Djangocong Apps to Services

Transcript

1. Django Apps to Services
   

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2. Craig Kerstiens
   @craigkerstiens work at @heroku
   

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3. Project
   App
   A collection of configuration and apps for a
   particular Website.
   (per Django Project)
   Django
   

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4. 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
   

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5. Within Django
   

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6. Project
   Within Django
   

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7. Project
   App
   Within Django
   

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8. Project
   App
   App
   Within Django
   

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9. Project
   App
   App
   App
   Within Django
   

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10. Project
    App
    App
    App
    Tickets
    FAQ
    FaqCreator
    Within Django
    

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11. REUSABILITY means faster features
    due to DRY (Don’t Repeat Yourself)
    REUSABILITY does not always mean
    SCALABILITY or MAINTAINABILITY
    

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12. 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
    

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13. 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
    

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15. Tech imitate Teams
    Project
    App
    App
    App
    Tickets
    FAQ
    FaqCreator
    Company
    Support
    Knowledge Base
    

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16. App
    App
    Support
    Knowledge
    Base
    Teams Grow
    

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17. App
    App
    Support
    Knowledge
    Base
    Billing
    Teams Grow
    

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18. App
    App
    Support
    Knowledge
    Base
    Billing
    Marketing
    Teams Grow
    

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19. App
    App
    Support
    Knowledge
    Base
    Billing
    Marketing
    Analytics
    Mobile
    API
    Front End
    Social
    Teams Grow
    

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20. App
    App
    App
    Support
    Knowledge
    Base
    Billing
    Apps Grow
    Marketing
    Analytics
    Mobile
    API
    Front End
    Social
    3 Apps
    

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21. App
    App
    App
    Support
    Knowledge
    Base
    Billing
    Apps Grow
    App
    App
    App
    Marketing
    Analytics
    Mobile
    App
    App
    App
    API
    Front End
    Social
    9 Apps
    

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22. Support
    Knowledge
    Base
    Billing
    Apps Grow
    Marketing
    Analytics
    Mobile
    API
    Front End
    Social
    9 Apps
    1 Codebase
    

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23. Defined contract for communicating
    Service
    

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24. Defined contract for communicating
    Service
    $ curl -O $FAQ_API/create/ -X “question=my\ question
    source=123”
    

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25. In Python
    

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26. In Python
    data = {
    ‘question’: “my question”,
    ‘source’: 123
    }
    requests.POST(os.environ[‘FAQ_API’] + ‘/create/’, data=data)
    

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28. Version Bump
    data = {
    ‘question’: “my question”,
    ‘source’: 123,
    ‘related’: [456, 789]
    }
    requests.POST(os.environ[‘FAQ_API’] + ‘/v2/create’, data=data)
    

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29. Version Bump
    data = {
    ‘question’: “my question”,
    ‘source’: 123,
    ‘related’: [456, 789]
    }
    requests.POST(os.environ[‘FAQ_API’] + ‘/v2/create’, data=data)
    

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30. Version Bump
    

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31. 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)
    

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32. Whats a service
    Provider API_HOST= http://127.0.0.1
    

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33. Whats a service
    Provider
    Endpoint
    API_HOST= http://127.0.0.1
    /v1/create/
    

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34. Whats a service
    Provider
    Endpoint
    API_HOST= http://127.0.0.1
    /v1/create/
    Contract {
    ‘question’: ‘foo bar’,
    ‘source’: 123
    }
    

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35. Service
    App
    

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36. Service
    App
    Models
    Views
    URLs
    Provider Endpoint Contract
    

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37. A SERVICE means
    REUSABILITY and
    enables SCALABILITY
    and MAINTAINABILITY
    

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38. A SERVICE means
    REUSABILITY and
    enables SCALABILITY
    and MAINTAINABILITY
    

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39. Fin.
    Resources
    http://bit.ly/djangocong
    http://bit.ly/appstoservices
    http://www.12factor.net
    

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