Java Persistence with Hibernate

13.4. Caching in practice

First we'll consider each entity class and collection and find out what cache concurrency strategy may be appropriate. After we select a cache provider for local and clustered caching, we'll write their configuration file(s).

13.4.1. Selecting a concurrency control strategy

The Category has a small number of instances and is updated rarely, and instances are shared between many users. It's a great candidate for use of the second-level cache.

Start by adding the mapping element required to tell Hibernate to cache Category instances.

<class name="auction.model.Category"
       table="CATEGORY">

    <cache usage="read-write"/>

    <id ...

</class>

The usage="read-write" attribute tells Hibernate to use a read-write concurrency strategy ...