Nodejs backends are not "as performant as you build them" nodejs is slow! This is an undeniable fact. If you ever have to do anything computationally intensive, which every backend at some point will nodejs will become the bottleneck.
‘nodejs is too slow’ is high school level backward rationalization.
‘nodejs is too slow for my use case’ is getting there.
Most stuff we engineer maxes out the database way way waaaay before it saturates its CPU capacity regardless of the language used. You’d better know very well that you’ll be vulnerable to this as a business, otherwise your inefficient competitors will take your money faster than you can build value.
[0] - https://www.techempower.com/benchmarks/#hw=ph&test=composite...
Deno would have probably scored well too (it uses Rust's Hyper crate under the hood), but they're only running a single instance of the server despite Deno supporting the Linux SO_REUSEPORT socket option, which is important because the test is run on three servers with Intel Xeon Gold 5120 Processors that have 14 cores and 28 hyperthreads [0].
[0] https://github.com/TechEmpower/FrameworkBenchmarks/tree/9f0c...
> the whole premise of node was async io, so if you're doing a bunch of blocking stuff then yeah, you're going to have issues.