nobody thinks about it. When it stops running, the app may still look healthy from the outside. The website is up. The API responds. Users can log in. But the scheduled work is missing. That is the dangerous part: Firebase scheduled functions often fail in places that normal uptime monitoring cannot see. The problem A Firebase scheduled function is usually created with Cloud Scheduler behind the scenes. Depending on the generation and setup, it may be triggered through Pub/Sub or the newer scheduler integration. A typical job might look like this: const { onSchedule } = require ( " firebase-functions/v2/scheduler " ); exports .…