java memcache

引用：http://blog.csdn.net/einarzhang/article/details/6064092

Memcache的介绍有很多，这里给出如何在Java中应用Memcache的基本方法

 

  1 安装Memcache服务器(windows)

下载windows版Memcache安装包，如memcached-1.2.6-win32-bin.zip，解压到指定位置，比如(D://memcache)，打开dos命令行，输入以下两个命令即可启动Memcache服务。

D:/memcache/memcached.exe -d  install 

D:/memcache/memcached.exe -d  start 

 

 

  2 下载Java版本的memcache客户端(以下列出常用的几种)。

 spymemcached ：

http://code.google.com/p/spymemcached/

 gwhalin / Memcached-Java-Client   

   https://github.com/gwhalin/Memcached-Java-Client/downloads

 Jcache

http://code.google.com/intl/zh-CN/appengine/docs/java/memcache/usingjcache.html

 

 

 

  3 下面给出两种方式调用Memcache

     

  gwhalin / Memcached-Java-Client调用方式如下：

  

 

public class MemcacheManagerForGwhalin {

    // 构建缓存客户端
    private static MemCachedClient cachedClient;
    // 单例模式实现客户端管理类
    private static MemcacheManagerForGwhalin INSTANCE = new MemcacheManagerForGwhalin();

    private MemcacheManagerForGwhalin() {
        cachedClient = new MemCachedClient();
        //获取连接池实例
        SockIOPool pool = SockIOPool.getInstance();

        //设置缓存服务器地址，可以设置多个实现分布式缓存
        pool.setServers(new String[]{"127.0.0.1:11211"});

        //设置初始连接5
        pool.setInitConn(5);
        //设置最小连接5
        pool.setMinConn(5);
        //设置最大连接250
        pool.setMaxConn(250);
        //设置每个连接最大空闲时间3个小时
        pool.setMaxIdle(1000 * 60 * 60 * 3);

        pool.setMaintSleep(30);

        pool.setNagle(false);
        pool.setSocketTO(3000);
        pool.setSocketConnectTO(0);
        pool.initialize();
    }

    /**
     * 获取缓存管理器唯一实例
     * @return
     */
    public static MemcacheManagerForGwhalin getInstance() {
        return INSTANCE;
    }

    @Override
    public void add(String key, Object value) {
        cachedClient.set(key, value);
    }

    @Override
    public void add(String key, Object value, int milliseconds) {
        cachedClient.set(key, value, milliseconds);
    }

    @Override
    public void remove(String key) {
        cachedClient.delete(key);
    }

    @Override
    public void remove(String key, int milliseconds) {
        cachedClient.delete(key, milliseconds, new Date());
    }

    @Override
    public void update(String key, Object value, int milliseconds) {
        cachedClient.replace(key, value, milliseconds);
    }

    @Override
    public void update(String key, Object value) {
        cachedClient.replace(key, value);
    }


    @Override
    public Object get(String key) {
        return cachedClient.get(key);
    }

}

Spy方式调用如下:

 

public class MemcacheManagerForSpy implements IMemcacheManager {


    //缓存客户端
    private MemcachedClient memcacheCient;
    //Manager管理对象，单例模式
    private static MemcacheManagerForSpy INSTANCE = new MemcacheManagerForSpy();

    private MemcacheManagerForSpy() {
        try {
                memcacheCient = new MemcachedClient(new InetSocketAddress("127.0.0.1",11211));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static MemcacheManagerForSpy getInstance() {
        return INSTANCE;
    }

    @Override
    public void add(String key, Object value, int milliseconds) {
        memcacheCient.add(key, milliseconds, value);
    }

    @Override
    public void add(String key, Object value) {
        memcacheCient.add(key, 3600, value);

    }

    @Override
    public void remove(String key, int milliseconds) {
        memcacheCient.delete(key);
    }

    @Override
    public void remove(String key) {
        memcacheCient.delete(key);
    }

    @Override
    public void update(String key, Object value, int milliseconds) {
        memcacheCient.replace(key, milliseconds, value);
    }

    @Override
    public void update(String key, Object value) {
        memcacheCient.replace(key, 3600, value);
    }

    @Override
    public Object get(String key) {
        return  memcacheCient.get(key);
    }
}