java缓存(4、memcached)

概述

       之前学习.net缓存的时候，已经讲过memcached，对于其集群、并发和内存回收等问题，都讲过，这里不再赘述，有兴趣的可以看这篇博客：分布式缓存Memcache和Redis。本篇主要讲解是使用java语言操作memcached。

memcached的demo

        添加第三方jar

                java_memcached-release.jar；commons-pool.jar；slf4j-api.jar；slf4j-simple.jar(demo)

        程序

package com.tgb.testmemcached;

import java.util.Date;

import org.junit.Before;
import org.junit.Test;

import com.danga.MemCached.MemCachedClient;
import com.danga.MemCached.SockIOPool;

public class TestMemcachedClient {
	SockIOPool sockIOPool = SockIOPool.getInstance();
	MemCachedClient memCacheClient = new MemCachedClient();
	
	@Before
	public void init(){	
		String[] servers = {"192.168.24.131:11211"};
		Integer[] weights ={3};
		
		sockIOPool.setServers(servers);
		sockIOPool.setWeights(weights);
		sockIOPool.setInitConn(5);
		sockIOPool.setMinConn(5);
		sockIOPool.setMaxConn(20);
		sockIOPool.setMaxIdle(1000*60*60*6);
		sockIOPool.setMaintSleep(30);
		sockIOPool.setNagle(false);
		sockIOPool.setSocketTO(3000);
		sockIOPool.setSocketConnectTO(0);
		sockIOPool.initialize();
		
//		memCacheClient.setCompressEnable(true);
//		memCacheClient.setCompressThreshold(64*1024);
	}
	
	@Test
	public void testAdd(){
		//将数据放入缓存
		memCacheClient.set("test1", "test1");
		
		//将数据放入缓存，并设置失效时间
		Date date = new Date(2000000);
		memCacheClient.set("test2", "test2",date);
		
		System.out.println("添加成功");
	}
	
	@Test
	public void testGet(){
		String strValue1 = memCacheClient.get("test1").toString();
		String strValue2 = memCacheClient.get("test2").toString();
		System.out.println(strValue1 + "   "  + strValue2);
	}
	
	@Test
	public void testDelete(){
		boolean flag = memCacheClient.delete("test1");
		System.out.println(flag);
		String strValue1 = memCacheClient.get("test1").toString();
		System.out.println(strValue1);
	}
	
	@Test
	public void testAdd2(){
		//不对key做编码
		memCacheClient.setSanitizeKeys(false);
		
		memCacheClient.add("aa@163.com", "青山");
		String strName = memCacheClient.get("aa@163.com").toString();
		System.out.println(strName);
	}
}