http://jehiah.cz/projects/memcached-win32/files/memcached-1.2.1-win32.zip
这个用讯雷可以下载下来!
package org.rui.mem; import com.danga.MemCached.MemCachedClient; import com.danga.MemCached.SockIOPool; public class MemcachedUtil { /** * memcached客户端单例 */ private static MemCachedClient cachedClient = new MemCachedClient(); /** * 初始化连接池 */ static { //获取连接池的实例 SockIOPool pool = SockIOPool.getInstance(); //服务器列表及其权重 String[] servers = {"127.0.0.1:11211"}; Integer[] weights = {3}; //设置服务器信息 pool.setServers(servers); pool.setWeights(weights); //设置初始连接数、最小连接数、最大连接数、最大处理时间 pool.setInitConn(10); pool.setMinConn(10); pool.setMaxConn(1000); pool.setMaxIdle(1000*60*60); //设置连接池守护线程的睡眠时间 pool.setMaintSleep(60); //设置TCP参数,连接超时 pool.setNagle(false); pool.setSocketTO(60); pool.setSocketConnectTO(0); //初始化并启动连接池 pool.initialize(); //压缩设置,超过指定大小的都压缩 // cachedClient.setCompressEnable(true); // cachedClient.setCompressThreshold(1024*1024); } private MemcachedUtil(){ } public static boolean add(String key, Object value) { return cachedClient.add(key, value); } public static boolean add(String key, Object value, Integer expire) { return cachedClient.add(key, value, expire); } public static boolean put(String key, Object value) { return cachedClient.set(key, value); } public static boolean put(String key, Object value, Integer expire) { return cachedClient.set(key, value, expire); } public static boolean replace(String key, Object value) { return cachedClient.replace(key, value); } public static boolean replace(String key, Object value, Integer expire) { return cachedClient.replace(key, value, expire); } public static Object get(String key) { return cachedClient.get(key); } }
package org.rui.mem; import java.io.Serializable; public class UserBean implements Serializable { private static final long serialVersionUID = 9174194101246733501L; private String username; private String password; public UserBean(String username, String password) { this.username = username; this.password = password; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((password == null) ? 0 : password.hashCode()); result = prime * result + ((username == null) ? 0 : username.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; UserBean other = (UserBean) obj; if (password == null) { if (other.password != null) return false; } else if (!password.equals(other.password)) return false; if (username == null) { if (other.username != null) return false; } else if (!username.equals(other.username)) return false; return true; } @Override public String toString() { return "username:" + username + ",password:" + password; } }
package org.rui.mem; import org.junit.Assert; import org.junit.Test; public class MemcachedUtilTest { @Test public void testMemcached() { MemcachedUtil.put("hello", "world", 60); String hello = (String) MemcachedUtil.get("hello"); // System.out.println(hello); Assert.assertEquals("world", hello); for(int i = 0; i < 100; ++i) { UserBean userBean = new UserBean("code-" + i, "pass-" + i); MemcachedUtil.put("token-" + i, userBean, 60); Object obj = MemcachedUtil.get("token-" + i); Assert.assertEquals(userBean, obj); } } }
目录<a target="_blank" " title="系统根据文章中H1到H6标签自动生成文章目录" style="color:rgb(51,102,153); text-decoration:none">(?)[-]
针对Memcached官方网站提供的java_memcached-release_2.0.1版本进行阅读分析,Memcached Java客户端lib库主要提供的调用类是SockIOPool和MemCachedClient?,关键类及方法整理说明如下。
这个类用来创建管理客户端和服务器通讯连接池,客户端主要的工作包括数据通讯、服务器定位、hash码生成等都是由这个类完成的。
for ( int i = 0; i < servers.length; i+/+ ) { if ( this.weights /!= null && this.weights.length > i ) { for ( int k = 0; k < this.weights[i].intValue(); k+/+ ) { this.buckets.add( servers[i] ); if ( log.isDebugEnabled() ) log.debug( "++++ added " + servers[i] + " to server bucket" ); } }
有些应用情况下,需要遍历memcached服务器中所有被cache的数据,目前memcached client API不支持遍历操作,需要进行扩展。
当memcached被用作session服务器的时候,需要支持session的access方法,根据最近访问时间刷新过期时间,目前memcached也不支持该操作,需要进行扩展。
原文地址:http://blog.csdn.net/liangrui1988/article/details/41788377