A very fast & simple Ruby web server
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Tiny, fast & funny HTTP server

Thin is a Ruby web server that glues together 3 of the best Ruby libraries in web history:

  • the Mongrel parser: the root of Mongrel speed and security
  • Event Machine: a network I/O library with extremely high scalability, performance and stability
  • Rack: a minimal interface between webservers and Ruby frameworks

Which makes it, with all humility, the most secure, stable, fast and extensible Ruby web server bundled in an easy to use gem for your own pleasure.

Site:  http://code.macournoyer.com/thin/
Group: http://groups.google.com/group/thin-ruby/topics
Bugs:  http://thin.lighthouseapp.com/projects/7212-thin
Code:  http://github.com/macournoyer/thin
IRC:   #thin on freenode


For the latest stable version:

sudo gem install thin

Or from source:

git clone git://github.com/macournoyer/thin.git
cd thin
rake install


A +thin+ script offers an easy way to start your Rails application:

cd to/your/rails/app
thin start

But Thin is also usable with a Rack config file. You need to setup a config.ru file and pass it to the thin script:

#cat config.ru
app = proc do |env|
     'Content-Type' => 'text/html',
     'Content-Length' => '2'

run app

thin start -R config.ru

See example directory for more samples and run 'thin -h' for usage.


Ruby License, http://www.ruby-lang.org/en/LICENSE.txt.


The parser was stolen from Mongrel http://mongrel.rubyforge.org by Zed Shaw. Mongrel Web Server (Mongrel) is copyrighted free software by Zed A. Shaw You can redistribute it and/or modify it under either the terms of the GPL.

Thin is copyright Marc-Andre Cournoyer macournoyer@gmail.com

Get help at http://groups.google.com/group/thin-ruby/ Report bugs at http://thin.lighthouseapp.com/projects/7212-thin and major security issues directly to a team member (see COMMITTERS)