zio-http VS Http4s

Compare zio-http vs Http4s and see what are their differences.

zio-http

A next-generation Scala framework for building scalable, correct, and efficient HTTP clients and servers (by zio)
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zio-http Http4s
8 24
745 2,517
1.1% 0.3%
9.5 9.7
6 days ago 8 days ago
Scala Scala
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

zio-http

Posts with mentions or reviews of zio-http. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-03-07.
  • Creating a CLI app with scala and Graal VM: should I switch to Rust?
    1 project | /r/scala | 31 Aug 2023
    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 is scala's modern Web API framework?
    5 projects | /r/scala | 7 Mar 2023
  • Show HN: Open-source non-blocking NIO Java HTTP Server
    8 projects | news.ycombinator.com | 24 Oct 2022
    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

  • Akka Fork FUD
    2 projects | /r/scala | 21 Sep 2022
    Yep! https://github.com/zio/zio-http
  • zio-http, any experiences to share
    2 projects | /r/scala | 17 Sep 2022
    I was looking at HTTP frameworks for Scala. I found zio-http, https://zio.github.io/zio-http/. Has anyone tried this framework?
  • How is scala as microservices-based backend for web service?
    3 projects | /r/scala | 25 Aug 2021
  • A library like Express.js?
    7 projects | /r/scala | 26 Jul 2021
    https://github.com/dream11/zio-http very simple and super performant, dead easy to abstract over routes to make a router
  • ZIO vs. Cats Effect for api
    2 projects | /r/scala | 10 Jun 2021
    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!

Http4s

Posts with mentions or reviews of Http4s. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-02.
  • How to get started?
    4 projects | /r/scala | 2 Jun 2023
    http4s is a Typelevel project, and therefore falls into the "program in Scala as if it were Haskell" category. Many people find this off-putting, but honestly, I think with the resources listed above, this is the option at the best intersection of "mature" and "well-documented" available in Scala. The reason it's off-putting to many people is that Haskell-style pure FP isn't mainstream, so it isn't so much a matter of learning a new technology as it is a matter of learning a new paradigm, which necessarily means surfacing and unlearning things you already know, and perhaps confronting the uncomfortable feeling that things you thought were "fundamental," "have to be that way," aren't, and don't. I personally found this process liberating. But not everyone does.
  • Server Stack Options for Scala
    4 projects | /r/scala | 13 Feb 2023
    If you want a mature REST API library, I recommend http4s. Be aware, though, that it’s based on purely-functional programming with Cats, cats-effect, and fs2, so if you’re not familiar with them or aren’t prepared to commit to the paradigm, the learning curve may be daunting, seem pointless, or both.
  • Sequential application of a constructor?
    2 projects | /r/scala | 21 Jan 2023
    See also cats-effect and fs2. cats-effect gives you your IO Monad (and IOApp to run it with on supported platforms). fs2 is the ecosystem’s streaming library, which is much more pervasive in functional Scala than in Haskell. For example, http4s and Doobie are both based on fs2.
  • Grasping the concepts and getting them down to earth
    4 projects | /r/scala | 4 Nov 2022
    Most important/known: * https://http4s.org/ - an HTTP client/server * https://github.com/typelevel/fs2 - streaming * https://github.com/tpolecat/doobie - JDBC
  • Relative popularity of programming languages on Hacker News
    5 projects | news.ycombinator.com | 13 Oct 2022
    Scala devs are too busy wondering about free monads and F[Request[F] => Response[F]]. I am very pleased by http4s, Doobie, ScalaJS, and the whole ecosystem, really: https://http4s.org
  • http4s as a replacement for akka-http?
    6 projects | /r/scala | 15 Sep 2022
    In reality, your performance issues will not be http4s, but something else. That being said, there are improvements that http4s can and is making, and I'm quite excited about the future 1.0 release, which has some important and fundamental performance improvements already, like a a 125% performance improvement on the plaintext benchmark from https://github.com/http4s/http4s/pull/6091 - and finally, yes, akka-http does have very good performance, but you can also get good performance out of http4s.
  • Is Scala a good choice for a data intensive web backend?
    5 projects | /r/scala | 3 Sep 2022
    http4s for REST services.
  • Scala became Typelevel/Zio only ecosystem?
    4 projects | /r/scala | 6 Aug 2022
    This is a long list of misunderstandings I don’t have the patience to unpack. Instead, let me refer you to the links in my top comment in the thread, then suggest you learn at least http4s, a purely-functional web service library that’s been used in production for a decade or so now.
  • Pleasant to use Scala libraries
    5 projects | /r/scala | 6 Jul 2022
    The most popular nowadays are - I guess - akka-http and http4s. You can also use Play if you don't want to start from scratch but prefer a framework-based approach.
  • Why do all frameworks use OOP? (php)
    1 project | /r/learnprogramming | 11 Apr 2022
    There are functional frameworks: https://http4s.org/

What are some alternatives?

When comparing zio-http and Http4s you can also consider the following projects:

FrameworkBenchmarks - Source for the TechEmpower Framework Benchmarks project

Akka HTTP - The Streaming-first HTTP server/module of Akka

Vert.x - Vert.x is a tool-kit for building reactive applications on the JVM

sttp - The Scala HTTP client you always wanted!

vertx-lang-scala - Vert.x for Scala

ZIO - ZIO — A type-safe, composable library for async and concurrent programming in Scala

cask - Cask: a Scala HTTP micro-framework

Finch.io - Scala combinator library for building Finagle HTTP services

zio-protoquill - Quill for Scala 3

Spray - A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable

ocpp - Open Charge Point Protocol

Play - The Community Maintained High Velocity Web Framework For Java and Scala.

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