今天在这里了记录一下学习ehcache分布式集群的过程。
ehcache的三种最为经常使用集群方式,分别是 RMI、JGroups 以及 EhCache Server 。
这里主要讲一下rmi方式。java
<dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> <version>2.10.3</version> </dependency>
spring.xml:spring
<?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:bootstrap
<?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 一、peerDiscovery,提供者方式,有两种方式:自动发现(automatic)、手动配置(manual) 二、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 一、hostName 主机地址 二、port 端口 三、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 操做是否异步,默认值为true. replicatePuts 添加操做是否同步到集群内的其余缓存,默认为true. replicateUpdates 更新操做是否同步到集群内的其余缓存,默认为true. replicateUpdatesViaCopy 更新以后的对象是否复制到集群中的其余缓存(true); replicateRemovals 删除操做是否同步到集群内的其余缓存,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能够了缓存
这里是随便写个查询和写入缓存的方法服务器
@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异步
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:socket
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){ } } }
这里先启动test1,等它把数据都写到缓存后,启动test2。能够看到test2启动后可以读取到test1的缓存, 而且以后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。分布式