Memcached--JAVA接口使用说明

1.下载依赖的JAR包

java_memcached-release_2.6.2.jar

commons-pool-1.5.6.jar

slf4j-api-1.6.1.jar

slf4j-simple-1.6.1.jar

2.JAVA程序

package com.memecached;

import java.util.Date;

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

public class MemcachedExample {
private  static MemCachedClient memCachedClient = new MemCachedClient();

// 设置与缓存服务器的连接池
static {
// 服务器列表和其权重
String[] servers = { "192.168.74.129:11211" };
Integer[] weights = { 3 };

// 获取socke连接池的实例对象
SockIOPool pool = SockIOPool.getInstance();

// 设置服务器信息
pool.setServers(servers);
pool.setWeights(weights);

// 设置初始连接数、最小和最大连接数以及最大处理时间
pool.setInitConn(5);
pool.setMinConn(5);
pool.setMaxConn(250);
pool.setMaxIdle(1000 * 60 * 60 * 6);

// 设置主线程的睡眠时间
pool.setMaintSleep(30);

// 设置TCP的参数，连接超时等
pool.setNagle(false);
pool.setSocketTO(3000);
pool.setSocketConnectTO(0);

// 初始化连接池
pool.initialize();
}

public static void main(String[] args) {
//key或value不能为空,否则不能存入
memCachedClient.set("username", "张三");//添加键值对key=username,value=张三
memCachedClient.set("username2", "张三", new Date(new Date().getTime() + 60*1000));//添加键值对key=username2,value=张三,并且指定有效期60秒
System.out.println("username="+memCachedClient.get("username"));
System.out.println("username2="+memCachedClient.get("username2"));

memCachedClient.replace("username", "李四");//替换键username的值为李四
memCachedClient.replace("username2", "李四", new Date(new Date().getTime() + 60*1000));//替换键username的值为李四,并且指定有效期60秒

memCachedClient.add("username3", "张三");//添加键值对key=username,value=张三,只有当username3不存在时,才会添加
System.out.println("username3="+memCachedClient.get("username3"));

memCachedClient.delete("username3");//删除键值班对
System.out.println("username3="+memCachedClient.get("username3"));

System.out.println("statsItems:"+memCachedClient.statsItems());

System.out.println("statsSlabs:"+memCachedClient.statsSlabs());

}

}

3.JAVA程序运行结果

username=张三
username2=张三
username3=张三
username3=null
statsItems:{192.168.74.129:11211={items:5:evicted_unfetched=3265507
, items:1:evicted_unfetched=0
, items:1:evicted_time=0
, items:1:expired_unfetched=1
, items:5:expired_unfetched=0
, items:1:number=2
, items:5:evicted_time=202
, items:5:evicted=3265507
, items:1:reclaimed=3
, items:1:evicted_nonzero=0
, items:5:tailrepairs=0
, items:1:evicted=0
, items:5:number=1734493
, items:1:tailrepairs=0
, items:1:age=0
, items:5:age=7372
, items:5:reclaimed=0
, items:1:outofmemory=0
, items:5:evicted_nonzero=0
, items:5:outofmemory=0
}}
statsSlabs:{192.168.74.129:11211={5:chunk_size=240
, 2:incr_hits=0
, 2:cas_badval=0
, 5:delete_hits=0
, 1:cas_hits=0
, 5:total_chunks=1734493
, 2:used_chunks=0
, 1:used_chunks=2
, 5:chunks_per_page=4369
, 5:decr_hits=0
, 5:cas_badval=0
, 5:free_chunks_end=0
, 1:free_chunks=10920
, 2:touch_hits=0
, 5:get_hits=1734493
, 2:total_pages=115
, 2:delete_hits=0
, 2:get_hits=1000000
, 2:free_chunks=1004870
, 2:total_chunks=1004870
, 2:free_chunks_end=0
, 1:chunks_per_page=10922
, 5:incr_hits=0
, 1:delete_hits=5
, 1:incr_hits=0
, 2:chunk_size=120
, 5:mem_requested=364243530
, 5:cas_hits=0
, active_slabs=3
, 1:touch_hits=0
, 1:get_hits=25
, 2:cmd_set=1000000
, 1:total_chunks=10922
, 2:decr_hits=0
, 2:chunks_per_page=8738
, 1:decr_hits=0
, 5:total_pages=397
, 2:cas_hits=0
, total_malloced=537911232
, 1:cmd_set=42
, 5:cmd_set=6000000
, 1:chunk_size=96
, 1:cas_badval=0
, 1:total_pages=1
, 2:mem_requested=0
, 1:free_chunks_end=0
, 5:used_chunks=1734493
, 1:mem_requested=161
, 5:free_chunks=0
, 5:touch_hits=0
}}