第一种 memcached 第二种 spyMemcached 第三种 XMemcached
三者差异与性能比对
com.danga 包下的 memcached 第一种出来的版本很早，资料也比较全。网上也有很多解释以及例子，但如今实际项目使用中几乎不用它，大概是性能与迸发低于后两种。 xmemcached与spymemcached xmemcached比spymemcached有更好的性能表现，在get、set、delete、multi-gets等操作的测试中都远远超过或者接近spymemcached。 xmemcached在win32和linux两个平台上都有极佳的性能表现。 xmemcached支持动态地添加或者移除memcached server,可以通过编程或者JMX来做到。 xmemcached支持JMX，可以通过jmx调整性能参数、添加/移除memcached节点、查看统计。 xmemcached有客户端统计，可以统计xmemcached客户端的各种操作的总次数。 xmemcached允许调整更多的网络层参数和优化选项。 xmemcached暂未支持二进制协议，计划在1.2版本中实现。 xmemcached的API模型是同步的，而spymemcached的API模型是异步模型，同步模型对应用编程来说更容易使用和直观。 xmemcached的序列化机制，是使用了spymemcached的序列化机制，并做了部分改造。
三者具体使用
第一种
1.配置文件memcached.xml
代码语言：javascript复制 <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="memcachedPool" class="com.danga.MemCached.SockIOPool"
factory-method="getInstance" init-method="initialize">
<constructor-arg>
<value>neeaMemcachedPool</value>
</constructor-arg>
<!-- 服务器连接地址 -->
<property name="servers">
<list>
<value>127.0.0.1:11211</value>
</list>
</property>
<!-- 初始化连接数 -->
<property name="initConn" value="20" />
<!-- 最小连接数 -->
<property name="minConn" value="10" />
<!-- 最大连接数 -->
<property name="maxConn" value="50" />
<!-- 设置tcp连接参数 nagle演算法为false(具体是什么不知道)-->
<property name="nagle" value="false" />
<!-- 连接超时时间 -->
<property name="socketTO" value="3000" />
</bean>
<bean id="memcachedClient" class="com.danga.MemCached.MemCachedClient">
<constructor-arg>
<value>neeaMemcachedPool</value>
</constructor-arg>
</bean>
<!-- 注入自己写的类 -->
<bean id="memcachedUtils" class="com.sss.comm.MemcachedUtils" />
</beans><span style=""> </span> 2.封装的memcached的使用类
代码语言：javascript复制import java.util.Date;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import com.danga.MemCached.MemCachedClient;
public class MemcachedUtils {
protected org.slf4j.Logger logger = LoggerFactory
.getLogger(this.getClass());
@Autowired
private MemCachedClient memcachedClient;
/***
* 添加缓存
*
* @param key
* @param value
* @param expiry
* 超时时间（单位：分钟）
* @throws Exception
*/
public void addCache(String key, Object value, int expiry) throws Exception {
if (StringUtils.isEmpty(key) || value == null) {
throw new IllegalArgumentException("参数错误！");
}
// 时间换成分钟
Date date = new Date();
date.setTime(date.getTime() expiry * 60 * 1000);
boolean isSuc = memcachedClient.set(key, value, date);
if (!isSuc) {
throw new IllegalStateException("缓存存储失败！");
}
}
/***
* 查找
*
* @param key
* 键值
* @return
* @throws Exception
*/
public Object findCache(String key) throws Exception {
if (StringUtils.isEmpty(key)) {
throw new IllegalArgumentException("参数错误！");
}
return memcachedClient.get(key);
}
/***
* 删除
*
* @param key
* 键值
* @throws Exception
*/
public void deleteCache(String key) throws Exception {
if (StringUtils.isEmpty(key)) {
throw new IllegalArgumentException("参数错误！");
}
memcachedClient.delete(key);
}
} 3.使用方式
获取到MemcachedUtils类调用其方法即可。
第二种
1.附上与maven集成的依赖
代码语言：javascript复制<dependency>
<groupId>spy</groupId>
<artifactId>spymemcached</artifactId>
<version>2.8.12</version>
</dependency><span style=""> 2.配置文件 spy-memcached.xml
代码语言：javascript复制 <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="memcachedClient" class="net.spy.memcached.spring.MemcachedClientFactoryBean">
<property name="servers" value="127.0.0.1:11211"/>
<property name="protocol" value="BINARY"/>
<property name="transcoder">
<bean class="net.spy.memcached.transcoders.SerializingTranscoder">
<property name="compressionThreshold" value="1024"/>
</bean>
</property>
<property name="opTimeout" value="1000"/>
<property name="timeoutExceptionThreshold" value="1998"/>
<property name="hashAlg" value="KETAMA_HASH"/>
<property name="locatorType" value="CONSISTENT"/>
<property name="failureMode" value="Redistribute"/>
<property name="useNagleAlgorithm" value="false"/>
</bean>
<!-- 注入自己写的类 -->
<bean id="memcachedUtils" class="com.sss.util.MemcachedUtils" />
