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From "Caldarale, Charles R" <Chuck.Caldar...@unisys.com>
Subject RE: Is ThreadLocal safe to use in servlets
Date Sun, 03 Jun 2007 04:34:20 GMT
> From: lightbulb432 [mailto:veerukrishnan@hotmail.com] 
> Subject: Is ThreadLocal safe to use in servlets
> 
> Are ThreadLocal variables safe to use with servlets?

They're great for keeping track of bits and pieces for a given request,
but can lead to GC problems if used for data with a longer lifetime.
Keeping servlet- or application-scope information as ThreadLocal makes
it impossible to release such classes if the application is redeployed.
Judicious use of the remove() method is a necessity.

 - Chuck


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