ehcache 分布式集群同步数据实例

本文使用rmi方式,借鉴百度能搜到的文章，但是均不能做到数据同步，做了些改动完全没问题，更详细说明介绍百度即可。直奔主题，可运行的demo实例！

创建一个maven项目，配置pom

pom.xml

<dependencies>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.1.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.5.8</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.8</version>
</dependency>

<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-jgroupsreplication</artifactId>
<version>1.7</version>
</dependency>
</dependencies>

服务器A 配置

ehcache.xml

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

<diskStore path="java.io.tmpdir/ehcache" />

<!-- 指定除自身之外的网络群体中其他提供同步的主机列表，多台机器配置 用'|'分割 -->
<cacheManagerPeerProviderFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
properties="peerDiscovery=manual,rmiUrls=//192.168.1.74:4005/demoCache">
</cacheManagerPeerProviderFactory>

<cacheManagerPeerListenerFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerListenerFactory"
properties="hostName=192.168.1.23,port=4005,socketTimeoutMillis=120000" />

<!--
多播方式配置
搜索某个网段上的缓存 timeToLive
0是限制在同一个服务器
1是限制在同一个子网
32是限制在同一个网站
64是限制在同一个region
128是限制在同一个大洲 255是不限制
<cacheManagerPeerProviderFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
properties="peerDiscovery=automatic, multicastGroupAddress=224.1.1.1,
multicastGroupPort=40000, timeToLive=32" /> -->

<!-- 默认缓存 -->
<defaultCache maxElementsInMemory="1000" eternal="true"
timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true"
diskSpoolBufferSizeMB="30" maxElementsOnDisk="10000000"
diskPersistent="true" diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU">
</defaultCache>

<!-- demo缓存 -->
<cache name="demoCache" maxElementsInMemory="1000" eternal="false"
timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true"
diskSpoolBufferSizeMB="30" maxElementsOnDisk="10000000"
diskPersistent="false" diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU">
<cacheEventListenerFactory
class="net.sf.ehcache.distribution.RMICacheReplicatorFactory" />
<!-- 用于在初始化缓存，以及自动设置 -->
<bootstrapCacheLoaderFactory
class="net.sf.ehcache.distribution.RMIBootstrapCacheLoaderFactory" />
</cache>
</ehcache>

测试代码。

Mytest.java

import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Element;

public class Mytest {
public static void main(String[] args) throws InterruptedException {
CacheManager manager = new CacheManager("src/test/resources/ehcache.xml");

//get Cache
Cache cache = manager.getCache("demoCache");
Thread.sleep(10000);
Element element = new Element("key","test");
cache.put(element);

System.out.println("Initial:\n"//+url.toString()
+"\n"+manager.getName()
+"\n"+cache.getName()
+" 's size = "+cache.getSize()
+"\n"+element.toString());

Element element01 = cache.get("key");
System.out.println(element01.getValue());
System.out.println("主机测试等待中.............");

while(true){
Thread.sleep(1000);
}
}
}

服务器B

ehcache.xml

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

<diskStore path="java.io.tmpdir/ehcache" />

<cacheManagerPeerProviderFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
properties="peerDiscovery=manual,rmiUrls=//192.168.1.23:4005/demoCache">
</cacheManagerPeerProviderFactory>

<cacheManagerPeerListenerFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerListenerFactory"
properties="hostName=192.168.1.74,port=4005,socketTimeoutMillis=120000" />

<!--
多播方式配置
搜索某个网段上的缓存 timeToLive
0是限制在同一个服务器
1是限制在同一个子网
32是限制在同一个网站
64是限制在同一个region
128是限制在同一个大洲 255是不限制
<cacheManagerPeerProviderFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
properties="peerDiscovery=automatic, multicastGroupAddress=224.1.1.1,
multicastGroupPort=40000, timeToLive=32" /> -->

<!-- 默认缓存 -->
<defaultCache maxElementsInMemory="1000" eternal="true"
timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true"
diskSpoolBufferSizeMB="30" maxElementsOnDisk="10000000"
diskPersistent="true" diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU">
</defaultCache>

<!-- demo缓存 -->
<cache name="demoCache" maxElementsInMemory="1000" eternal="false"
timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true"
diskSpoolBufferSizeMB="30" maxElementsOnDisk="10000000"
diskPersistent="false" diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU">
<cacheEventListenerFactory
class="net.sf.ehcache.distribution.RMICacheReplicatorFactory" />
<!-- 用于在初始化缓存，以及自动设置 -->
<bootstrapCacheLoaderFactory
class="net.sf.ehcache.distribution.RMIBootstrapCacheLoaderFactory" />
</cache>
</ehcache>

测试代码

MyTest.java

import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Element;

public class Mytest {
public static void main(String[] args) throws InterruptedException {
CacheManager manager = new CacheManager("src/test/resources/ehcache.xml");

//get Cache
Cache cache = manager.getCache("demoCache");
Thread.sleep(10000);

while(true){
System.out.println("搜索中...");
System.out.println("当前资源数：" + cache.getSize());
Element element = cache.get("key");
if (element != null) {
System.out.println(element.getValue());
break;
}
Thread.sleep(1000);
}
}
}

先运行服务器A，在运行服务器B。

效果：

服务器A



服务器B



完成！