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https://issues.apache.org/jira/browse/LUCENE-6107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-6107:
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Attachment: LUCENE-6107.patch
Here is a patch tha adds 3 metrics to LRUFilterCache:
- #getTotalCount: total number of lookups in the cache
- #getHitCount: number of successful lookups in the cache
- #getMissCount: number of computed cache entries
> Add statistics to LRUFilterCache
> --------------------------------
>
> Key: LUCENE-6107
> URL: https://issues.apache.org/jira/browse/LUCENE-6107
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6107.patch
>
>
> It would be useful to have statistics about the usage of the filter cache to
> figure out whether the cache is useful at all and to help tune filter caching
> policies.
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