I'm not the author but you should probably ask there and not on HN. That said: > Since he does not perform any cache operations, as it is a concurrent map Wh

I'm not the author but you should probably ask there and not on HN. That said: > Since he does not perform any cache operations, as it is a concurrent map Why is it a concurrent map? To me it seems to be a regular rust hashtable. Unless you are going to tweak something most of this is going to be the very slow hashing algorithm.