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https://issues.apache.org/jira/browse/SOLR-15555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17389006#comment-17389006
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Mike Drob commented on SOLR-15555:
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Looking into it, AsyncCache sounds like exactly what I need, but there are a
bunch of API methods missing from it compared to Cache preventing it from being
a mostly-drop in replacement. So far the methods missing that I've seen are
putAll, invalidateAll, cleanup, stats, and eviction. Are some of these
intentionally omitted due to some nuance of the async nature?
> Use filterCache.computeIfAbsent in SolrIndexSearcher
> ----------------------------------------------------
>
> Key: SOLR-15555
> URL: https://issues.apache.org/jira/browse/SOLR-15555
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Mike Drob
> Priority: Major
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> When multiple concurrent queries come in at the same time, in several cases
> they can trigger concurrent computations of a DocSet for the cache. We should
> investigate where this happens and possibly take care to only do a single
> computation when possible.
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