For my use cases, these massively outperform the built-in java Maps and Sets.
It would be interesting to include these in the benchmark. A quick googling finds plenty of comparisons that are a few years old now but I can’t find a current up to date java map/set benchmark.
I have a performance-critical framework that went from Java’s Map to Trove (http://trove4j.sourceforge.net/html/overview.html) and now uses FastUtil (https://fastutil.di.unimi.it/).
For my use cases, these massively outperform the built-in java Maps and Sets.
It would be interesting to include these in the benchmark. A quick googling finds plenty of comparisons that are a few years old now but I can’t find a current up to date java map/set benchmark.