Hibernate second level cach

最新推荐文章于 2025-07-28 23:27:29 发布

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#hibernate #properties #cache #include #object #class

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本文详细介绍了Hibernate二级缓存的作用及实现方式，包括提高性能和集群支持的目的，以及EHCache、OSCache和SwarmCache等不同类型的缓存。此外还介绍了配置缓存策略的方法，涉及hibernate.cfg.xml和ehcache.xml文件的设置。

Q: Why hibernate second level cach?

A: Improve performent and cluster.

Q: How many kinds of second level?

A: EHCache, OSCache, SwarmCache.

Q: What can be catch?

A: Properties and Object.

Q: How to implement second level cach?

1. Config in hibernate.cfg.xml:

<property name="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</property>

<property name="transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property> <property name="transaction.manager_lookup_class">org.hibernate.transaction.WeblogicTransactionManagerLookup</property>

(while write cache existed)

2. Edit default or specified cache strategies in ehcache.xml

3. Define cach class(in hibernate.cfg.xml(usage, include) : cache-class, cache-collections(certain object's collection properties), in *.hbm.xml: cach)