</beans> 3.封装的memcached使用类
注：该方式与第一种类似，只是在set方法的时候，传入参数顺序调换。缓存时间需注意，若memcached的服务端装在windows上，可能会出现运行错误。
代码语言：javascript复制import net.spy.memcached.MemcachedClient;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
public class MemcachedUtils {
protected org.slf4j.Logger logger = LoggerFactory
.getLogger(this.getClass());
@Autowired
private MemcachedClient memcachedClient;
/***
* 添加缓存
*
* @param key
* @param value
* @param expiry
* 超时时间（单位：分钟）
* @throws Exception
*/
public void addCache(String key, Object value, int expiry) throws Exception {
if (StringUtils.isEmpty(key) || value == null) {
throw new IllegalArgumentException("参数错误！");
}
//Date date = new Date();
//date.setTime(date.getTime() expiry * 60 * 1000);
memcachedClient.set(key, expiry, value);
}
public Object findCache(String key) throws Exception {
if (StringUtils.isEmpty(key)) {
throw new IllegalArgumentException("参数错误！");
}
return memcachedClient.get(key);
}
public void deleteCache(String key) throws Exception {
if (StringUtils.isEmpty(key)) {
throw new IllegalArgumentException("参数错误！");
}
memcachedClient.delete(key);
}
} 4.使用方式
获取到memcachedUtils类，调用其方法即可
第三种
1.附上与maven集成的依赖
代码语言：javascript复制 <dependency>
<groupId>com.googlecode.xmemcached</groupId>
<artifactId>xmemcached</artifactId>
<version>2.0.0</version>
</dependency> 2.配置文件x-memcached.xml
代码语言：javascript复制 <!-- 注入自己写的类 -->
<bean id="cacheService" class="com.sss.util.XMemcachedClient">
</bean>
<bean name="memcachedClient"
class="net.rubyeye.xmemcached.utils.XMemcachedClientFactoryBean"
destroy-method="shutdown">
<property name="servers">
<value>127.0.0.1:11211</value>
</property>
</bean> 或者
代码语言：javascript复制<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd">
<bean name="memcachedServers" class="java.net.InetSocketAddress"
factory-method="getAddresses">
<constructor-arg value="127.0.0.1:11211" />
</bean>
<bean name="memcachedClientBuilder" class="net.rubyeye.xmemcached.XMemcachedClientBuilder">
<constructor-arg index="0" ref="memcachedServers" />
<property name="connectionPoolSize" value="1"></property>
<property name="commandFactory">
<bean class="net.rubyeye.xmemcached.command.TextCommandFactory"></bean>
</property>
<property name="sessionLocator">
<bean class="net.rubyeye.xmemcached.impl.KetamaMemcachedSessionLocator"></bean>
</property>
<property name="transcoder">
<bean class="net.rubyeye.xmemcached.transcoders.SerializingTranscoder" />
</property>
</bean>
<bean name="memcachedClient" factory-bean="memcachedClientBuilder"
factory-method="build" destroy-method="shutdown" />
<!-- 注入自己写的类 -->
<bean id="cacheService" class="com.sss.util.XMemcachedClient">
</bean>
</beans> 3.封装的memcached使用类
代码语言：javascript复制import net.rubyeye.xmemcached.MemcachedClient;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
public class XMemcachedClient {
protected org.slf4j.Logger logger = LoggerFactory
.getLogger(this.getClass());
@Autowired
private MemcachedClient memcachedClient;
/***
* 添加缓存
*
* @param key
* @param value
* @param expiry
* 超时时间（单位：分钟）
* @throws Exception
*/
public void addCache(String key, Object value, int expiry) throws Exception {
if (StringUtils.isEmpty(key) || value == null) {
throw new IllegalArgumentException("参数错误！");
}
boolean isCache = memcachedClient.add(key, expiry*60, value);
if (!isCache) {
throw new IllegalStateException("缓存存储失败！");
}
}
public Object findCache(String key) throws Exception {
if (StringUtils.isEmpty(key)) {
throw new IllegalArgumentException("参数错误！");
}
return memcachedClient.get(key);
}
public void deleteCache(String key) throws Exception {
if (StringUtils.isEmpty(key)) {
throw new IllegalArgumentException("参数错误！");
}
memcachedClient.delete(key);
}
} 4.使用方式
获取到XMemcached类调用其方法即可。
jar包资源
http://download.csdn.net/detail/u011269546/8221111 http://download.csdn.net/detail/u011269546/8221139 http://download.csdn.net/detail/u011269546/8220099
