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https://issues.apache.org/jira/browse/SLING-2521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13443740#comment-13443740
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Justin Edelson commented on SLING-2521:
---------------------------------------
duplicate case is handled with a warning
> Improve performance of sling:alias lookups and/or provide the ability to
> disable this feature
> ---------------------------------------------------------------------------------------------
>
> Key: SLING-2521
> URL: https://issues.apache.org/jira/browse/SLING-2521
> Project: Sling
> Issue Type: New Feature
> Components: JCR
> Affects Versions: JCR Resource 2.1.0
> Reporter: Felix Meschberger
> Assignee: Justin Edelson
> Fix For: Resource Resolver 1.0.0
>
> Attachments: disabling-alias-performance.png, SLING-2521.patch,
> SLING-2521-u1.patch
>
>
> The the JCR based ResourceResolver.resolve method currently support
> sling:alias properties on nodes to allow for resolution of translated URLs.
> This is potentially a very expensive operation particularly in the case of
> non existing resource.
> It should be analyzed whether (a) disabling sling:alias support has a
> measurable benefit on resource resolution (particularly when not finding a
> resource) and (b) whether it would be easy and simple to disable such support
> per configuration.
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