code: def cache_get(key):
      
      packed = cache.get(_hashed_key(key))
      if packed is None:
          return None
      value, refresh_time, refreshed = packed
      if (time() > refresh_time) and not refreshed:
          cache_set(key, value, settings.CACHE_SET_DELAY_SECONDS, True)
          return None
      return value
docs: Wrapper for ``cache.get``. The expiry time for the cache entry
      is stored with the entry. If the expiry time has past, put the
      stale entry back into cache, and don't return it to trigger a
      fake cache miss.