code: def cache_memlimit(self, memlimit):
          
  
          self._fetch_cmd(b'cache_memlimit', [str(int(memlimit))], False)
          return True
docs: The memcached "cache_memlimit" command.
  
          Args:
            memlimit: int, the number of megabytes to set as the new cache memory
                      limit.
  
          Returns:
            If no exception is raised, always returns True.