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RMI System Design: Patterns and Pitfalls	O'Reilly Conference On Enterprise Java
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Client/Server Pitfalls

If the state is large, don't make the root state object Serializable. Serializable state could be transferred in its entirety to clients.
Similarly, when designing a Remote interface, avoid overly large objects for transfers.
For state updates from clients, keep updates as fine-grained as possible, to avoid locking too much data and blocking other clients.

Last modified on 9 Feb 2002 by AO