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From Tomek Rękawek (JIRA) <j...@apache.org>
Subject [jira] [Created] (OAK-6636) Create a path cache for the CompositeNodeState
Date Fri, 08 Sep 2017 08:47:01 GMT
Tomek Rękawek created OAK-6636:
----------------------------------

             Summary: Create a path cache for the CompositeNodeState
                 Key: OAK-6636
                 URL: https://issues.apache.org/jira/browse/OAK-6636
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: composite
            Reporter: Tomek Rękawek
             Fix For: 1.8


The only non-reference field in the CompositeNodeState is the path. Assuming we have many
node states in the memory, it may be a bit expensive to store their paths in the memory.

On the other hand, after the recent optimizations (see linked issues), the set of the nodes
which should be wrapped with the CompositeNodeState is limited to:

* /
* /oak:index and its direct children
* /jcr:system
* /jcr:system/nt:permissionsStore

That's why it makes sense to use a string cache to store all the paths.



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