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From Aaron Smuts <aasm...@wisc.edu>
Subject RE: Cache returning unexpected items.
Date Mon, 23 Feb 2004 16:05:42 GMT
This sounds very strange.  Are you sure the cache was returning the
wrong value?  There is no way your program could have a multithreading
problem and switch up some entries?  The cache passes objects by
reference--could you have tried to recycled some entry somewhere?

Aaron

> -----Original Message-----
> From: Matthew Cooke [mailto:mpcooke3@lineone.net]
> Sent: Monday, February 23, 2004 9:26 AM
> To: Turbine JCS Users List
> Subject: Cache returning unexpected items.
> 
> This is probably a bit of a shot in the dark, but I'll ask on the off
> chance anyone has any ideas.
> 
> Last week I replaced our "developed in house" caching solution with
JCS.
> JCS was configured with two LTCP caches and a DC. (LTCP1, LTCP2, DC)
> 
> During testing the cache returned the same results as a our in house
> caching solution.
> So, we left it running on a subset of our production servers over the
> weekend.
> 
> Unfortunately on saturday, possibly after restarting some of the
caches
> it appears that JCS started returning the wrong Value for a given Key.
> This was quite unfortunate to say the least, the cache contained
> commercially sensitive data.  Customers started seeing other clients
> data. "clientName" was one of the properties we keyed on.
> 
> We are keying on an object that basically wraps a java.util.hashtable
> which should serialize all it's data. I fail to see how under any
> circumstances JCS could return the wrong value
> 
> Anyone have any ideas? We didn't see this behaviour during testing
> unfortunately.
> 
> Matt.
> 
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