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https://issues.apache.org/jira/browse/JCR-2710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Dürig updated JCR-2710:
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Attachment: JCR-2710.png
Graph of the performance difference between the two content models for group
memberships. The graphs represent the cumulative time for adding new users to a
group. The blue graph displays the old content model where group membership is
recorded in a multi valued property of weak references. The orange graph
display the new content model where group membership is recorded in a b-tree
like node structure.
> Add support for large number of users in a group
> ------------------------------------------------
>
> Key: JCR-2710
> URL: https://issues.apache.org/jira/browse/JCR-2710
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-core
> Affects Versions: 2.2.0
> Reporter: Michael Dürig
> Assignee: Michael Dürig
> Attachments: JCR-2710.png
>
>
> In the current implementation there are several factors which limit the
> number of users in a group:
> - group membership is recorded in a multi valued property which does not
> scale well
> - members of groups are collected eagerly which does not scale well
> I propose to add complementary support for recording group membership in a
> node structure to the current solution. That node structure would - similar
> to users and groups - add intermediate nodes when a group reaches a certain
> threshold on the number of its users.
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