Slides from @arunagw and rockyj.in 's talk from Ruby Conf India 2012.

1. When Ruby
Meets Java
T h e Powe r o f To r q u e b o x
Monday 26 March 12

2. About Us
A r u n A g r aw a l
- 2 8 0 + c o m m i t s i n R a i l s c o re
- M o n g o i d c o re t e a m m e m b e r
- C re a t o r o f o m n i a u t h - t w i t t e r
- C o d i n g o n R a i l s s i n c e 2 0 0 7
- a g r aw a l a r u n . c o m / @ a r u n a g w
R o c k y J a i s w a l
- C o d i n g s i n c e 1 9 9 5
- K n o w b i t s o f J av a & R u b y
- E n j oy u s i n g J R u b y
- ro c k y j . i n / @ w h a t s u p ro c k y
Monday 26 March 12

3. ToDo
- T h e E n t e r p r i s e
- W h a t i s To r q u e b o x
- D e m o
- S c h e d u l i n g
- S e r v i c e s
- M e s s a g i n g
- B a c k g ro u n d a b l e
- C l u s t e r i n g & C a c h i n g
- Pe r f o r m a n c e & S u m m a r y
- S u r p r i s e ! !
Monday 26 March 12

4. Pop Quiz
Coolest Thing
About JRuby(1.6) ?
Monday 26 March 12

5. The Enterprise
Monday 26 March 12

6. What If...
Wouldn’t it be great if
- I could use the power of Java libraries with the ease of
Ruby
- I could use the power of a proven Java Server without
writing any XML
- I could deploy my JRuby app and test it without rebuilding
it and restarting the server
Monday 26 March 12

7. TORQUEBOX
Built upon JBoss 7
Built using JRuby (1.6.7)
Supports Rack, Rails, Sinatra
Everything in one box
Monday 26 March 12

8. TORQUEBOX
Monday 26 March 12

9. Installation
- Download the distribution from torquebox.org
OR
- rvm jruby (1.6.7)
jruby -J-Xmx1024m -S gem install torquebox-server --pre
Monday 26 March 12

10. Our Sh***y App
Monday 26 March 12

11. Scheduling
Uses the battle-tested Quartz Java library
Zero XML
Minimal configuration
No manual thread / process management
No messing with cron
Monday 26 March 12

12. Scheduling
config/torquebox.yml
jobs:
mail_notifier:
job: MailNotifier
cron: '*/5 * * * * ?'
description: Deliver reminder email
class MailNotifier
def run
send_reminder_notification
end
def send_reminder_notification
puts "Sending mail ..."
#UserMailer.reminder_email(User.find(1)).deliver
end
end
Monday 26 March 12

13. Services
Long running services with 3 line configuration
Full access to the Rails environment
JVM threads!
Monday 26 March 12

14. Services
config/torquebox.yml
services:
MessageNotifier:
config:
name: hello
class MessageNotifier
def initialize(opts={})
@name = opts['name']
end
def start
Thread.new { run }
end
def stop
@done = true
end
def run
until @done
do_something #todo
sleep(5)
end
end
end
Monday 26 March 12

15. Messaging
JMS supported out-of-the-box (HornetQ)
Advanced Messaging Queuing Protocol (AMQP)
- RabbitMQ
Supports STOMP out of the box
Monday 26 March 12

16. AMQP
Monday 26 March 12

17. Messaging
In a long running service -
...
def do_something
puts "Checking the queue for messages ..."
bunny = Bunny.new(:logging => false)
# start a communication session with the amqp server
bunny.start
# declare a queue
q = bunny.queue(@name)
# get message from the queue
msg = q.pop[:payload]
puts "This is the message: " + msg.to_s
# close the connection
bunny.stop
end
Monday 26 March 12

18. Backgroundable
As easy as A, B, C ...
class User < ActiveRecord::Base
include TorqueBox::Messaging::Backgroundable
always_background :send_signup_notification
validates_confirmation_of :
...
def send_signup_notification(user)
UserMailer.welcome_email(user).deliver
end
end
Monday 26 March 12

19. Clustering
torquebox run --clustered
Does everything
Servers in a LAN are automatically clustered
Top it up with mod_cluster from JBoss
Monday 26 March 12

20. Caching
TorqueBox provides an implementation of the Rails 3.x
ActiveSupport::Cache::Store that exposes your
application to the Infinispan data grid.
Uses Infinispan by default
Can utilize the cluster with minimal config
Share the cache across the cluster - FTW!
Monday 26 March 12

21. Performance
Monday 26 March 12

22. Performance
Monday 26 March 12

23. Risks
- Version 2 is quite stable but still at RC1
- Upgrading JRuby will not help sometimes
- You will be on a cutting edge open-source
technology but documentation is great, help is
available online and on IRC
Monday 26 March 12

24. Surprise!!!
Monday 26 March 12

25. Questions?
Monday 26 March 12

26. Thank You
Monday 26 March 12