Por que roda Ruby sobre a Máquina Virtual Java? O que ganhamos rodando aplicações Rails em cima da máquina virtual Java?

1. JRuby on
Rails
fabio.kung@caelum.com.br
Monday, March 2, 2009

2. http://www.robert-tolksdorf.de/vmlanguages.html
Monday, March 2, 2009

3. DSLs
Monday, March 2, 2009

4. DSLs
Externa
Interna (host)
Monday, March 2, 2009

5. HAPPY INTERNATIONAL
INVOKEDYNAMIC DAY
JSR-292
http://openjdk.java.net/projects/mlvm/
Monday, March 2, 2009

6. Monday, March 2, 2009

7. Mas e por que
Java?
“por que?”
Monday, March 2, 2009

8. Memória
Heap
objeto
objeto
objeto
objeto
objeto
objeto
objeto
Monday, March 2, 2009

9. Memória
Heap
objeto
objeto
objeto
objeto
objeto
objeto
objeto
Monday, March 2, 2009

10. Memória
Heap
objeto
objeto
objeto
objeto
objeto
objeto
objeto
Monday, March 2, 2009

11. Memória
Heap
objeto
objeto
objeto
objeto
objeto
objeto
objeto
Monday, March 2, 2009

12. Memória
Heap
objeto
objeto
objeto
objeto
objeto
objeto
objeto
Monday, March 2, 2009

13. 95% dos
objetos tem vida
curta
Monday, March 2, 2009

14. Mortalidade Infantil
Memória Heap
Eden Tenured
Monday, March 2, 2009

15. Mortalidade Infantil
Memória Heap
Eden Tenured
Monday, March 2, 2009

16. Mortalidade Infantil
Memória Heap
Eden Tenured
objeto
objeto
objeto
objeto
Monday, March 2, 2009

17. Mortalidade Infantil
Memória Heap
Eden Tenured
objeto
objeto
objeto
objeto
Monday, March 2, 2009

18. Mortalidade Infantil
Memória Heap
Eden Tenured
objeto
objeto
objeto
objeto
Monday, March 2, 2009

19. Flexibilidade
• Serial
• ParNew
• Parallel Scavenge
• Serial Old
• CMS
• Parallel Old
• G1
http://blogs.sun.com/jonthecollector/entry/our_collectors
Monday, March 2, 2009

20. Ea
performance?
Monday, March 2, 2009

21. http://headius.blogspot.com/2008/02/jruby-rc2-released-whats-next.html
JRuby's performance
regularly exceeds Ruby
1.8.6, and in many cases has
started to exceed Ruby 1.9
http://www.flickr.com/photos/diathesis/2115578333/
Monday, March 2, 2009

22. JIT Compiler
Monday, March 2, 2009

23. Startup
• -X:bootclasspath
• Nailgun:
http://www.martiansoftware.com/nailgun/
Monday, March 2, 2009

24. Startup
• -X:bootclasspath
• Nailgun:
http://www.martiansoftware.com/nailgun/
Nailgun
tcp/ip
Client
Nailgun
tcp/ip JVM Server
Client
Nailgun
tcp/ip
Client
Monday, March 2, 2009

25. Rails não
escala!
Monday, March 2, 2009

26. http://www.akitaonrails.com/2008/4/19/di-rio-de-bordo-do-fisl-9
Sim! Rails
escala!
http://picasaweb.google.com/leo.torres84/FISL2008
Monday, March 2, 2009

27. Ruby on Rails
http WebServer Rails
CGI
“como?”
Monday, March 2, 2009

28. Ruby on Rails
Rails
CGI
http WebServer Rails
CGI
CGI Rails
“como?”
Monday, March 2, 2009

29. Ruby on Rails
Proxy Reverso
Mongrel
http / http Rails
Load Balancer
Monday, March 2, 2009

30. Ruby on Rails
Mongrel
http Rails
Proxy Reverso Mongrel
http / http Rails
Load Balancer
Mongrel
http
Rails
Monday, March 2, 2009

31. JRuby on Rails
container
http Servlet
Monday, March 2, 2009

32. JRuby on Rails
container
Thread
Thread
Thread
http Servlet
Thread
Thread
Monday, March 2, 2009

33. JRuby on Rails
container
Thread
Thread
Rails
Thread
http Servlet
(JRuby)
Thread
Thread
Monday, March 2, 2009

34. JRuby on Rails
container
Rails
Thread
(JRuby)
Thread
Rails
Thread
http Servlet
(JRuby)
Thread
Rails
Thread
(JRuby)
Monday, March 2, 2009

35. JRuby on Rails
container
Rails
Thread
(JRuby)
Thread
Goldspike Rails
Thread
http Servlet
(JRuby)
http://wiki.jruby.org/wiki/Goldspike
Thread
Rails
Thread
(JRuby)
Monday, March 2, 2009

36. JRuby Rack
Rails
Thread rack
(JRuby)
Thread
Filter
Rails
Thread
http Servlet rack
JRuby (JRuby)
Rack
Thread
Rails
Thread rack
(JRuby)
Monday, March 2, 2009

