def remove_cache(self, namespace, key=None):
        if key is None:
            self.cursor.execute('DELETE FROM gauged_cache '
                                'WHERE namespace = %s', (namespace,))
        else:
            self.cursor.execute('DELETE FROM gauged_cache '
                                'WHERE namespace = %s and `key` = %s',
                                (namespace, key))
Remove all cached values for the specified namespace,
dataset/ETHPy150Open chriso/gauged/gauged/drivers/mysql.py/MySQLDriver.remove_cache