Can remote stateless session bean references be cached in EJB3?

Yes, they can be cached. But I don't know if the behavior is defined what will happen should you have a cached reference and the server is rebooted underneath it. You can test that scenario, but the behavior may vary with the container.

If the server goes away, your references become invalid. As for caching during the normal lifecycle, this should be fine. I've done this for years, both in EJB2 and EJB3, and never had an issue.

Generally I just have a static 'LookupServices' class that just looks up the home, or returns the existing one if it's already there - and stores it in a map.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.