I'm using Hibernate 3.5.1, which comes with EHCache 1.5 bundled.

If I want to use the latest EHCache release (2.0.1), is it just a matter of removing the ehcache-1.5.jar from my project, and replacing with ehcache-core-2.0.1.jar? Any issues to be aware of?

Also - is a cache "region" in the Hibernate mapping file that same as a cache "name" in the ehcache configuration xml? What I want to do is define 2 named cache regions - one for read-only reference entities that won't change (lookup lists etc), and one for all other entities. So in ehcache I want to define two elements;

<cache name="readonly"> ... </cache>
<cache name="mutable"> ... </cache>

And then in my Hibernate mapping files, I will specify the cache to be used for each entity:

<hibernate-mapping>
    <class name="lookuplist">
        <cache region="readonly" usage="read-only"/>
        <property> ... </property>
    </class>
</hibernate-mapping>

Will that work? Some of the documentation seems to imply that a separate region/cache gets created for each mapped class...

Thanks.