Agenda
What is GraphQL
GraphQL vs REST
Query, Mutation, Subscription
Fragments
Setting up GraphQL with Apollo
GraphQL is a query language for your API
GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data.
History
- Increased mobile usage creates need for efficient data loading
- Variety of different frontend frameworks and platforms on the client-side
- Fast development speed and expectation for rapid feature development
GraphQL lets you:
- Ask for what you need, get exactly that
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Get many resources in a single request
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Describe what’s possible with a type system
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Evolve your API without versions
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Bring your own data and code
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Move faster with powerful developer tools
REST vs GraphQL
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Describe data requirements
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Display information in the UI
REST vs GraphQL
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Construct and send HTTP request
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Receive and parse server response
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Store data locally
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Display information in the UI
GraphQL(client)
While queries run in parallel, mutations run one after another
GraphQL(server)
Apollo
Useful links
- https://graphql.org/learn/
- https://www.howtographql.com/
- https://www.apollographql.com/docs/
- https://github.com/yuliaHope/rss-graphql-demo