Ruby Tuesday 6/30 xdite's talk about Sinatra / Rack / Rails Metal

2. Agenda
• Sinatra Introduction
• Real Example
• Rack
• Rails Intergation

3. • http://twitter.com/xdite
• http://blog.xdite.net
• Rails Developer

4. Sinatra is ...
• ruby web framework library
• not MVC ( Model-View-Controller )
• DSL for defining RESTful HTTP actions

5. RAILS LINGO
ORM , MVC , Testing , Mail ,
Generator, RJS, I18n, Template , Engine .....

6. SINATRA LINGO
GET / POST / PUT / DELETE , request
paramenters, response, views , helpers , configure , rack

7. Single file web-app

8. Single file web-app

9. Hello World!

10. HTTP actions

11. Routes

12. Views

13. Helpers

14. Filter

15. Configure

17. • Web Service / API
• Tiny Web Application
• Rails Metal

18. Web Service / API

19. Requests per second: 81.09 [#/sec] (mean)
Time per request: 12.332 [ms] (mean) Rails action
Requests per second:450.56 [#/sec] (mean) Sinatra
Time per request: 2.219 [ms] (mean)
Ubuntu 8.04, Intel Atom N270 @1.60GHz

20. Tiny Web Application

21. • simple
• cherry pick
• ActiveRecord / Datamapper
• Prototype / jQuery

23. twitter IE6

25. • CodeIgniter - PHP framework
• Twitter API
• LOC : 1000+
• NOT support CJK

26. require 'rubygems'
require 'sinatra'
require 'twitter_search'
get '/' do
@client = TwitterSearch::Client.new 'politweets'
@results = @client.query :q => '@MrIE6'
erb :home
end
10 ..

27. • ORM
• Paginate

28. 40

30. Rails Metal with Sinatra

31. Rack provides a minimal interface
between webservers supporting Ruby and Ruby frameworks
Core Code Middleware Mongrel
rack middleware

34. http Profiling Security Caching
Middleware Middleware Middleware
Handler
Core Code
for Rack

35. $ rake middleware

36. Scaling Rails - Metal
• Rack action
• Sinatra Metal app

37. Performance

38. class OldPollerController < ApplicationController
def poller
render :text => "Hello World!"
end
end
class Poller < Rails::Rack::Metal
def call(env)
if env["PATH_INFO"] =~ /^/poller/
[[200], {"Content-Type" => "text/html"}, "Hello, World!"]
else
[[404], {"Content-Type" => "text/html"}, "Not Found"]
end
end
end
25

39. Requests per second: 81.09 [#/sec] (mean) Rails action
Time per request: 12.332 [x`x] (mean)
Requests per second: 163.75 [#/sec] (mean) Metal + Sinatra
Time per request: 6.107 [ms] (mean)
Ubuntu 8.04, Intel Atom N270 @1.60GHz

40. Q &A

41. Resources
• Scaling Rails : Episode #14 Rack
• RailsCast: Episode #251 Rack Middleware
• Pragprog.com : Classy Web Development
with Sinata
• Github / xdite : tweesage-message-wall