The following is a very short guide on setting up Ruby Enterprise Edition (REE), nginx and Passenger, for serving Ruby on Rails applications on Ubuntu. It also includes a few quick and easy optimization tips. We start with setting up REE (x64), using the .deb file provided by Phusion: wget https://rubyforge.org/frs/download.php/66163/ruby-enterprise_1.8.7-2009.10_amd64.deb sudo dpkg -i ruby-enterp