Yes. Check Amazon, Hulu, LinkedIn, YellowPages and [url=http://rubyonrails.org/applications]many more[/url]. We do cover deployment for production servers in chapter 8, and deploying Web apps with load balancing in Appendix C.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: Ruby in Practice - Digesting for Production Environments