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What happens to the nightly report the day that one server gets replaced?
What you'll have at the end
A periodic task defined in code, anchored to a real time of day, that a scheduler dispatches on time even from a freshly replaced host with no memory of the one before it, with no server-specific cron entry anywhere.
You need
A report job that already runs correctly when called directly, and a scheduler process your app's own code can already configure.
Not covered
Stopping the same schedule from firing twice when more than one scheduler process is alive at once, and choosing a schedule store an operator can edit at runtime instead of in code.
Leans on
Stop a scheduled job from firing once per worker replica
go there once you scale the worker fleet past one replica, since running more than one scheduler at once is a different failure than the single-host replacement this recipe covers.
Make a background job idempotent
go there if the report can't tolerate ever running twice, since a scheduler's at-least-once guarantee still allows a rare duplicate dispatch even with a correctly chosen schedule.
Hand a slow endpoint to a real task queue
go there first if the report doesn't have a task queue wired up at all yet, since this recipe assumes one already exists.
Checked 19 Aug 2026
Part of the Background Job Processing Systems cookbook