Django Apps to Services

Transcript

1. Django Apps to Services
2. Craig Kerstiens @craigkerstiens work at @heroku
3. Project A collection of configuration and apps for a particular Website. (per Django Project) Django
4. Project App A collection of configuration and apps for a particular Website. (per Django Project) Django
5. Project App A collection of configuration and apps for a particular Website. A web application that does something. I.e. Weblog, Poll, Ticket system (per Django Project) Django
6. Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table
7. Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table
8. Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table Table App
9. Within Django
10. Project Within Django
11. Project App App App Within Django
12. Project App App App Tickets FAQ FaqCreator Within Django
13. Project App App App Tickets FAQ FaqCreator Within Django cd myproject && find . manage.py requirements.txt settings.py urls.py ./faq/admin.py ./faq/forms.py ./faq/models.py ./faq/urls.py ./faq/views.py ./faqcreator/admin.py ./faqcreator/forms.py ./faqcreator/models.py ./faqcreator/urls.py ./faqcreator/views.py ./tickets/admin.py ./tickets/forms.py ./tickets/models.py ./tickets/urls.py ./tickets/views.py
14. Reusability
15. cd myproject && find . Reusability
16. cd myproject && find . manage.py requirements.txt settings.py urls.py ./faq/admin.py ./faq/forms.py ./faq/models.py ./faq/urls.py ./faq/views.py ./faqcreator/admin.py ./faqcreator/forms.py ./faqcreator/models.py ./faqcreator/urls.py ./faqcreator/views.py ./tickets/admin.py ./tickets/forms.py ./tickets/models.py ./tickets/urls.py ./tickets/views.py Reusability
17. cd myproject && find . cd myproject && find . manage.py requirements.txt settings.py urls.py ./faq/admin.py ./faq/forms.py ./faq/models.py ./faq/urls.py ./faq/views.py ./faqcreator/admin.py ./faqcreator/forms.py ./faqcreator/models.py ./faqcreator/urls.py ./faqcreator/views.py ./tickets/admin.py ./tickets/forms.py ./tickets/models.py ./tickets/urls.py ./tickets/views.py --> Reusability
18. cd myproject && find . manage.py requirements.txt settings.py urls.py cd myproject && find . manage.py requirements.txt settings.py urls.py ./faq/admin.py ./faq/forms.py ./faq/models.py ./faq/urls.py ./faq/views.py ./faqcreator/admin.py ./faqcreator/forms.py ./faqcreator/models.py ./faqcreator/urls.py ./faqcreator/views.py ./tickets/admin.py ./tickets/forms.py ./tickets/models.py ./tickets/urls.py ./tickets/views.py --> Reusability
19. cd myproject && find . manage.py requirements.txt settings.py urls.py cat myproject/requirements.txt cd myproject && find . manage.py requirements.txt settings.py urls.py ./faq/admin.py ./faq/forms.py ./faq/models.py ./faq/urls.py ./faq/views.py ./faqcreator/admin.py ./faqcreator/forms.py ./faqcreator/models.py ./faqcreator/urls.py ./faqcreator/views.py ./tickets/admin.py ./tickets/forms.py ./tickets/models.py ./tickets/urls.py ./tickets/views.py --> Reusability
20. cd myproject && find . manage.py requirements.txt settings.py urls.py cat myproject/requirements.txt faq==0.1 faqcreator==0.1 tickets==0.1 cd myproject && find . manage.py requirements.txt settings.py urls.py ./faq/admin.py ./faq/forms.py ./faq/models.py ./faq/urls.py ./faq/views.py ./faqcreator/admin.py ./faqcreator/forms.py ./faqcreator/models.py ./faqcreator/urls.py ./faqcreator/views.py ./tickets/admin.py ./tickets/forms.py ./tickets/models.py ./tickets/urls.py ./tickets/views.py --> Reusability
22. REUSABILITY means faster features due to DRY (Don’t Repeat Yourself)
23. REUSABILITY means faster features due to DRY (Don’t Repeat Yourself) REUSABILITY does not always mean SCALABILITY or MAINTAINABILITY
24. REUSABILITY means faster features due to DRY (Don’t Repeat Yourself) REUSABILITY does not always mean SCALABILITY or MAINTAINABILITY
25. Project App A collection of configuration and apps for a particular Website. A web application that does something. I.e. Weblog, Poll, Ticket system (per Django Project) Django
26. Project App A collection of configuration and apps for a particular Website. A web application that does something. I.e. Weblog, Poll, Ticket system (per Django Project) Django
