environment « Cache « JPA Q&A





1. Why does Hibernate attempt to "cache" and how does this work in a clustered environment?    stackoverflow.com

Say you have a 4-node J2EE application server cluster, all running instances of a Hibernate application. How does caching work in this situation? Does it do any good at all? Should ...

3. Easy to use 2nd leven cache for clustered environments?    forum.hibernate.org

Hi, Is there an easy-to-use, open-source 2nd level cache for hibernate which works well in clustered environments? Scalability is no real concern, the cluster only consists of two machines - but its not possible to run server-processes like terracotta or a memcache-daemon. The three alternatives I know are: - EHCache (requires a teracotta-server running) - Memcached (requires a memcache-server) - SwarmCache ...

4. L2 cache in clustered environment    forum.hibernate.org

I am trying to make two hibernate-enabled clustered web apps to share the same L2 cache (Tangosol Coherence). After webApp1 stored the object1 into the cache the webApp2 does not recognize it and stores into the cache another instance of the object when a new instance of the object is created by webApp2 instead of using the object1 instance that is ...

5. Need Help with Caching in Hibernate in Clustered Environment    forum.hibernate.org

Hi, I think that data stored in Hibernate session is only visible within same VM by default. If you want to have shared cache, you'll need to get something like Tangosol Coherence and configure Hibernate to use that. Otherwise data loaded into session in cluster A will be separate from data loaded into session in cluster B. If you need to ...

6. Clustered environment and second level cache    forum.hibernate.org

A lot of people use second level cache to improve the performance of application running in a clustered environment. Does the second level cache serve only the performance purpose? Is it relevant to versioning? For example, if two users are updating one record in the database at the same time in different JVMs, without using the second cache, does Hibernate know ...