JAVA客户端调用memcached

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：

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++) {
			/*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.google.com/p/spymemcached/
最新版本：memcached-2.1.jar

操作示例：
用spymemcached将对象存入缓存

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，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，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比较
memcached client for java：较早推出的memcached JAVA客户端API，应用广泛，运行比较稳定。
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，但是稳定性不好，测试中常报timeOut等相关异常。
由于memcached client for java发布了新版本，性能上有所提高，并且运行稳定，所以建议使用memcached client for java。

评论

2 楼 lveyo 2010-06-17  

skzr.org 写道

Hi，选定了第一个作为client

可以参考一下xmemcached，这个是基于NIO的模型，性能应该不错！
http://code.google.com/p/xmemcached/

1 楼 skzr.org 2010-06-17  

Hi，选定了第一个作为client