I'm a new Ruby on Rails developer who is working on applications for several different clients using the Ruby on Rails framework. The question that I've got to pose all of you concerns the differences between mod_ruby and FastCGI. I'm thinking about trying to get my webhost to install mod_ruby because it would run lightyears faster, but there's something I found about mod_ruby that they would probably take issue with.
On the Wikipedia article for mod_ruby, it reads: "Its drawback is that the characteristic sharing of classes among Apache processes is not safe for multiple applications." However, there is no citation.
So here's my question - is this a serious safety concern? If so, how did the developers of mod_php get around this problem? Is there another, more secure, solution to running ruby apps on a web server that is faster than mod_ruby?
Thanks in advance, Matt