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Taming monolithic monsters
- 2. Need help building something ambitious? gavinjoyce@gmail.com
- 4. What’s the Problem? ● Rails apps don’t scale
- 5. What’s the Problem? ● Rails apps don’t scale ● Rails apps do scale:
- 6. What’s the Problem? ● Rails apps don’t scale ● Rails apps do scale: ○ Web servers are cheap
- 7. What’s the Problem? ● Rails apps don’t scale ● Rails apps do scale: ○ Web servers are cheap ○ Engineers are expensive
- 8. What’s the Problem? ● Rails apps don’t scale ● Rails apps do scale: ○ Web servers are cheap ○ Engineers are expensive ○ Rails is optimised to save engineering time
- 9. What’s the Problem? ● Rails apps don’t scale ● Rails apps do scale: ○ Web servers are cheap ○ Engineers are expensive ○ Rails is optimised to save engineering time ○ not the full story...
- 10. What’s the Problem? In my experience: ● Large rails apps are hard to scale
- 11. What’s the Problem? In my experience: ● Large rails apps are hard to scale: ○ Team size
- 12. What’s the Problem? In my experience: ● Large rails apps are hard to scale: ○ Team size ■ code base complexity
- 13. What’s the Problem? In my experience: ● Large rails apps are hard to scale: ○ Team size ■ code base complexity ■ brittleness due to tight coupling between models
- 14. What’s the Problem? In my experience: ● Large rails apps are hard to scale: ○ Team size ■ code base complexity ■ brittleness due to tight coupling between models ○ TDD feedback time
- 16. Mutations Gem github.com/cypriss/mutations ● Compose your business logic into commands that sanitize and validate input
- 17. Mutations Gem github.com/cypriss/mutations ● Compose your business logic into commands that sanitize and validate input ● Write safe, reusable, and maintainable code for Ruby and Rails apps
- 18. Defining a Mutations Command
- 19. Using a Mutations Command
- 20. demo - simple mutation command
- 21. Mutations in your app
- 22. Mutations in your app ● create an internal api
- 23. Mutations in your app ● create an internal api ○ logically isolate key business logic
- 27. Mutations in RestPack ● Services are packaged as gems
- 28. Mutations in RestPack ● Services are packaged as gems: ○ Commands
- 29. Mutations in RestPack ● Services are packaged as gems: ○ Commands ○ Serialisers
- 30. Mutations in RestPack ● Services are packaged as gems: ○ Commands ○ Serialisers ○ Models
- 31. Mutations in RestPack ● Services are packaged as gems: ○ Commands ○ Serialisers ○ Models ○ Migrations
- 32. Mutations in RestPack ● Services are packaged as gems: ○ Commands ○ Serialisers ○ Models ○ Migrations ○ Specs
- 33. Mutations in RestPack ● Services are packaged as gems: ○ Commands ○ Serialisers ○ Models ○ Migrations ○ Specs ● Commands are the public interface
- 34. Mutations in RestPack ● Services are packaged as gems: ○ Commands ○ Serialisers ○ Models ○ Migrations ○ Specs ● Commands are the public interface ○ either Ruby or REST
- 35. RestPack Service Gem Anatomy
- 36. RestPack Service Gem Anatomy DB
- 37. RestPack Service Gem Anatomy rake restpack:migrate DB
- 38. RestPack Service Gem Anatomy models rake restpack:migrate DB
- 39. RestPack Service Gem Anatomy models ActiveRecord models rake restpack:migrate DB
- 40. RestPack Service Gem Anatomy serialisers models ActiveRecord models rake restpack:migrate DB
- 41. RestPack Service Gem Anatomy serialisers RestPack::Serializer gem models ActiveRecord models rake restpack:migrate DB
- 42. RestPack Service Gem Anatomy commands serialisers RestPack::Serializer gem models ActiveRecord models rake restpack:migrate DB
- 43. RestPack Service Gem Anatomy commands Mutations gem serialisers RestPack::Serializer gem models ActiveRecord models rake restpack:migrate DB
- 44. RestPack Service Gem Anatomy code demo - restpack_activity_service https://github.com/RestPack/restpack_activity_service
- 45. Using service gems from Rails A first attempt….
- 47. actv.io rails app Activity Controller Host Ruby Application Activity Service Gem DB
- 48. actv.io rails app Activity Controller Host Ruby Application Activity Clent Gem Activity Service Gem DB
- 49. actv.io rails app Activity Controller Activity Model Host Ruby Application Activity Clent Gem Activity Service Gem DB
- 50. actv.io rails app Activity Controller Activity Model Host Ruby Application Activity Clent Gem Local Proxy Activity Service Gem DB
- 51. actv.io rails app Host Ruby Application Activity Controller Activity Model Local Proxy Activity Clent Gem API Proxy REST API Activity Service Gem DB
- 52. demo - Rails App
- 53. actv.io rails app Host Ruby Application Activity Controller Activity Model Local Proxy Activity Clent Gem API Proxy REST API Activity Service Gem DB
- 54. No need for Rails, the API is the server application API
- 55. No need for Rails, the API is the server application Android App API
- 56. No need for Rails, the API is the server application Android App iOS App API
- 57. No need for Rails, the API is the server application Web App Android App iOS App API
- 58. No need for Rails, the API is the server application Web App Android App iOS App API ... App ... App ... App
- 59. api.restpack.org
- 65. Apply Security Policy api.restpack.org Job Q DB DB DB DB DB Core Users Groups Account Email Redis
- 67. 3rd Party Applications 3rd Party Applications 3rd Party Applications 3rd Party Applications dashboard.restpack.org Apply Security Policy api.restpack.org Job Q DB DB DB DB DB Core Users Groups Account Email Redis
- 68. demo - Ember.js App
- 69. 1 Application, 1 DB dashboard.restpack.org api.restpack.org Job Q DB Redis
- 70. Many Applications, Many DBs dashboard.restpack.org Apply Security Policy api.restpack.org API API API API API Job Q DB DB DB DB DB Core Users Groups Account Email Redis