Check on the Remote Object

Hi All,
We have a situation where we have multiple RMI Servers for a particular setup. To reduce the response time what we are doing is, everytime we look up for a server for first time we store the referece then onward any call to the same server will not be through look up but through this cached reference.
The problem is if a referece is cached then if before the second call comes on the same server there is a possibility that the server might have been restarted. Now if i invoke a method on this cached ref then i will get exception. How can i handle this case ?. I want to check whether the reference is still valid, if yes, then invoke the method otherwise lookup and then invoke.
Any idea ?
Sachin

i cann't even do that cause of following.
<code>
try
LookupServer() // This will either look up or if exists in the cache return that otherwise lookup & return
Remote call /// This could fail
Extra logic
catch(Exception e)
Exception thrown
go back and lookup and fire the method
</code>
or
<code>
try
LookupServer() // This will either look up or if exists in the cache return that otherwise lookup & return
Remote call /// This could fail
catch(Exception e)
Exception thrown
go back and lookup and fire the method
Extra logic
</code>
Second option is preferable but the problem is that the same has to be repeated @ every method call. Rather i would like to have the logic in method LookupServer() only so it will be taken care once and for all methods.

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