# \[ANN\] unicorn 5.7.0 - Rack HTTP server for fast clients and \*nix

**URL:** https://rubytalk.org/t/ann-unicorn-5-7-0-rack-http-server-for-fast-clients-and-nix/75312
**Category:** ruby-talk
**Created:** [8 September 2020 08:44 UTC](https://rubytalk.org/t/ann-unicorn-5-7-0-rack-http-server-for-fast-clients-and-nix/75312 "2020-09-08T08:44:29Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Eric\_Wong](https://avatars.discourse-cdn.com/v4/letter/e/a3d4f5/32.png) [@Eric\_Wong](https://rubytalk.org/u/Eric_Wong)
#### Post date: [8 September 2020 08:44 UTC](https://rubytalk.org/t/ann-unicorn-5-7-0-rack-http-server-for-fast-clients-and-nix/75312/1 "2020-09-08T08:44:29Z")

</div>

unicorn is an HTTP server for Rack applications designed to only serve  
fast clients on low-latency, high-bandwidth connections and take  
advantage of features in Unix/Unix-like kernels. Slow clients should  
only be served by placing a reverse proxy capable of fully buffering  
both the the request and response in between unicorn and slow clients.

Disclaimer:

Due to its ability to tolerate crashes and isolate clients, unicorn  
is unfortunately known to prolong the existence of bugs in applications  
and libraries which run on top of it.

Consider this just an announcement to inform existing users of a  
new version, not something to convince you to switch to something  
that set the entire Ruby world back decades in terms of concurrency.

.onion URLs below are available for Tor users and can reduce  
our operating costs:

\* [https://yhbt.net/unicorn/](https://yhbt.net/unicorn/)  
&nbsp;&nbsp;[http://unicorn.ou63pmih66umazou.onion/](http://unicorn.ou63pmih66umazou.onion/)  
\* public list: [unicorn-public@yhbt.net](mailto:unicorn-public@yhbt.net)  
\* mail archives: [https://yhbt.net/unicorn-public/](https://yhbt.net/unicorn-public/)  
&nbsp;&nbsp;[http://ou63pmih66umazou.onion/unicorn-public/](http://ou63pmih66umazou.onion/unicorn-public/)  
\* git clone [https://yhbt.net/unicorn.git](https://yhbt.net/unicorn.git)  
&nbsp;&nbsp;torsocks git clone [http://ou63pmih66umazou.onion/unicorn.git](http://ou63pmih66umazou.onion/unicorn.git)  
\* [https://yhbt.net/unicorn/NEWS.atom.xml](https://yhbt.net/unicorn/NEWS.atom.xml)  
&nbsp;&nbsp;[http://unicorn.ou63pmih66umazou.onion/NEWS.atom.xml](http://unicorn.ou63pmih66umazou.onion/NEWS.atom.xml)  
\* nntp://news.public-inbox.org/inbox.comp.lang.ruby.unicorn  
&nbsp;&nbsp;nntp://ou63pmih66umazou.onion/inbox.comp.lang.ruby.unicorn  
&nbsp;&nbsp;imaps://news.public-inbox.org/inbox.comp.lang.ruby.unicorn.0  
&nbsp;&nbsp;imap://ou63pmih66umazou.onion/inbox.comp.lang.ruby.unicorn.0

Changes:

&nbsp;&nbsp;&nbsp;&nbsp;unicorn 5.7.0  
&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;Relaxed Ruby version requirements for Ruby 3.0.0dev.  
&nbsp;&nbsp;&nbsp;&nbsp;Thanks to Jean Boussier for testing