What is the current state of event driven programming with fibers in ruby?

This page summarizes the projects mentioned and recommended in the original post on /r/ruby

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  • Concurrent Ruby

    Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.

    https://github.com/ruby-concurrency/concurrent-ruby seems to be the current king of concurrency in Ruby. A lot of different concurrency models are implemented so you can pick whichever makes the most sense for you. The downside is that since the library doesn't focus on one model over another, it's probably difficult to learn for beginners.

  • libev_scheduler

    A libev-based fiber scheduler for Ruby 3.0

    Lastly, if anything that I wrote here is wrong or inaccurate please correct me, but please don't take it personally! As I wrote in the libev_scheduler README, at worst I'm just some random guy being wrong on the internet. :-)

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  • ruby3-tcp-server-mini-benchmark


    I added some more information about the Polyphony-based script here: https://github.com/jsaak/ruby3-tcp-server-mini-benchmark/issues/1

  • Polyphony

    Fine-grained concurrency for Ruby

    There's the Polyphony project, which implements seamless concurrency on top of Ruby fibers. It's still not production-grade, but is used in production. Polyphony follows a different path in that it allows developers to continue using the Ruby core and stdlib APIs, and consequentially large parts of the Ruby ecosystem, in a multi-fiber environment. It puts a strong emphasis on structured concurrency, robust error handling and providing concurrency primitives that can be used to implement all kinds of concurrency patterns, such as actors (message passing between different fibers) and supervision trees.

  • tipi

    Tipi - the All-in-one Web Server for Ruby Apps

    As far as tools based on Polyphony, currently there's Tipi, a web server based on Polyphony that is still in early stages of development, but already supports HTTP/1, HTTP/2, SSL termination and WebSockets, among other things.

  • ruby

    The Ruby Programming Language

    Samuel, I've just taken a look at the io.c code, which interacts with the scheduler interface, to verify whether I'm wrong or not. And now I see that in fact you have added read and write hooks that were merged into Ruby master about two weeks ago, so I stand corrected.

  • evt

    The Event Library (Fiber Scheduler) that designed for Ruby 3.0. (by dsh0416)

    As for your other comment on this thread, I think you'll agree that it's important to make a distinction between using io_uring for I/O readiness and using io_uring for performing actual I/O. The nio4r gem is based on libev, and libev now has an (experimental) io_uring backend, but its only use is for checking I/O readiness. The evt gem includes code for performing reads and writes using io_uring, but at the present moment it's currently disabled.

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