问题
What is the name of the default cache used by Hibernate? Is there a default cache even, or do you have to add a cache provider in order to take advantage of a cache?
I thought it was the EHCache but I think this has to be configured...it is not "there" by default...
回答1:
Hibernate already provides a caching mechanisms called 1st level cache by the persistent context . It is in the Session scoped , enabled by default and cannot be turned off.
The cache provider such as EHCache provides another caching mechanisms called 2nd level cache . It is in the SessionFactory scoped . No 2nd level cache is enable by default and you have to configure it .
See this for how to enable EHCache in hibernate.
回答2:
No second level cache is enabled in hibernate by default.
You can always choose one of these cache providers according to your needs:
- EHCache
- OSCache
- SwarmCache
- Jboss TreeCache
- JBoss Cache 2
You can always refer to hibernate documentation to see how to register it.
来源：https://stackoverflow.com/questions/7349530/default-cache-used-by-hibernate