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https://issues.apache.org/jira/browse/SOLR-3486?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated SOLR-3486:
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Attachment: LFUMap.java
I've just uploaded LFUMap.java based on your implementation of LFUCache. To
have a LFU cache with configurable maximum size in bytes, just wrap an instance
of this class into a SizableCache.
I uploaded this file to show how SizableCache could be used with different
kinds of backends. But building a LFUCache is a different issue. I think we
should continue the discussion on LFUCache on SOLR-3393 and only discuss
configurability of the mem size of Solr caches here. Feel free to reuse the
code LFUMap.java if you want, just beware that I didn't test it much. :-)
> The memory size of Solr caches should be configurable
> -----------------------------------------------------
>
> Key: SOLR-3486
> URL: https://issues.apache.org/jira/browse/SOLR-3486
> Project: Solr
> Issue Type: Improvement
> Components: search
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: LFUMap.java, SOLR-3486.patch, SOLR-3486.patch
>
>
> It is currently possible to configure the sizes of Solr caches based on the
> number of entries of the cache. The problem is that the memory size of cached
> values may vary a lot over time (depending on IndexReader.maxDoc and the
> queries that are run) although the JVM heap size does not.
> Having a configurable max size in bytes would also help optimize cache
> utilization, making it possible to store more values provided that they have
> a small memory footprint.
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