分布式ehcache缓存

今天在这里了记录一下学习ehcache分布式集群的过程。
ehcache的三种最为常用集群方式,分别是 RMI、JGroups 以及 EhCache Server 。
这里主要讲一下rmi方式。

1、添加依赖

<dependency>
  <groupId>net.sf.ehcache</groupId>
  <artifactId>ehcache</artifactId>
  <version>2.10.3</version>
</dependency>

2、配置文件

spring.xml:

<?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:context="http://www.springframework.org/schema/context"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">

    <!-- 自动扫描注解的bean -->
    <context:component-scan base-package="com.yitop.feng" />

    <!-- 启用缓存注解功能(请将其配置在Spring主配置文件中) -->
    <cache:annotation-driven cache-manager="cacheManager" />

    <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
        <property name="cacheManager" ref="ehcache"></property>
    </bean>

    <bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
        <property name="configLocation" value="classpath:ehcache.xml"></property>
    </bean>

</beans>

server1的ehcache.xml:

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="ehcache.xsd">

    <!--
    配置提供者
        1、peerDiscovery,提供者方式,有两种方式:自动发现(automatic)、手动配置(manual)
        2、rmiUrls,手动方式时提供者的地址,多个的话用|隔开
    -->
    <cacheManagerPeerProviderFactory
            class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
            properties="peerDiscovery=manual,rmiUrls=//192.168.30.51:40002/cachetest"
    />

    <!--
    配置监听器
        1、hostName 主机地址
        2、port 端口
        3、socketTimeoutMillis socket子模块的超时时间,默认是2000ms
    -->
    <cacheManagerPeerListenerFactory
            class="net.sf.ehcache.distribution.RMICacheManagerPeerListenerFactory"
            properties="hostName=192.168.30.51, port=40001, socketTimeoutMillis=2000"
    />

    <!-- 默认缓存 -->
    <defaultCache
            maxEntriesLocalHeap="10000"
            eternal="false"
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            maxEntriesLocalDisk="10000000"
            diskExpiryThreadIntervalSeconds="120"
            memoryStoreEvictionPolicy="LRU"/>


    <!-- cachetest缓存 缓存时间为5秒 -->
    <cache name="cachetest"
           maxElementsInMemory="1000"
           eternal="false"
           timeToIdleSeconds="300"
           timeToLiveSeconds="300"
           overflowToDisk="false"
           memoryStoreEvictionPolicy="LRU">

        <!--
        配置缓存事件监听器
            replicateAsynchronously  操作是否异步,默认值为true.
            replicatePuts 添加操作是否同步到集群内的其他缓存,默认为true.
            replicateUpdates 更新操作是否同步到集群内的其他缓存,默认为true.
            replicateUpdatesViaCopy 更新之后的对象是否复制到集群中的其他缓存(true);
            replicateRemovals 删除操作是否同步到集群内的其他缓存,默认为true.
        -->
        <cacheEventListenerFactory
                class="net.sf.ehcache.distribution.RMICacheReplicatorFactory"
                properties="
                replicateAsynchronously=true,
                replicatePuts=true,
                replicateUpdates=true,
                replicateUpdatesViaCopy=true,
                replicateRemovals=true "/>

        <!-- 初始化缓存,以及自动设置-->
        <bootstrapCacheLoaderFactory class="net.sf.ehcache.distribution.RMIBootstrapCacheLoaderFactory"/>
    </cache>

</ehcache>

server2的ehcache.xml只要把提供者和监听者的端口调换就可以了

3、测试

这里是随便写个查询和写入缓存的方法

@CachePut(value = "cachetest", key = "#key")
public String put(String key, String value) {
    System.out.println("保存数据, " + key + " : " + value);
    
    return value;
}

@Cacheable(value = "cachetest", key = "#name")
public String getName(String name) {
    return String.valueOf(System.currentTimeMillis());
}

下面是两个测试类,模拟两台服务器
test1

package com.yitop.feng;

  import com.yitop.feng.service.EhcacheTestService;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.test.context.ContextConfiguration;
  import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

  import java.util.Scanner;

  /**
   * @author fengzp
   * @date 17/3/1下午2:19
   * @email fengzp@gzyitop.com
   * @company 广州易站通计算机科技有限公司
   */
  @RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration(locations = {"classpath:spring.xml"})
  public class EhcacheTest {

      @Autowired
      private EhcacheTestService ehcacheTestService;

      @Test
      public void test() throws InterruptedException {
          String name = "feng";

          int i = 1;

          while (true){
              String o = ehcacheTestService.getName(name + i);
              System.out.println(i + " : " + o);
              i++;
              Thread.sleep(1000);
              if(i > 5) i = 1;
          }
      }
  }

test2:

	package com.yitop.feng;

  import com.yitop.feng.service.EhcacheTestService;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.cache.Cache;
  import org.springframework.test.context.ContextConfiguration;
  import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

  import java.util.Scanner;

  /**
   * @author fengzp
   * @date 17/3/1下午2:19
   * @email fengzp@gzyitop.com
   * @company 广州易站通计算机科技有限公司
   */
  @RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration(locations = {"classpath:test2/spring2.xml"})
  public class EhcacheTest2 {

      @Autowired
      private EhcacheTestService ehcacheTestService;

      @Test
      public void test() throws InterruptedException {

          String name = "feng";

          int i = 1;

          while (true){
              String o = ehcacheTestService.getName(name + i);
              System.out.println(i + " : " + o);
              i++;
              if(i > 5){
                  i = 1;
                  break;
              }
          }

          Thread.sleep(5000);

          while (true) {
              ehcacheTestService.put(name + i, i++ + "");
              if(i > 5) break;
          }

          while (true){

          }

      }
  }

4、结果

这里先启动test1,等它把数据都写到缓存后,启动test2。可以看到test2启动后能够读取到test1的缓存, 并且之后test2更新缓存后,test1也能同时更新,说明缓存已经成功集群到两边。

posted @ 2017-03-10 13:50  fengzp  阅读(7290)  评论(0编辑  收藏  举报