Thin: A Ruby HTTP Daemon That’s Faster Than Mongrel
by ssk
Thin is a new Web server / daemon written in Ruby by Marc-André Cournoyer that uses the EventMachine, Rack, and Mongrel libraries. EventMachine makes it super fast at processing network I/O, Rack makes it easy to integrate with existing Ruby Web app frameworks, and Mongrel helps it parse HTTP. So, yes, the title is slightly misleading. Thin actually relies on Mongrel, but is ultimately faster than it, even against Mongrel's EventMachine-enhanced guise.
via http://www.rubyinside.com/thin-a-ruby-http-daemon-thats-faster-than-mongrel-688.html


