GraphQL in Action

Reduce bandwidth demands on your APIs by getting only the results you need—all in a single request! The GraphQL query language simplifies interactions with web servers, enabling smarter API queries that can hugely improve the efficiency of data requests. In GraphQL in Action, you’ll learn how to bring those benefits to your own APIs, giving your clients the power to ask for exactly what they need from your server, no more, no less. Practical and example-driven, this book teaches everything you need to get started with GraphQL—from design principles and syntax right through to performance optimization.

About the Technology

The type-based GraphQL query language solves issues with over- or under-fetching data from an API, providing client apps with a predictable interface for interacting with a server. By organizing data as types and fields, GraphQL gives apps complete control over what they’re requesting, including data format, how much to fetch, and more. The result is faster transfer roundtrips, errors that are easier to spot, and virtually no need for clients to write time-consuming manual parsing code. Language-agnostic, GraphQL can be used with any language and incorporated easily into your existing stack.

About the book

In GraphQL in Action, you’ll learn to use GraphQL to simplify interactions with your web servers and improve the performance of your data APIs. Twenty-year web development veteran Samer Buna starts by introducing GraphQL’s unique query-based API paradigm, laying out its unique design concepts and advantages over traditional APIs. From there, you’ll master the GraphQL way of creating APIs for hierarchical data, unlock easy ways to incorporate GraphQL into your existing codebase, and learn how to consume a GraphQL API with queries, mutations, and subscriptions using the GraphQL query language. When you’re done, you’ll have all the skills you need to get started writing and using scalable data APIs with GraphQL. GraphQL is a new paradigm. Are you ready?

What's inside

Define a GraphQL schema for relational and document databases
Query services and other APIs efficiently
Optimize GraphQL resolvers with data caching and batching
Cache a data graph for clients
Design GraphQL fragments that match UI components' data requirements

About the reader

For web developers familiar with building client-server applications.

About the author

Samer Buna has over 20 years of experience in software development including front-ends, back-ends, mobile apps, API design, databases, and scalability. He operates jsComplete.com.

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