hibernate4 配合分布式缓存memcache的痛苦配置

hibernate最强大的莫过于缓存功能，配上分布式的memcache应该性能飞快，结果各种麻烦

基本配置网上都有，就不说了

hibernate3缓存的配置

<prop key="hibernate.cache.provider_class">com.googlecode.hibernate.memcached.MemcachedCacheProvider</prop>

这种方式只能应用与hibernate3

这种是hibernate4

hibernate.cache.region.factory_class=com.googlecode.hibernate.memcached.MemcachedRegionFactory

而这个class只有在hibernate-memcache 1.5的版本才有，这个版本是专门给hibernate4使用的，如果你使用了1.6版本反而不支持了，1.5版本的jar包我没找到，直接下载源码导入项目吧，https://github.com/dzone/hibernate-memcached

我没有打成jar包，直接把代码引入到项目了，然后就是各种红色提示错误

首先是com.danga.MemCached.MemCachedClient提示找不到，找这个包我也找了半天，也不知道谁写的，如果没需求其实可以直接删了，无非就是一个memcache的客户端，我一直都是用的spy

这是maven配置

        <dependency>
            <groupId>com.danga</groupId>
            <artifactId>java-memcached</artifactId>
            <version>2.6.3</version>
        </dependency>

这个完事了就是spy的客户端，又是各种恶心，开始用的spymemcache2.8版本的，然后项目里各种问题，而且总是提示HashAlgorithm.NATIVE_HASH 这个属性找不到，我想可能版本太高了吧，换成了2.6的，又是各种问题，最后终于发现只有2.7的才能保证使用

        <dependency>
            <groupId>spy</groupId>
            <artifactId>spymemcached</artifactId>
            <version>2.7</version>
        </dependency>

注意，我没有使用hibernate4.3.0 final，这个版本和spring3.2.5有冲突，各种解决不了，换成了hibernate4.2

我所有的maven配置

<dependency>
            <groupId>org.springframework</groupId>
            <artifactId>org.springframework.core</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>org.springframework.context</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>org.springframework.expression</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>20030825.184428</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>org.springframework.test</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.2.0.Final</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.25</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-annotations</artifactId>
            <version>3.5.6-Final</version>
        </dependency>

        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>20030825.183949</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>org.springframework.orm</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>com.danga</groupId>
            <artifactId>java-memcached</artifactId>
            <version>2.6.3</version>
        </dependency>

        <dependency>
            <groupId>spy</groupId>
            <artifactId>spymemcached</artifactId>
            <version>2.7</version>
        </dependency>

        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>20040616</version>
        </dependency>

最后启动测试，终于看见了这个日志信息，真不容易

12 [main] INFO com.googlecode.hibernate.memcached.MemcachedCacheProvider - Starting MemcachedClient...
2014-03-25 15:32:36.407 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/192.168.70.12:11217, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue
2014-03-25 15:32:36.411 INFO net.spy.memcached.MemcachedConnection: Connection state changed for sun.nio.ch.SelectionKeyImpl@34d4dd8a

来源：oschina

链接：https://my.oschina.net/u/943305/blog/212402

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分布式缓存