memcached的安装(centOS7)

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安装libevent，命令如下

yum install libevent libevent-devel

安装memcached

wget http://memcached.org/latest tar -zxvf latest cd memcached-1.4.24/ ./configure --prefix=/usr/local/memcached make && make install

启动

/usr/local/memcached/bin/memcached -d -u root -m 512 -p 11211

启动参数说明：
-d 选项是启动一个守护进程。
-u root 表示启动memcached的用户为root。
-m 是分配给Memcache使用的内存数量，单位是MB，默认64MB。
-p 是设置Memcache的TCP监听的端口，默认为11211

检查是否启动成功：

pgrep memcachednetstat -tulpn | grep :11211  ps -ef | grep memcached

防火墙设置

firewall-cmd --zone=public --add-port=11211/tcp --permanentfirewall-cmd --zone=public --add-port=11211/udp --permanent firewall-cmd --reload

java客户端测试，使用的是Memcached Java Client API

下载java_memcached-release相关的jar包并引入

测试代码

public class TestMemCached {@Beforepublic void init() {/*初始化SockIOPool，管理memcached的连接池*/          String[] servers = { "192.168.80.11:11211" };          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();}@Testpublic void test() {        /*建立MemcachedClient实例*/          MemCachedClient memCachedClient = new MemCachedClient();          for (int i = 0; i < 3; i++) {              /*将对象加入到memcached缓存*/              boolean success = memCachedClient.set("" + i, "Hello!" + i);              /*从memcached缓存中按key值取对象*/              String result = (String) memCachedClient.get("" + i);              System.out.println("第" + (i + 1) + "条" + (success ? "插入成功！" : "插入失败！"));              System.out.println("获取的值是：" + result);          }  }@Testpublic void testSet() {MemCachedClient memCachedClient = new MemCachedClient();System.out.println(memCachedClient.set("test", "heheda!", new Date(new Date().getTime() + 10000))); // 设置10秒超时 }@Testpublic void testGet() {MemCachedClient memCachedClient = new MemCachedClient();System.out.println(memCachedClient.get("test"));}}

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