Not a Python dev but I worked a lot with Ruby performance a lot for the past few years. Do you really need async IO? Even at Google scale[1] it's kinda a waste

Not a Python dev but I worked a lot with Ruby performance a lot for the past few years. Do you really need async IO? Even at Google scale[1] it's kinda a waste of time for web/job servers and only required for proxying etc. The overhead of threads is massively overstated [2] Ruby scales a long way using Puma or Phusion Passenger with one process per core (just like NodeJS) and adding threads until you hit CPU saturation. Python must have something similar? [1] https://www.slideshare.net/e456/tyma-paulmultithreaded1 https://www.slideshare.net/e456/tyma-paulmultithreaded1 [2] https://eli.thegreenplace.net/2018/measuring-context-switching-and-memory-overheads-for-linux-threads/ https://eli.thegreenplace.net/2018/measuring-context-switchi...