我们的项目用途选项3.我们应用注释
org.hibernate.annotations.Cache的实体，我们缓存在了Ehcache，配置了Ehcache使用
ehcache.xml，并启用和配置Hibernate的二级缓存在
hibernate.cfg.xml：
<!-- Enable the second-level cache --> <property name="hibernate.cache.provider_class"> net.sf.ehcache.hibernate.EhCacheProvider </property> <property name="hibernate.cache.region.factory_class"> net.sf.ehcache.hibernate.EhCacheRegionFactory </property> <property name="hibernate.cache.use_query_cache">true</property> <property name="hibernate.cache.use_second_level_cache">true</property> <property name="hibernate.cache.use_structured_entries">true</property> <property name="hibernate.cache.generate_statistics">true</property>
对于大多数实体，我们使用缓存并发策略
CacheConcurrencyStrategy.TRANSACTIONAL：
@Cache(usage = CacheConcurrencyStrategy.TRANSACTIONAL)
我们的Maven项目使用Hibernate 3.3.2GA和Ehcache 2.2.0：
<dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache-core</artifactId> <version>2.2.0</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>3.3.2.GA</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-commons-annotations</artifactId> <version>3.3.0.ga</version> <exclusions> <exclusion> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-annotations</artifactId> <version>3.2.1.ga</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>ejb3-persistence</artifactId> <version>3.3.2.Beta1</version> </dependency>
