That's exactly what I do in python with celery. I order all dicts/lists and hash this final object. If hash is not found in the db, I set hash as the task id. W

That's exactly what I do in python with celery. I order all dicts/lists and hash this final object. If hash is not found in the db, I set hash as the task id. With `track started` setting I never run the same task twice.