zio-http VS scala-http-benchmark

For JNI, make sure you have `-H:+JNI` in your native image options. Be aware that Netty is a bit of a monster to include in a native image application (I just recently added it a Netty dependency and it completely broke my project and took a good day to figure out). Mine was through zio-http and I was able to piece together some working options from github issues: https://github.com/zio/zio-http/issues/20.

What's the hardware being used for your test? I get 55k RPS with a basic 200 responder with zio-http[0] (which uses Netty) on my i5-6600K, and over 20k RPS for an e2e POST endpoint that does write batching to postgres (committing the insert before responding with the db generated id). Postgres, client (vegeta[1]), and the app all on the same machine. I think that was with keep-alive, I think like 256 clients for the basic responder and 1024 for the one that writes to the db. There's a recently merged PR for zio-http that does 1M req/s on whatever machine they test on[2] so Netty can absolutely scale to high RPS.

[0] https://github.com/zio/zio-http

[1] https://github.com/tsenart/vegeta

[2] https://github.com/zio/zio-http/pull/1659

Yep! https://github.com/zio/zio-http

I was looking at HTTP frameworks for Scala. I found zio-http, https://zio.github.io/zio-http/. Has anyone tried this framework?

https://github.com/dream11/zio-http very simple and super performant, dead easy to abstract over routes to make a router

I'm starting a new project, essentially a standard web app (SPA + rest api). I'd like to stay as functional as possible. I'm debating between http4s + cats effect, http4s + zio, and zio-http (https://github.com/dream11/zio-http). I'm having a hard time figuring out which stack has the strongest (safest?) future especially with scala 3 out. Cats Effect 3 looks amazing, but so does the zio ecosystem. Thanks for any opinions/advice!

So my question is - why does http4s have already ~3 years of development time for its 1.0 version? Also bonus question - why does it have such a poor performance in these benchmarks? I know that those aren't everything but the difference is very huge and I would like to know if there is a post or comment somewhere(or anything) from a person that did a deep dive into it and could explain why the performance is what it is. Also, can anyone share an experience of using http4s in a prod environment? What are the specs of vm it needs to handle 1000 rps?