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[LUCENE-9038] Evaluate Caffeine for LruQueryCache - Lucene - [issue]
...LRUQueryCache appears to play a central role in Lucene's performance. There are many issues discussing its performance, such as LUCENE-7235, LUCENE-7237, LUCENE-8027, LUCENE-8213, and LUCENE...
http://issues.apache.org/jira/browse/LUCENE-9038    Author: Ben Manes , 2019-11-10, 07:45
[SOLR-8241] Evaluate W-TinyLfu cache - Solr - [issue]
...SOLR-2906 introduced an LFU cache and in-progress SOLR-3393 makes it O(1). The discussions seem to indicate that the higher hit rate (vs LRU) is offset by the slower performance of the imple...
http://issues.apache.org/jira/browse/SOLR-8241    Author: Ben Manes , 2019-10-04, 06:13
[SOLR-7355] Java 8: ConcurrentLinkedHashMap -> Caffeine - Solr - [issue]
...When Solr transitions to requiring Java 8, please upgrade to Caffeine. The performance should be relatively the same. The per-instance memory usage should be smaller and Solr may decide to o...
http://issues.apache.org/jira/browse/SOLR-7355    Author: Ben Manes , 2017-02-15, 16:41