The document discusses the scalability of Ruby on Rails applications in the cloud, emphasizing that proper understanding and implementation can facilitate scaling without upfront hardware costs. It highlights various cloud computing services like Amazon Web Services and other platforms that provide pay-as-you-go models, allowing developers to manage resources efficiently. Additionally, it lists tools, pricing options, and pros and cons of different cloud services tailored for Ruby development.

2. The Future is Now Leveraging the Cloud with Ruby Robert Dempsey Atlantic Dominion Solutions

3. CEO, Atlantic Dominion Solutions Founder, Rails For All Chair, acts_as_conference Co-chair, doterati Membership BA, Computer Science, Rollins MBA Candidate 2009 CSM in-training Robert Dempsey

4. I’m angry

5. Like mad cow angry

6. If I hear this one more time… Rails can’t scale

7. There will be trouble!

8. Ruby on Rails can scale… … if you understand how to scale it.

9. Rails MVC Architecture http://wiki.rubyonrails.org/rails/pages/UnderstandingRailsMVC

10. Rails MVC Overview http://betterexplained.com/articles/intermediate-rails-understanding-models-views-and-controllers/

12. Where the cloud comes in http://betterexplained.com/articles/intermediate-rails-understanding-models-views-and-controllers/

13. I want to… Not have to buy anything Not have to think about resources Servers Storage Easily scale my application

14. What is scalability? “…ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged.” “…it can refer to the capability of a system to increase total throughput under an increased load when resources (typically hardware) are added.” http://en.wikipedia.org/wiki/Scalability

15. Let’s add to that An application and the resources it uses grow as demand increases.

16. What I need… Servers Storage Access to other utilities Do it all without buying anything upfront Do it all with Ruby The cloud!

17. Clusters High-availability (HA) Load-balancing (LB) Grids Life Before The Cloud

18. High-availability cluster

19. Load balancing cluster

20. Grid

21. You can’t buy it on your personal credit card They are trying to sell you hardware There is no API You need to rearchitect your systems for it It takes more than 10 minutes to provision You need to specify the number of machines you want upfront You own all the hardware It’s not a cloud if… http://www.redmonk.com/jgovernor/2008/03/13/15-ways-to-tell-its-not-cloud-computing/

22. Compute resources packaged as a utility Can use clusters and grids Pay-as-you-go model Examples Amazon Web Services - EC2, S3 HP Utility Computing Services Sun Microsystems’ Network.com Utility computing

23. Cloud computing, defined http://www.infoworld.com/article/08/04/07/15FE-cloud-computing-reality_1.html “ A way to increase capacity or add capabilities on the fly without investing in new infrastructure, training new personnel, or licensing new software.” - InfoWorld, April 2008

24. The cloud is all encompassing SaaS Utility computing Web services in the cloud Platform as a services (PaaS) Managed service providers (MSP) Service commerce platforms Internet integration

25. Why is this important? "By 2011, early technology adopters will forgo capital expenditures and instead purchase 40 percent of their IT infrastructure as a service. Increased high-speed bandwidth makes it practical to locate infrastructure at other sites and still receive the same response times. Enterprises believe that as service-oriented architecture (SOA) becomes common, 'cloud computing' will take off, thus untying applications from specific infrastructure.” - Gartner Group

26. No hardware to buy No infrastructure to support Add capability with minimal coding Advantages

27. Options and Pricing Standard EC2 Deployment Recommendations Code Wrap-up Agenda

28. Amazon Web Services Mor.ph RightScale Heroku Joyent Accelerator Vertebra – Engine Yard (Coming Soon) What do we have to work with?

29. PoolParty Scalr ElasticRails WeoCEO DIY Clouds

30. Amazon EC2 $0.10 - $0.80 / compute hour + transfer costs Amazon S3 $0.15 / GB + transfer costs Amazon SQS $0.01 / 10K requests + transfer costs Amazon SimpleDB $0.14 / machine hour + $1.50/GB/month storage + transfer costs Amazon Web Services

31. Pros Pay-as-you-go Use one or many No infrastructure purchases Third-party service providers Cons Need to build reliability yourself Configuration overhead with EC2 Amazon Web Services

32. Morph

33. Pros Pay-as-you-go 10 minutes sign-up to launch, near 0 configuration One click scaling Fully managed and backed-up, HW load balancing Migrations run on deploy Cons No SSH or file-level access Morph

34. RightSite $2500 setup and $500/month RightGrid $2500 setup and $500/month RightScale Premium $2500 setup and $750/month AWS fees RightScale

35. Pros Multitude of configuration options Scale-on-demand capability One-click multi-server deployments Manage everything AWS from single interface Cons Expensive A lot of up-front configuration RightScale

36. Free (for now) Later Based on “work” Ask them ;) Heroku

37. Pros Do everything via the browser Automatic scaling Work locally then deploy Cons Heroku.com domain name Choices are made for you Heroku

38. ½ GiB $75/month 1/8 CPU, 512 MB RAM, 10 GB storage 1 GB $125/month ½ CPU, 1 GB RAM, 15 GB storage 2 GB $250/month 1 CPU, 2 GB RAM, 25GB storage Joyent Accelerator

