如何在hibernate-memcached中創建客戶端

Question

在hibernate.cfg.xml中定義所有memcached屬性后，如何在我的代碼中創建memcachedclient？

hibernate.cfg.xml中： -

<property name="hibernate.cache.provider_class">com.googlecode.hibernate.memcached.MemcachedCacheProvider</property>
        <property name="hibernate.cache.use_second_level_cache">true</property>
        <property name="hibernate.cache.use_query_cache">false</property>
        <property name="hibernate.cache.use_minimal_puts">true</property>
        <property name="hibernate.cache.region_prefix">MemcachedCache</property>
        <property name="hibernate.memcached.memcacheClientFactory">com.googlecode.hibernate.memcached.dangamemcached.DangaMemcacheClientFactory</property>      
        <property name="hibernate.Memcached.servers"> 10.2.200.114:11211 </property>
        <property name="hibernate.Memcached.cacheTimeSeconds">300</property>
        <property name="hibernate.Memcached.connectionFactory">KetamaConnectionFactory</property>  
        <property name="hibernate.memcached.keyStrategy">HashCodeKeyStrategy</property>
        <property name="hibernate.memcached.readBufferSize">DefaultConnectionFactory.DEFAULT_READ_BUFFER_SIZE</property>
        <property name="hibernate.memcached.operationQueueLength">DefaultConnectionFactory.DEFAULT_OP_QUEUE_LEN</property>
        <property name="hibernate.memcached.operationTimeout">DefaultConnectionFactory.DEFAULT_OPERATION_TIMEOUT</property>
        <property name="hibernate.memcached.hashAlgorithm">HashAlgorithm.KETAMA_HASH</property>
        <property name="hibernate.memcached.clearSupported">false</property>

就像這樣的方式

MemcachedClient client = new MemcachedClient(new KetamaConnectionFactory(), AddrUtil.getAddresses("10.2.200.114:11211"));

如果沒有，如果我必須使用hibernate.cfg.xml中定義的屬性，那我該怎么辦？

Answer 1

我知道這是一個老問題，但無論如何我都會回答，因為我有完全相同的問題。

如果您使用Spring，那么您可以將其作為bean連接。

這是我的持久性配置的一部分：

<property name="hibernate.cache.provider_class" value="com.googlecode.hibernate.memcached.MemcachedCacheProvider" />
<property name="hibernate.cache.use_second_level_cache" value="true" />
<property name="hibernate.cache.use_structured_entries" value="true" />
<property name="hibernate.memcached.cacheTimeSeconds" value="300" />
<property name="hibernate.memcached.connectionFactory" value="BinaryConnectionFactory" />

這是相關的Spring配置：

<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
        <property name="persistenceUnitName" value="persistenceUnit"/>
        <property name="dataSource" ref="dataSource"/>
        <property name="jpaPropertyMap">
            <map>
                <entry key="hibernate.memcached.servers" value="${MEMCACHIER_SERVERS}" />
                <entry key="hibernate.memcached.username" value="${MEMCACHIER_USERNAME}" />
                <entry key="hibernate.memcached.password" value="${MEMCACHIER_PASSWORD}" />
            </map>
        </property>
    </bean>

    <bean id="plainCallbackHandler" class="net.spy.memcached.auth.PlainCallbackHandler">
        <constructor-arg index="0" value="${MEMCACHIER_USERNAME}"/>
        <constructor-arg index="1" value="${MEMCACHIER_PASSWORD}"/>
    </bean>
    <bean id="authDescriptor" class="net.spy.memcached.auth.AuthDescriptor">
        <constructor-arg index="0">
            <array><value>PLAIN</value></array>
        </constructor-arg>
        <constructor-arg index="1" ref="plainCallbackHandler"/>
    </bean>
    <bean id="memcachedClient" class="net.spy.memcached.spring.MemcachedClientFactoryBean">
        <property name="servers" value="${MEMCACHIER_SERVERS}"/>
        <property name="protocol" value="BINARY"/>
        <property name="authDescriptor" ref="authDescriptor"/>
    </bean>

當然，您可以隨意使用它：

@Inject
private MemcachedClient memcachedClient;

我使用了hibernate-memcached的 1.3版本。