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From "Tobias Bocanegra (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JCR-3688) Optimize MembershipCache invalidation
Date Fri, 01 Nov 2013 20:55:18 GMT
Tobias Bocanegra created JCR-3688:

             Summary: Optimize MembershipCache invalidation
                 Key: JCR-3688
                 URL: https://issues.apache.org/jira/browse/JCR-3688
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-core, security
            Reporter: Tobias Bocanegra
            Assignee: Tobias Bocanegra

The current membership cache is invalidated entirely for every membership change, i.e. entries
that are not affected by the change are invalidated. systems with many authorizables tend
to have a full membership cache will suffer from frequent invalidation.

The way the cache is invalidated today is based on synchronous observation event. From the
event alone it will be very inefficient to figure out all membership changes without extra
state keeping. A more direct approach is to invalidate the membership changes directly in
the cache based on the Group.addMember(), Group.removeMember() and Group.remove() methods.
If the user manager is not autosave enabled, the invalidation needs to be delayed until the
save call.

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