Djangocong Apps to Services

Transcript

1. 1.

   Django Apps to Services

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   Craig Kerstiens @craigkerstiens work at @heroku

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   Project App A collection of configuration and apps for a

   particular Website. (per Django Project) Django
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   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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   Within Django

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   Project Within Django

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   Project App Within Django

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   Project App App Within Django

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   Project App App App Within Django

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    Project App App App Tickets FAQ FaqCreator Within Django

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    REUSABILITY means faster features due to DRY (Don’t Repeat Yourself)

    REUSABILITY does not always mean SCALABILITY or MAINTAINABILITY
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    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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    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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    None
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    Tech imitate Teams Project App App App Tickets FAQ FaqCreator

    Company Support Knowledge Base
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    App App Support Knowledge Base Teams Grow

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    App App Support Knowledge Base Billing Teams Grow

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    App App Support Knowledge Base Billing Marketing Teams Grow

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    App App Support Knowledge Base Billing Marketing Analytics Mobile API

    Front End Social Teams Grow
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    App App App Support Knowledge Base Billing Apps Grow Marketing

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

    Front End Social 9 Apps 1 Codebase
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    Defined contract for communicating Service

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    Defined contract for communicating Service $ curl -O $FAQ_API/create/ -X

    “question=my\ question source=123”
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    In Python

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    In Python data = { ‘question’: “my question”, ‘source’: 123

    } requests.POST(os.environ[‘FAQ_API’] + ‘/create/’, data=data)
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    None
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    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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    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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    Version Bump

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    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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    Whats a service Provider API_HOST= http://127.0.0.1

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

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    Whats a service Provider Endpoint API_HOST= http://127.0.0.1 /v1/create/ Contract {

    ‘question’: ‘foo bar’, ‘source’: 123 }
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    Service App

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    Service App Models Views URLs Provider Endpoint Contract

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    A SERVICE means REUSABILITY and enables SCALABILITY and MAINTAINABILITY

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    A SERVICE means REUSABILITY and enables SCALABILITY and MAINTAINABILITY

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