In this talk I discuss writing custom Mongrel handlers to integrate with your Rails app. I also cover why Rails is not Thread safe and why Merb is

1. Mongrel Learning how to walk the dog

3. What is Mongrel?

5. Ragel State Machine Defined HTTP Parser

6. Why?

7. FastCGI is Poop

14. Rails vs Mongrel Handler in a Hello World Battle Rails: Mongrel Handler:

15. Naive Benchmarks Mongrel Handler: Rails: 7Mb RAM 35Mb RAM

19. Integrating HelloHandler into our Rails app

20. Another Useless Benchmark

21. Real World Example SecureFile

24. Dispatching Rails vs Merb Request comes in **Mutex gets locked** Parse CGI + Mime(expensive) Route recognition(expensive) Before Filter Chain Call Controller Action Render Template **Mutex Unlocked** Results returned to client Request comes in Parse CGI + Mime Route recognition **Mutex gets locked** Before Filter Chain Call Controller Action Render Template **Mutex Unlocked** Results returned to client Rails Merb(with ActiveRecord)

25. Merb Hello World

28. Merb’s Mongrel Handler

29. Questions?