Sorry, where do the authors claim they achieved >100k connections per second?
Can't see how this can be replicated as a controlled experiment nowadays, unfortunately.
But if you define exactly what's a request, what's a response, and what the connection/response ratio is let's have a race.
Like, you set the parameters, and whoever serves that on lower-capability hardware wins. Py3 plus low-level C/Rust hacks vs Elixir, say.
I offered to beat whatever you've done by tweaking the Py3 stdlib. Not by writing a plain C implementation.
If you for some reason doubt that this old python thing is of the real world - let me disappoint you. It was done because nothing else could do those 100K rps back then. And it did the thing for five years, until the whole stack was ditched.
As an Elixir user who had to deal with high connections/s in the past, I found it interesting and useful. I use Elixir for reasons that have nothing to do with performance so a language comparison isn’t particularly interesting.