GraphQL Without Hype

Transcript

1. GraphQL
   WITHOUT HYPE
   szymanskilukasz
   

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2. szymanskilukasz
   REST
   

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   Multiple round trips
   between the client
   and server
   to render single views
   

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    Ad Hoc Endpoints
    

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    Maintaining Versions
    

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    Weakly Typed
    

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    Over Fetching Data
    

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    Documentation ?
    

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    What is GraphQL?
    

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    GraphQL is a query language for APIs
    and a runtime for fulfilling those queries
    with your existing data
    

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    No round trips
    

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    For clients
    

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    Backend ?
    

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    It can be anything
    

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    It can be anything
    

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    How ?
    'resolve' => function ($rootValue, $args, $context) {
    // return something from your existing backend;
    }
    

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    Thanks to resolve()
    we can put GraphQL anywhere
    

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    API for mobile apps
    

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    Internal API
    

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    API for services
    

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    No Versioning
    https://github.com/facebook/graphql/issues/175
    

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32. szymanskilukasz
    Facebook's GraphQL schema
    

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    Facebook's GraphQL schema
    - over 4 years old
    

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    Facebook's GraphQL schema
    - over 4 years old
    - 1,000s of types at this point
    

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35. szymanskilukasz
    Facebook's GraphQL schema
    - over 4 years old
    - 1,000s of types at this point,
    - under active change by 100s of engineers
    

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36. szymanskilukasz
    Facebook's GraphQL schema
    - over 4 years old
    - 1,000s of types at this point,
    - under active change by 100s of engineers
    - has never needed a versioned breaking change
    

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37. szymanskilukasz
    Facebook's GraphQL schema
    - over 4 years old
    - 1,000s of types at this point,
    - under active change by 100s of engineers
    - has never needed a versioned breaking change
    - and still supports 4-year old shipped versions of iOS and
    Android apps (which unfortunately are still being used)
    

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    Strongly Typed / Documentation
    

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    Confession
    

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    Be prepared
    

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    Denial of Service
    

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    Authentication
    Authorization
    

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    N+1 queries
    

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    Monitoring / Debugging
    Tools
    

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    How to
    get started
    

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    Internal API for services
    

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    Demo: echo(message: “”)
    

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50. Demo: echo(message: “”)
    

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    Demo: get User Credits
    

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    Demo: get User Credits
    

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    Demo: Deprecated Fields
    

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    Demo: Deprecated Fields
    

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    Demo: Mutations
    

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    Demo: Mutations
    

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    Public API
    

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    Demo: User Authorization
    

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    Demo: User Authorization
    

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60. szymanskilukasz
    Demo: Performance
    

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61. szymanskilukasz
    Demo: Performance
    

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62. szymanskilukasz
    I just want to have fun
    

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63. http://graphql.org/swapi-graphql/
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64. https://developer.github.com/early-access/graphql/explorer/
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65. https://github.com/chentsulin/awesome-graphql
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66. Łukasz Szymański
    Development Team Lead at
    @szymanskilukasz
    https://www.linkedin.com/in/szymanskilukasz
    https://twitter.com/szymanskilukasz
    https://speakerdeck.com/szymanskilukasz
    szymanskilukasz
    

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