The database backends. Using Django models to store task metadata.
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cleanup()
- Delete expired metadata.
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get_result(task_id)
- Get the result for a task.
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get_status(task_id)
- Get the status of a task.
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is_done(task_id)
- Returns True if task with task_id has been executed.
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store_result(task_id, result, status)
- Mark task as done (executed).