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https://issues.apache.org/jira/browse/SLING-3505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14043456#comment-14043456
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Antonio Sanso commented on SLING-3505:
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[~justinedelson] thx a lot so far!!
> Improve handling of updates to mapping (alias, vanity path)
> -----------------------------------------------------------
>
> Key: SLING-3505
> URL: https://issues.apache.org/jira/browse/SLING-3505
> Project: Sling
> Issue Type: Improvement
> Components: ResourceResolver
> Affects Versions: Resource Resolver 1.1.0
> Reporter: Carsten Ziegeler
> Assignee: Antonio Sanso
> Attachments: MapEntry.java.rej, SLING-3505-patch.txt,
> SLING-3505-patch2.txt, SLING-3505-patch2.txt, SLING-3505-patch3-je.txt,
> SLING-3505-patch3.txt, SLING-3505-patch3.txt
>
>
> The update handling for the mapping including aliases and vanity path is a
> simple algorithm which simply updates the whole mapping. Especially with
> large mapping info spread across the repository, a simple update of a single
> property results in the whole mapping info to be recreated.
> It would be great if this could be improved.
> Right now, only the active mapping is hold in memory - as a change of a
> single property might cause to activate a totally different mapping than the
> one which was changed (e.h. when the ordering is changed), the update needs
> to be more complex or more information needs to be hold in memory.
> In addition there is more to consider, like if the vanity path info is
> changed, only the new value is available - but the old is gone.
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