Specification of Second Level Cache
Hibernate Session is a transaction-level cache of persistent data.Hibernate has the
ability to configure a cluster or JVM-level (SessionFactory-level) cache on a class-by-class
and collection-by-collection basis. we can plug in a clustered cache. We need to aware that
caches are not having change mode to the persistent store by another application.
So it can be called to configured to regularly expire cached data.
We have an another option in Hibernate which cache implementation to use by
specifying the name of a class that implements org.hibernate.cache.CacheProvider
using the property hibernate.cache.provider_class. Hibernate is combination of bundled
with a number of own and plug it in as outlined above. we have to remember EhCache as
the default cache provider.
We have given all cache provider in the table:
| Cache |
Provider Class |
Type |
Cluster Safe |
Query Cache Supported |
| Hashtable (not intended for production use) |
org.hibernate.cache.HashtableCacheProvider |
memory |
|
Yes |
| EHCache |
org.hibernate.cache.EhCacheProvider |
memory, disk |
|
Yes |
| OSCache |
org.hibernate.cache.OSCacheProvider |
memory, disk |
Yes |
|
| SwarmCache |
org.hibernate.cache.SwarmCacheProvider |
clustered (ip multicast) |
yes (clustered invalidation) |
|
| JBoss Cache 1.x |
org.hibernate.cache.TreeCacheProvider |
clustered (ip multicast |
transactional yes (replication) |
yes (clock sync req.) |
| JBoss Cache 2 |
org.hibernate.cache.jbc2.JBossCacheRegionFactory |
clustered (ip multicast) |
transactional yes (replication or invalidation) |
yes (clock sync req.) |
