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This article will explain in detail how to use Hibernate 3 L2 cache, Xiaobian thinks it is quite practical, so share it with you as a reference, I hope you can gain something after reading this article.

1. Hibernate3's L2 cache, like session-level cache, only caches entity objects, not attribute-level queries; the L2 cache's life cycle is the same as sessionFactory's life cycle, sessionFactory can manage L2 cache;

2. SessionFactory level cache, need to be manually configured; all sessions can share sessionFactory level cache;(generally put some infrequently changing entity objects into sessionFactory level cache, suitable for putting infrequently changing entity objects).

3.Hiberante3 L2 cache configuration and usage methods are as follows:

You must import the ehcache.jar package, and then copy ehcache.xml to the project src directory under Hibernate3.2 etc file (there are detailed English instructions in the parameters in ehcache.xml);

Description: ehcache.jar is a third-party cache product, hiberante only integrates it, and there are many third-party hibernate integrated cache products, please refer to hiberante3 development manual for relevant instructions;ehcache does not support distributed applications, if there are distributed requirements, please switch to support distributed secondary cache products, hiberate3 development manual has phase header instructions. The configuration methods are similar);

4. Hibernate3's L2 cache is on by default, or you can specify on. Configure the following in hibernate.cfg.xml:

* Modify hibernate.cfg.xml file to open secondary cache;

true

* Specify the provider of the secondary cache product;

org.hibernate.cache.EhCacheProvider

For those entities to use the L2 cache, add to the hibernate.cfg.xml configuration file:

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