The document discusses the scaling journey of a PHP legacy application over three years, as it migrated to Ruby on Rails, AWS automation, and a service-oriented architecture. In year 1, the application was desktop-only and served a few shopping centers with scalability issues. In year 2, it migrated to Rails, deployment automation, and AWS, but still faced scaling problems. In year 3, it underwent an architecture overhaul with autoscaling, multiple services, self-service capabilities, and easy rollbacks.

1. Tis The Season
To Scale
@jrcryer
Kevin Dooley - Dickens Christmas Village 2012 - Little Shop on the Corner
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2. Overview

3. Traffic

4. Year 1

5. Year 1
• PHP legacy application, no framework
• Desktop only
• Served a few shopping centres
• Issues raised
• VPS

6. Year 2

7. Year 2
• Ruby on Rails application
• Automated Deployment
• Migration to AWS
• Issues with Scalability

8. Year 3

9. Year 3

10. Year 3

11. Year 3

12. Year 3
• Architecture overhaul
• Autoscaling
• Multiple services
• Self servicing
• Easy Rollback

13. The Stats

14. Next Steps
• CloudFormation
• CodeDeploy
• Supporting Services