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https://issues.apache.org/jira/browse/JCR-2672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jukka Zitting updated JCR-2672:
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Attachment: JCR-2672.patch
The attached patch implements the proposed change.
> 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
> Attachments: JCR-2672.patch
>
>
> 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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