39. Pros Pay-as-you-go Solid hardware ZFS = scalable storage Cons Call in to scale your app OpenSolaris is fun Not really cloud computing Joyent Accelerator

40. Free (Ruby gem) + AWS PoolParty

41. Pros Easy configuration and deployment Highly configurable EC2 instances Cons Lacking documentation Supports only Ubuntu EC2 AMIs Not production ready (June 20) PoolParty

42. Free (Google code) + AWS $50/month + AWS Scalr

43. Pros Free for base code Configurable auto-scaling of everything Configurable automatic db backups Cons Have to use their base AMI Scalr

44. Free Community Edition + AWS $10/month Personal Edition + AWS ElasticRails

45. Pros Save VM for a virtual environment (VMware) Build a custom bundle and deploy to EC2 GUI management console Cons Elastic server = application stack Community edition = non-commercial use Rails 2.0.2 is the latest ElasticRails

46. Free + AWS WeoCEO

47. Pros Automatic load balancing Automatic scaling Set min and max servers Cons Command-line setup No specific documentation on using Rails WeoCEO

48. Options and Pricing Standard EC2 Deployment Recommendations Code Wrap-up Agenda

49. Standard EC2 Deploy

50. Standard EC2 Deploy Small instance: $2.40/day 2 x LB $144 2 x HTTP $144 2 x DB $144 Total $432/month

51. Options and Pricing Standard EC2 Deployment Recommendations Code Wrap-up Agenda

52. Developer or sys admin? Pay for it… Morph Scalr RightScale Recommendations

53. Options and Pricing Standard EC2 Deployment Recommendations Code Books Articles Gems Plugins Code Wrap-up Agenda

54. Books

55. AWS Articles Introduction to AWS for Ruby Developers Economical Use of Amazon S3 with Ruby on Rails Using Amazon S3, EC2, SQS, Lucene, and Ruby for Web Spidering Sample Applications in Ruby for Amazon FPS

56. Gems right_aws EC2, S3, SQS, SimpleDB right_http_connection remit poolparty

57. Plugins S3 paperclip attachment_fu backup_fu SimpleDB AWS SDB Proxy SQS ActiveMessaging

58. S3: Using Paperclip right_aws right_http_connection Gems to use

59. S3: Using Paperclip class Product < ActiveRecord::Base has_attached_file :photo, :styles => { :medium => “300x300”, :thumb => “100x100” }, :storage => :s3, :s3_credentials => “#{RAILS_ROOT}/config/s3.yml”, :path => “:attachment/:id/:style.:extension”, :bucket => ‘introtoruby_development’ end app/models/product.rb

60. SQS sqs Gems to use

61. SQS Require ‘rubygems’ Require ‘sqs’ SQS.access_key_id = ‘YOUR_ACCESS_KEY_ID’ SQS.secret_access_key = ‘YOUR_SECRET_ACCESS_KEY’ config/environment.rb

62. SQS # Get an SQS queue q = SQS.get_queue ”my_sqs_queue_name” # Send a message made up of the job id q.send_message “#{self.id}” # Grab a job from the queue message = queue.receive_message # Delete the job from the queue message.delete app/models/job.rb

63. SQS: right_aws gem # Create a queue sqs = RightAws::SqsGen2.new(aws_access_key_id, aws_secret_access_key) queue1 = sqs.queue('my_awesome_queue') # Create a second queue queue2 = RightAws::SqsGen2::Queue.create(sqs, ‘ my_cool_queue’, true) puts queue2.size Gems used: right_aws, right_http_connection

64. SQS: right_aws gem # Pull a message from the queue and make it invisible message1 = queue2.receive message1.visibility = 0 puts message1 # Clear the queue, add a message, delete first accessible msg queue2.clear(true) queue2.send_message(‘Ola-la!’) message2 = queue2.pop

65. SimpleDB: right_aws gem # Create an instance of the SDB interface sdb = RightAws::SdbInterface.new( :server => ‘sdb.amazonaws.com’ :port => 443 :protocol => ‘https’ :signature_version => '0’ :multi_thread => true|false :logger => Logger Object) Gems used: right_aws, right_http_connection

66. SimpleDB: right_aws gem # Create a new domain sdb.create_domain(‘toys’) # Delete a domain Sdb.delete_domain(‘toys’) # Create and save attributes for Jon and Silvia attributes = {} attributes['Jon'] = %w{ car beer } attributes['Silvia'] = %w{ beetle rolling_pin kids } sdb.put_attributes ‘family’, ‘toys’

67. SimpleDB: right_aws gem # Get attributes sdb.get_attributes(‘family’, ‘toys’) # Get attributes only for cat sdb.get_attributes(‘family’, ‘toys’, ‘cat’) # Query query = ”[‘cat’ = ‘claw’]” sdb.query(‘family’, query) # Query returning 10 items sdb.query(‘family’, query, 10)

68. Options and Pricing Standard EC2 Deployment Recommendations Code Wrap-up Agenda

70. THANK YOU

71. Questions? ADS http ://www.techcfl.com Blog http://rorblog.techcfl.com Twitter http://www.twitter.com/rdempsey LinkedIn http://www.linkedin.com/in/techcfl