如何在EJB 3.1中缓存EJB远程接口？

Question

Is there any way to Cache the reference to remote EJB at client side?

In EJB 2.x it is achieved by caching the EJBHome .

Do we have any similar feature available in EJB 3.x to cache the EJB Remote Interface which will provide new instance of EJB (Stateless session bean) every time it is used? (In EJB 2.x we get new instance of EJB when we call create() method on EJBHome )

Answer 1

You don't need a new instance of the stateless session bean because they're stateless. The reference you have in the client is a stateless proxy, so the EJB container will obtain a new (or pooled) instance of the stateless bean for each request, and it will destroy (or return to the pool) the instance when the method completes. For EJB 3, you can simply cache the result of the lookup. This is implicitly encouraged by the @EJB field injection, which encourages you to store the EJB reference in a simple field.