it's written in go, same as haven, and it's based off relayer instead of khatru, which i think does stupid things with the concurrency, way too much of it in eventstore libraries

i completely rewrote the entire go-nostr library as well, everything is way faster, you can see here:

https://github.com/mleku/nostrbench

it's got the fastest JSON and binary encoder you can get... i have no idea what strfry's data encoding performance is like but i doubt it could be much faster than this