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https://issues.apache.org/jira/browse/SOLR-15433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bruno Roustant updated SOLR-15433:
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Fix Version/s: 8.10
> Replace basic LRU by Caffeine Cache for transient core cache
> ------------------------------------------------------------
>
> Key: SOLR-15433
> URL: https://issues.apache.org/jira/browse/SOLR-15433
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Bruno Roustant
> Priority: Major
> Fix For: 8.10
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Currently TransientSolrCoreCacheDefault uses a basic LinkedList LRU cache to
> store loaded transient cores. This can easily be replaced by the much more
> effective Caffeine Cache.
> For example, with the current simple LRU when new cores are added, the least
> recently accessed cores are evicted. So when a bunch of rarely used transient
> cores are opened for punctual access (and added temporarily to the cache)
> this causes the eviction of a bunch of regularly accessed cores. However this
> case is nicely handled by the Caffeine Cache which keeps the regularly
> accessed cores.
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