Phusion Passenger™— a.k.a. mod_rails or mod_rack — makes deployment of Ruby web applications, such as those built on the revolutionary Ruby on Rails web framework, a breeze. It follows the usual Ruby on Rails conventions, such as “Don’t-Repeat-Yourself”.
This is useful for Capistrano deployments when you need to start rake process which doesn’t run as daemon.
If you want to run Apache with mod_worker you will have to us PHP via FCGI. Here is how to install it on Ubuntu 9.04 Server edition.
memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.
There is a known problem with ruby on Debian or Ubuntu with gem command not working properly. Here is how to fix it.