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https://issues.apache.org/jira/browse/OAK-3003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14644605#comment-14644605
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angela commented on OAK-3003:
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ok... in case you happen do remember something that could potentially be
affected, please let me know.
> Improve login performance with huge group membership
> ----------------------------------------------------
>
> Key: OAK-3003
> URL: https://issues.apache.org/jira/browse/OAK-3003
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core
> Reporter: angela
> Assignee: angela
> Labels: performance
> Attachments: OAK-3003.patch, OAK-3003_2.patch, OAK-3003_3.patch,
> group_cache_in_userprincipalprovider.txt
>
>
> As visible when running {{LoginWithMembershipTest}} default login performance
> (which uses the {{o.a.j.oak.security.principal.PrincipalProviderImpl}} to
> lookup the complete set of principals) suffers when a given user is member of
> a huge number of groups (see also OAK-2690 for benchmark data).
> While using dynamic group membership (and thus a custom {{PrincipalProvider}}
> would be the preferable way to deal with this, we still want to optimize
> {{PrincipalProvider.getPrincipals(String userId}} for the default
> implementation.
> With the introduction of a less generic implementation in OAK-2690, we might
> be able to come up with an optimization that makes use of the very
> implementation details of the user management while at the same time being
> able to properly secure it as we won't need to extend the public API.
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