27. Project App A collection of configuration and apps for a particular Website. A web application that does something. I.e. Weblog, Poll, Ticket system Django Service Method of communication over the web. Web APIs allow combination of multiple services
29. Tech imitate Teams Project App App App Tickets FAQ FaqCreator Company Support Knowledge Base
30. Support Knowledge Base Teams
31. App App Support Knowledge Base Teams Grow
32. App App Support Knowledge Base Billing Teams Grow
33. App App Support Knowledge Base Billing Marketing Teams Grow
34. App App Support Knowledge Base Billing Marketing Analytics Mobile API Front End Social Teams Grow
35. App App App Support Knowledge Base Billing Apps Grow Marketing Analytics Mobile API Front End Social 3 Apps
36. App App App Support Knowledge Base Billing Apps Grow App App App Marketing Analytics Mobile App App App API Front End Social 9 Apps
37. Support Knowledge Base Billing Apps Grow Marketing Analytics Mobile API Front End Social 9 Apps 1 Codebase
38. SOA To the Rescue
39. SOA To the Rescue
40. SOA To the Rescue
41. Defined contract for communicating Service
42. Defined contract for communicating Service $ curl -O $FAQ_API/create/ -X “question=my\ question source=123”
43. In Python
44. In Python data = { ‘question’: “my question”, ‘source’: 123 } requests.POST(os.environ[‘FAQ_API’] + ‘/create/’, data=data)
45. Version Bump data = { ‘question’: “my question”, ‘source’: 123, ‘related’: [456, 789] } requests.POST(os.environ[‘FAQ_API’] + ‘/v2/create’, data=data)
46. Version Bump data = { ‘question’: “my question”, ‘source’: 123, ‘related’: [456, 789] } requests.POST(os.environ[‘FAQ_API’] + ‘/v2/create’, data=data)
47. Version Bump data = { ‘question’: “my question”, ‘source’: 123, ‘related’: [456, 789] } requests.POST(os.environ[‘FAQ_API’] + ‘/v2/create’, data=data) STILL VALID requests.POST(os.environ[‘FAQ_API’] + ‘/v1/create’, data=data)
48. What’s a service Provider API_HOST= http://127.0.0.1
49. What’s a service Provider Endpoint API_HOST= http://127.0.0.1 /v1/create/
50. What’s a service Provider Endpoint API_HOST= http://127.0.0.1 /v1/create/ Contract { ‘question’: ‘foo bar’, ‘source’: 123 }
51. Service App
52. Service App Models Views URLs Provider Endpoint Contract
53. A SERVICE means REUSABILITY and enables SCALABILITY and MAINTAINABILITY
54. A SERVICE means REUSABILITY and enables SCALABILITY and MAINTAINABILITY
55. In the real world
56. In the real world
57. In the real world Install Sentry
58. In the real world Install Sentry Send lots of data
59. In the real world Install Sentry Send lots of data ...........
60. In the real world Install Sentry Send lots of data ........... Crash sentry
61. In the real world Install Sentry Send lots of data ........... Crash sentry ...........
62. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry
63. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry ...........
64. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry ........... Some time later, scale the app you build
65. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry ........... Some time later, scale the app you build VS
66. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry ........... Some time later, scale the app you build Install Sentry VS
67. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry ........... Some time later, scale the app you build Install Sentry Send lots of data to Sentry Service VS
68. In the real world Install Sentry Send lots of data ........... Crash sentry ........... Scale sentry ........... Some time later, scale the app you build Install Sentry Send lots of data to Sentry Service Let David Cramer scale Sentry VS
69. App App App Support Knowledge Base Billing Where to Start App App App Marketing Analytics Mobile App App App API Front End Social
70. App App Support Knowledge Base Billing Where to Start App Marketing Analytics Mobile App API Front End Social
79. Service App
80. Service App Models Views URLs Provider Endpoint Contract
81. Take aways
82. Take aways 1. Start non-critical (Cheat) 2. Create services where theres pain 3. Start small
83. Fin. Resources http://www.craigkerstiens.com http://bit.ly/djangoappstoservices http://www.12factor.net