def delete(self, key, cas=0):
        """
        Delete a key/value from server. If key does not exist, it returns True.

        :param key: Key's name to be deleted
        :param cas: CAS of the key
        :return: True in case o success and False in case of failure.
        """
        server = self._get_server(key)
        return server.delete(key, cas)
Delete a key/value from server. If key does not exist, it returns True.

        :param key: Key's name to be deleted
        :param cas: CAS of the key
        :return: True in case o success and False in case of failure.