ubuntu下安装Memcache

下载memcached : http://danga.com/memcached/dist/memcached-1.4.3.tar.gz

下载libevent:         http://www.monkey.org/~provos/libevent-1.4.13-stable.tar.gz

 

安装libevent:

   # tar zxvf libevent-1.4.13-stable.tar.gz

   #cd libevent-1.4.13-stable

   # ./configure –prefix=/usr

   #make

   #sudo make install

 

安装memcached，安装时指定libevent的安装位置：

     #tar zxvf memcached-1.4.3.tar.gz

     #cd  memcached-1.4.3

     #./configure –with-libevent=/usr

     #make

     #sudo checkinstall 

 

安装完成后就有了/usr/local/bin/memcached

 

 

启动Memcache的服务器端：

# /usr/local/bin/memcached -d -m 10 -u root -l 192.168.0.200 -p 12111 -c 256 -P /tmp/memcached.pid

 

    -d选项是启动一个守护进程，

    -m是分配给Memcache使用的内存数量，单位是MB，我这里是10MB，

    -u是运行Memcache的用户，我这里是root，

    -l是监听的服务器IP地址，如果有多个地址的话，我这里指定了服务器的IP地址192.168.0.200，

    -p是设置Memcache监听的端口，我这里设置了12111，最好是1024以上的端口，

    -c选项是最大运行的并发连接数，默认是1024，我这里设置了256，按照你服务器的负载量来设定，

    -P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid，

 

如果要结束Memcache进程，执行：

 

    # kill `cat /tmp/memcached.pid`

 

也可以启动多个守护进程，不过端口不能重复。

 

-----------------------------------

java客户端测试代码

 

下载java_memcached-release_2.0.1(http://www.whalin.com/memcached)

 

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

public class TestMem {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String[] servers = { "192.168.1.103:12111" };
		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, eagle516");
			/* 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));
		}
	}
}

 

注释boolean success = memCachedClient.set("" + i, "Hello, eagle516");前运行结果:

set( 0 ): true

get( 0 ): Hello, eagle516

set( 1 ): true

get( 1 ): Hello, eagle516

set( 2 ): true

get( 2 ): Hello, eagle516

set( 3 ): true

get( 3 ): Hello, eagle516

set( 4 ): true

get( 4 ): Hello, eagle516

set( 5 ): true

get( 5 ): Hello, eagle516

set( 6 ): true

get( 6 ): Hello, eagle516

set( 7 ): true

get( 7 ): Hello, eagle516

set( 8 ): true

get( 8 ): Hello, eagle516

set( 9 ): true

get( 9 ): Hello, eagle516

 

 

注释boolean success = memCachedClient.set("" + i, "Hello, eagle516");后运行结果:

get( 0 ): Hello, eagle516

get( 1 ): Hello, eagle516

get( 2 ): Hello, eagle516

get( 3 ): Hello, eagle516

get( 4 ): Hello, eagle516

get( 5 ): Hello, eagle516

get( 6 ): Hello, eagle516

get( 7 ): Hello, eagle516

get( 8 ): Hello, eagle516

get( 9 ): Hello, eagle516