如何清除app引擎中的所有memcache.Java环境

import net.spy.memcached.MemcachedClient;

public class ClearMemcache {
    public static void main(String[] args) {
        try {
            // 连接到memcache服务
            MemcachedClient memcachedClient = new MemcachedClient(new InetSocketAddress("memcache服务器地址", 端口号));

            // 清除所有的memcache数据
            memcachedClient.flush();

            // 关闭连接
            memcachedClient.shutdown();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}