A small and fast Ruby web server

gem install thin

Or add thin to your Gemfile:

gem 'thin'

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

thin start

Browse the example directory for sample applications.

Use a rackup (config.ru) file and bind to localhost port 8080:

thin -R config.ru -a 127.0.0.1 -p 8080 start

Store the server process ID, log to a file and daemonize:

thin -p 9292 -P tmp/pids/thin.pid -l logs/thin.log -d start

Thin is quite flexible in that many options can be specified at the command line (see thin -h for more).

You can create a configuration file using thin config -C config/thin.yml.

You can then use it with all commands, such as: thin start -C config/thin.yml.

Here is an example config file:

--- 
user: www-data
group: www-data
pid: tmp/pids/thin.pid
timeout: 30
wait: 30
log: log/thin.log
max_conns: 1024
require: []
environment: production
max_persistent_conns: 512
servers: 1
threaded: true
no-epoll: true
daemonize: true
socket: tmp/sockets/thin.sock
chdir: /path/to/your/apps/root
tag: a-name-to-show-up-in-ps aux

Copyright, 2007-2025, by Marc-Andre Cournoyer and other contributors.

Released under the Ruby License, the 2-clause BSDL and the GNU General Public License (GPL) version 2 (or later). You can redistribute it and/or modify it under the terms of any of these licenses.

The parser was originally from Mongrel http://mongrel.rubyforge.org by Zed Shaw. Mongrel is copyright 2007 Zed A. Shaw and contributors. It is licensed under the Ruby license and the GPL2.

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

Get help at http://groups.google.com/group/thin-ruby/ Report bugs at https://github.com/macournoyer/thin/issues and major security issues directly to me at macournoyer@gmail.com.