JAVA客户端调用memcached

RoyPayne — Fri, 30 Dec 2011 01:51:00 GMT

1.memcached client for java客户端API�Q�memcached client for java
�|�址�Q�http://www.whalin.com/memcached
最新版本：java_memcached-release_2.0.1

操作�C�Z��Q?br />

import com.danga.MemCached.*;
import org.apache.log4j.*;
public class TestMemcached {
    public static void main(String[] args) {
        /*初始化SockIOPool�Q�管理memcached的连接池*/
        String[] servers = { "192.168.1.20:12111" };
        SockIOPool pool = SockIOPool.getInstance();
        pool.setServers(servers);
        pool.setFailover(true);
        pool.setInitConn(10);
        pool.setMinConn(5);
        pool.setMaxConn(250);
        pool.setMaintSleep(30);
        pool.setNagle(false);
        pool.setSocketTO(3000);
        pool.setAliveCheck(true);
        pool.initialize();
        /*建立MemcachedClient实例*/
        MemCachedClient memCachedClient = new MemCachedClient();
        for (int i = 0; i < 10; i++) {
            /*��对象加入到memcached�~�存*/
            boolean success = memCachedClient.set("" + i, "Hello!");
            /*从memcached�~�存中按key值取对象*/
            String result = (String) memCachedClient.get("" + i);
            System.out.println(String.format("set( %d ): %s", i, success));
            System.out.println(String.format("get( %d ): %s", i, result));
        }
    }
}

2.spymemcached客户端API�Q�spymemcached client
�|�址�Q�http://code.google.com/p/spymemcached/
最新版本：memcached-2.1.jar

操作�C�Z��Q?nbsp;
用spymemcached��对象存入缓�?nbsp;

import java.net.InetSocketAddress;
import java.util.concurrent.Future;

import net.spy.memcached.MemcachedClient;

public class MClient {

    public static void main(String[] args){
        try{
            /*建立MemcachedClient 实例�Q��ƈ指定memcached服务的IP地址和端口号*/
            MemcachedClient mc = new MemcachedClient(new InetSocketAddress("192.168.1.20", 12111));
            Future b = null;
            /*��key��|��q�期旉��(�U?和要�~�存的对象set到memcached�?/span>*/
            b = mc.set("neea:testDaF:ksIdno", 900, "someObject");
            if(b.get().booleanValue()==true){
                mc.shutdown();
            }
        }
        catch(Exception ex){
            ex.printStackTrace();
        }
    }
}

用spymemcached从缓存中取得对象

import java.net.InetSocketAddress;
import java.util.concurrent.Future;

import net.spy.memcached.MemcachedClient;

public class MClient {

    public static void main(String[] args){
        try{
            /*建立MemcachedClient 实例�Q��ƈ指定memcached服务的IP地址和端口号*/
            MemcachedClient mc = new MemcachedClient(new InetSocketAddress("192.168.1.20", 12111));
            /*按照key��g��memcached中查扄��存，不存在则�q�回null */
Object b = mc.get("neea:testDaF:ksIdno ");
            mc.shutdown();
        }
        catch(Exception ex){
            ex.printStackTrace();
        }
    }
}

3.两种API比较
memcached client for java�Q�较早推出的memcached JAVA客户端API�Q�应用广泛，�q�行比较�E�_��?nbsp;
spymemcached�Q�A simple, asynchronous, single-threaded memcached client written in java. 支持异步�Q�单�U�程的memcached客户端，用到了java1.5版本的concurrent和nio�Q�存取速度会高于前者，但是�E�_��性不好，��试中常报timeOut�{�相兛_��常�?nbsp;
�׃��memcached client for java发布了新版本�Q�性能上有所提高�Q��ƈ且运行稳定，所以徏议��用memcached client for java�?nbsp;

可以参考一下xmemcached�Q�这个是��Z��NIO的模型，性能应该不错�Q?/span>
http://code.google.com/p/xmemcached/

RoyPayne 2011-12-30 09:51 发表评论

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JAVA客户端调用memcached