JAVA客户端调用memcached比较[Java编程]

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1.memcached client for java

客户端API:memcached client for java

网址:http://www.whalin.com/memcached

最新版本:java_memcached-release_2.0.1

操作示例:

Java代码

import com.danga.MemCached.*;
import org.apache.log4j.*;
public class TestMemcached {
    public static void main(String[] args) {
        /*初始化SockIOPool,管理memcached的衔接池*/
        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();
        /*成立MemcachedClient实例*/
        MemCachedClient memCachedClient = new MemCachedClient();
        for (int i = 0; i < 10; i++) {
            /*将对象加入到memcached缓存*/
            boolean success = memCachedClient.set("" + i, "Hello!");
            /*从memcached缓存中按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:spymemcached client

网址:http://code.谷歌.com/p/spymemcached/

最新版本:memcached-2.1.jar

操作示例:用spymemcached将对象存入缓存

Java代码

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

import net.spy.memcached.MemcachedClient;

public class MClient {

    public static void main(String[] args){
        try{
            /*成立MemcachedClient 实例,并指定memcached服务的IP地址和端口号*/
            MemcachedClient mc = new MemcachedClient(new InetSocketAddress("192.168.1.20", 12111));
            Future<Boolean> b = null;
            /*将key值,过期时间(秒)和要缓存的对象set到memcached中*/
            b = mc.set("neea:testDaF:ksIdno", 900, "someObject");
            if(b.get().booleanValue()==true){
                mc.shutdown();
            }
        }
        catch(Exception ex){
            ex.printStackTrace();
        }
    }
}

用spymemcached从缓存中获得对象

Java代码

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

import net.spy.memcached.MemcachedClient;

public class MClient {

    public static void main(String[] args){
        try{
            /*成立MemcachedClient 实例,并指定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值从memcached中查找缓存,不存在则返回null */
Object b = mc.get("neea:testDaF:ksIdno ");
            mc.shutdown();
        }
        catch(Exception ex){
            ex.printStackTrace();
        }
    }
}

3.两种API对比

memcached client for java:较早推出的memcached JAVA客户端API,利用遍及,运行对比安定.

spymemcached:A simple, asynchronous, single-threaded memcached client written in java. 支持异步,单线程的memcached客户端,用到了java1.5版本的concurrent和nio,存取速度会高于前者,但是安定性不好,测试中常报timeOut等相关非常.

由于memcached client for java公布了新版本,性能上有所提高,并且运行安定,所以倡议利用memcached client for java.

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