37. JRuby Rack
Rails
Thread rack
(JRuby)
Thread
Merb?
Filter
Rails
Thread
http Servlet rack
JRuby (JRuby)
Rack
http://merbivore.com/
Thread
Rails
Thread rack
(JRuby)
Monday, March 2, 2009

38. I agree, the
memory situation
is not the best
but compared to
MRI, JRuby deployments are
actually favorable. We're seeing
around 20MB per runtime
in our deployment, ...
http://www.flickr.com/photos/nicksieger
Monday, March 2, 2009

39. Rails 2.2 is
thread-safe!
http://joshpeek.com/
Monday, March 2, 2009

40. -server -Xmx1024m
httperf --num-conns 100 --rate 10
class HomeController < ApplicationController
def index
render :text =>
quot;<html>fibonnaci(29) = #{fibonacci(29)}</html>quot;
end
private
def fibonacci(number)
return number if number < 2
fibonacci(number - 1) + fibonacci(number - 2)
end
end
Monday, March 2, 2009

41. Tomcat
1 runtime, thread-safe: 176 MB
3 runtimes: 200 MB
5 runtimes: 244 MB
Jetty
1 runtime, thread-safe: 193 MB
3 runtimes: 204 MB
5 runtimes: 245 MB
Glassfish
1 runtime, thread-safe: 315 MB
3 runtimes: 370 MB
5 runtimes: 417 MB
Monday, March 2, 2009

42. jruby -S gem install mongrel
cd railsapp
jruby script/server
Glassfish v3 (gem)
http://wiki.jruby.org/wiki/JRuby_on_Rails_in_GlassFish
jruby -S gem install glassfish
jruby -S glassfish
Monday, March 2, 2009

43. Warbler
http://wiki.jruby.org/wiki/Warbler
jruby -S gem install warbler
cd railsapp
jruby -S warble
Monday, March 2, 2009

44. Monday, March 2, 2009

45. jruby -S gem install jetty-rails
cd railsapp
jruby -S jetty_rails
http://jetty-rails.rubyforge.org/
Monday, March 2, 2009

46. Eu ouvi dizer
que Jruby é
lento!
Monday, March 2, 2009

47. Monday, March 2, 2009

48. httperf --num-conns 2500 --rate 25
guj2: ~20 resp/s
Monday, March 2, 2009

49. httperf --num-conns 8000 --rate 140
Monday, March 2, 2009

50. httperf --num-conns 8000 --rate 140
guj3: ~140 resp/s
vs 20 resp/s
Monday, March 2, 2009

51. “como?”
Monday, March 2, 2009

52. Cache!
Monday, March 2, 2009

53. Cache!
container
Rails
(JRuby) Servlet Context
fragmento
fragmento
Rails fragmento
fragmento
(JRuby)
fragmento
fragmento
fragmento
fragmento
Rails
(JRuby)
Monday, March 2, 2009

54. Conexões ao banco
Monday, March 2, 2009

55. Mongrel
http Rails
Mongrel
http Rails
Proxy Reverso Mongrel
/ http Rails
Load Balancer
Mongrel
http Rails
Mongrel
http Rails
Monday, March 2, 2009

56. Mongrel
http Rails
Mongrel
http Rails
Proxy Reverso Mongrel
/ http Rails
Pool?
Load Balancer
Mongrel
http Rails
Mongrel
http Rails
Monday, March 2, 2009

57. JRuby
Connection Pool
Runtime
JRuby
Runtime
JDBC
JRuby
JRuby Rack Adapter
Runtime
Filter (jndi)
JRuby
Runtime
JRuby
Runtime
Monday, March 2, 2009

58. “” Não importa a tecnologia,
Monday, March 2, 2009

59. “” Não importa a tecnologia,
desde que você a
conheça muito bem!
Monday, March 2, 2009

60. +
Monday, March 2, 2009

61. http://code.google.com/p/activehibernate/
class Person
include Hibernate
primary_key_accessor :id, :long
h_component :address, [[:street,:string], [:city,:string]]
end
Monday, March 2, 2009

62. No. Ribs!
class Blog
Ribs! :table => :fox_blog do |r|
r.id.primary_key!
r.title :column => :blog_title
r.body :column => :content_text
r.something.avoid!
end
end
Monday, March 2, 2009

63. Spring
<beans xmlns=quot;...quot;>
<lang:jruby id=quot;messageServicequot;
script-interfaces=quot;br.com.caelum.Messengerquot;
script-source=quot;classpath:ruby_messenger.rbquot;>
<lang:property name=quot;messagequot; value=quot;Hello World!quot;/>
</lang:jruby>
<bean id=quot;businessLogicquot; class=quot;br.com.caelum.Logicquot;>
<constructor-arg ref=quot;messageServicequot; />
</bean>
</beans>
Monday, March 2, 2009

64. MagLev
Monday, March 2, 2009

65. (J)MagLev
Monday, March 2, 2009

66. Dúvidas?
Obrigado!
fabio.kung@caelum.com.br
Monday, March 2, 2009