hibernate4 配合分佈式緩存memcache的痛苦配置

hibernate最強大的莫過於緩存功能，配上分佈式的memcache應該性能飛快，結果各類麻煩

基本配置網上都有，就不說了

hibernate3緩存的配置

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

這種方式只能應用與hibernate3

這種是hibernate4

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

而這個class只有在hibernate-memcache 1.5的版本纔有，這個版本是專門給hibernate4使用的，若是你使用了1.6版本反而不支持了，1.5版本的jar包我沒找到，直接下載源碼導入項目吧，https://github.com/dzone/hibernate-memcached

我沒有打成jar包，直接把代碼引入到項目了，而後就是各類紅色提示錯誤

首先是com.danga.MemCached.MemCachedClient提示找不到，找這個包我也找了半天，也不知道誰寫的，若是沒需求其實能夠直接刪了，無非就是一個memcache的客戶端，我一直都是用的spy

這是maven配置

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

這個完事了就是spy的客戶端，又是各類噁心，開始用的spymemcache2.8版本的，而後項目裏各類問題，並且老是提示HashAlgorithm.NATIVE_HASH 這個屬性找不到，我想可能版本過高了吧，換成了2.6的，又是各類問題，最後終於發現只有2.7的才能保證使用

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

注意，我沒有使用hibernate4.3.0 final，這個版本和spring3.2.5有衝突，各類解決不了，換成了hibernate4.2

我全部的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>

最後啓動測試，終於看見了這個日誌信息，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 queue2014-03-25 15:32:36.411 INFO net.spy.memcached.MemcachedConnection:  Connection state changed for sun.nio.ch.SelectionKeyImpl@34d4dd8a