Since the EJB spec says nothing so far as I kno2 about load balancing, vendors
have beenleft to their own devices. Their solutions have all revolved around
clustering to my knowledge, which could be incorrect. I have a few questions
about clustering then.
1. What controls it? Is there some piece of gateway software that negotiates
where to go in the cluster?
2. IN a cluster, is there always only one instance of an entity bean fora
given row?
3. If 2 is answered yes, doesn't this imply, since the EJB spec says nothing
about load balancing, that the spec and entity beans in general are non-calable?
That is, multiple clients uisng multipel appservers in a cluster still need
somehow to go to the same instance in one apps erver instance. That doesn't
sound very scalable. In that case, clustering sounds pretty meaningfless, and
claimns that EJBs are scalable would seem not to apply to entity beans. Am I
missing something in this? Thanks.
Ken
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