Github user arkadius commented on the issue: https://github.com/apache/nifi/pull/3111 @markap14 what do you think about using https://github.com/ben-manes/caffeine instead? They have benchmarks showing performance difference from current approach (named `LinkedHashMap_Lru`). Take a look at probably the most important _Read 100%_ scenario. If you want, I can also rewrite other `LinkedHashMap` usages for cache? `grep removeEldestEntry` shows 10 other places.
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