what is the difference between stateless and stateful
sessions?
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Answer Posted / amar
1.when we use stateless, we look up the bean, call a method,
we give up the bean reference, the bean return to pool;
2.when we use stateful, we look up the bean and keep the
reference for a long time(may several minutes to hours, say
shopping cart), we call methods sometime. if we use
stateless, each client will always associated one bean in
memory, it costs a lot! for stateful, we don't need to worry
about it too much, the container will passivate some of them
to disk when resource is not enough. I think it is the real
benefit of stateful session bean.
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