def should_stale_item_be_fetched_synchronously(self, delta, *args, **kwargs):
        if self.fetch_on_stale_threshold is None:
            return False
        return delta > (self.fetch_on_stale_threshold - self.lifetime)
Return whether to refresh an item synchronously when it is found in the
dataset/ETHPy150Open codeinthehole/django-cacheback/cacheback/base.py/Job.should_stale_item_be_fetched_synchronously