code: def get_cache_key(self, offset=0, limit=0, order=None, post_slug=''):
          
          return hashlib.sha1(
              '.'.join([
                  str(self._get_data_source_url()),
                  str(offset),
                  str(limit),
                  str(order),
                  str(post_slug),
                  ])
          ).hexdigest()
docs: The return of Get