What stack can handle 500,000 orders per minute - 22.3 billion a month - on a $6/month server?
I'd at least expect that to be possible in Node, and would be somewhat surprised if a Go or Rust framework didn't hit that mark.
Hello world will work, but once parsing, validation, and database queries get involved, you'll need some beefier hardware to get those numbers.
I can't get the cloud benchmarks for 2022 to work (a dedicated PowerEdge is the standard physical benchmark and that's not very realistic here), but according to these benchmarks: https://www.techempower.com/benchmarks/#section=data-r20&hw=... you're going to need some very optimized code to get close to 8k reqs/s.
My point was that the article quotes orders per month, while other systems are quoting requests per second. I found it funny that they tried to mask the low speed by using big numbers.