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[LUCENE-9038] Improve LruQueryCache's concurrency - 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...    Author: Ben Manes , 2019-11-26, 04:20
[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...    Author: Ben Manes , 2019-10-04, 06:13