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

There is a large amount of state.
Most changes come from one source (place the server there).
Polling for clients that don't need to know of every change.
Client callbacks (via Observer pattern) for clients that need to know of every change soon after it happens.

Last modified on 9 Feb 2002 by AO