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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-2672) Cache also failed principal lookups
Date Fri, 09 Jul 2010 12:11:50 GMT
Cache also failed principal lookups

                 Key: JCR-2672
                 URL: https://issues.apache.org/jira/browse/JCR-2672
             Project: Jackrabbit Content Repository
          Issue Type: Improvement
          Components: jackrabbit-core, security
            Reporter: Jukka Zitting
            Priority: Minor

The principal cache in Jackrabbit normally does a good job in ensuring good performance in
critical areas like ACL evaulation. However, the cache only includes successful principal
lookups, so an ACE that references a missing (or mistyped) principal can cause notable performance
issues as a new principal lookup is needed whenever the node covered by such an ACL is accessed.

To solve that problem I propose that we extend the principal cache to also cover negative
principal lookups.

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