February 2020
Intermediate to advanced
404 pages
8h 42m
English
Content preview from Hands-On RESTful Web Services with Go - Second Edition
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GraphQL basics
A GraphQL schema is composed of many building blocks. These building blocks are as follows:
- Types
- Queries
- Functions
- Aliases
- Variables
- Mutations
All these blocks are essential for building a functional GraphQL API. We can divide all of these components into two main categories:
- Schemas and types
- Queries and mutations
There are many features in each category, but we will only discuss the most important ones that can help you understand GraphQL. Let's take an example of fetching a user record from an API.
Note: All the snippets we show from here on are present in the intro directory of Chapter10, GraphQL and Go.
A typical GraphQL schema looks like this:
type Query { user: Person}type Person { name: String, address: [Address] ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.