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From Ole Ersoy <>
Subject Re: Tomcat 7 Shared Class Loader Removed?
Date Wed, 01 Jun 2011 20:33:12 GMT

Thank you.  I have some jars that I'm going to create an RPM for to help with provisioning.
 Since I'm doing that I thought linking or putting them in the shared class loader repository
might be smart, but perhaps not :).

Thanks again,
- Ole

On 06/01/2011 03:10 PM, Caldarale, Charles R wrote:
>> From: Ole Ersoy []
>> Subject: Re: Tomcat 7 Shared Class Loader Removed?
>> I was thinking about putting the jars in the shared repository,
>> rather than deploying them with the war.  Could you please help
>> me understand why this is bad?
> 1) You would have data sharing - probably inadvertent - across all the webapps.  Information
can leak from one to another, which has serious integrity and security implications.
> 2) You would introduce versioning dependencies across all your webapp deployments, so
if one copy of the webapp needed to be updated for a given client set, all would have to be
updated simultaneously.
> 3) Redeployment or restart of a single webapp would be impossible.
> Other than saving a certain amount of disk and memory space (both of which are exceedingly
cheap these days), what do you think you would gain?
>   - Chuck
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