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https://issues.apache.org/jira/browse/OAK-3850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15142476#comment-15142476
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Thomas Mueller commented on OAK-3850:
-------------------------------------
I see the following statistics are useful (per map):
- Space usage (on disk)
- Hit rate on the persistent part. Currently a hit on the persistent part of
the cache seems to be counted as a cache miss; only a hit on the in-memory part
is considered a cache hit.
> Collect and expose Persistent Cache stats
> -----------------------------------------
>
> Key: OAK-3850
> URL: https://issues.apache.org/jira/browse/OAK-3850
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, documentmk
> Reporter: Teodor Rosu
> Assignee: Thomas Mueller
> Fix For: 1.4
>
> Attachments: OAK-3850-v0.patch, OAK-3850-v1.patch,
> test-performance-v0.patch
>
>
> Expose persistent cache statistics ( see: [Guava
> CacheStats|http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/cache/CacheStats.html]
> )
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