Spring集成Memcache实例

一、Memcache安装
下载地址：https://github.com/memcached/memcached/releases
官方wiki：https://github.com/memcached/memcached/wiki

启动参数：
-p 监听的端口
-l 连接的IP地址, 默认是本机
-d start 启动memcached服务
-d restart 重起memcached服务
-d stop|shutdown 关闭正在运行的memcached服务
-d install 安装memcached服务
-d uninstall 卸载memcached服务
-u 以的身份运行 (仅在以root运行的时候有效)
-m 最大内存使用，单位MB。默认64MB
-M 内存耗尽时返回错误，而不是删除项
-c 最大同时连接数，默认是1024
-f 块大小增长因子，默认是1.25
-n 最小分配空间，key+value+flags默认是48
-h 显示帮助

二、pom文件

1 <!-- memcache -->
2 <dependency>
3     <groupId>com.whalin</groupId>
4     <artifactId>Memcached-Java-Client</artifactId>
5     <version>3.0.2</version>
6 </dependency>

三、配置文件

memcache.properties 文件

 1 #设置服务器地址.该端口号默认为11211
 2 memcached.server=192.168.208.131:11211
 3 #容错
 4 memcached.failOver=true
 5 #设置初始连接数
 6 memcached.initConn=20
 7 #设置最小连接数
 8 memcached.minConn=10
 9 #设置最大连接数
10 memcached.maxConn=250
11 #设置连接池维护线程的睡眠时间
12 memcached.maintSleep=3000
13 #设置是否使用Nagle算法（Socket的参数），如果是true在写数据时不缓冲，立即发送出去
14 memcached.nagle=false
15 #设置socket的读取等待超时时间
16 memcached.socketTO=3000
17 #设置连接心跳监测开关
18 memcached.aliveCheck=true

memcache.xml 文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 4     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 5     xsi:schemaLocation="http://www.springframework.org/schema/beans
 6     http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 7     http://www.springframework.org/schema/context
 8     http://www.springframework.org/schema/context/spring-context-2.5.xsd
 9     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
10     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
11
12     <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
13         <property name="locations">
14             <list>
15                 <value>classpath:memcache.properties</value>
16             </list>
17         </property>
18     </bean>
19     <!-- Memcached配置 -->
20     <bean id="memcachedPool" class="com.whalin.MemCached.SockIOPool"
21         factory-method="getInstance" init-method="initialize" destroy-method="shutDown">
22         <constructor-arg>
23              <value>memCachedPool</value>
24         </constructor-arg>
25         <property name="servers">
26             <list>
27                 <value>${memcached.server}</value>
28             </list>
29         </property>
30         <property name="initConn">
31             <value>${memcached.initConn}</value>
32         </property>
33         <property name="minConn">
34             <value>${memcached.minConn}</value>
35         </property>
36         <property name="maxConn">
37             <value>${memcached.maxConn}</value>
38         </property>
39         <property name="maintSleep">
40             <value>${memcached.maintSleep}</value>
41         </property>
42         <property name="nagle">
43             <value>${memcached.nagle}</value>
44         </property>
45         <property name="socketTO">
46             <value>${memcached.socketTO}</value>
47         </property>
48     </bean>
49
50     <bean id="memCachedClient" class="com.whalin.MemCached.MemCachedClient">
51         <constructor-arg>
52             <value>memCachedPool</value>
53         </constructor-arg>
54     </bean>
55 </beans>

SockIOPool、MemCachedClient构造器参数poolName需要保持一直，否则会报 attempting to get SockIO from uninitialized pool!

四、测试用例

 1 /**
 2  * Mecached测试类
 3  *
 4  */
 5 @RunWith(SpringJUnit4ClassRunner.class)
 6 @ContextConfiguration(locations = "classpath:application.xml")
 7 public class MemcacheTest {
 8
 9   @Autowired
10   private MemCachedClient memCachedClient;
11
12   @Test
13   public void memCachedGetTest() {
14     memCachedClient.set("hello", "123", new Date(System.currentTimeMillis() + 10000L));
15
16     System.out.println("hello: " + memCachedClient.get("hello"));
17
18     try {
19       Thread.sleep(11000);
20     } catch (Exception e) {}
21     Assert.assertNull(memCachedClient.get("hello"));
22
23   }
24 }