GraphQL Yoga Setup

1. Introduction

GraphQL Yoga is a fully-featured GraphQL server that allows you to build and manage your APIs easily.

It is built on top of the GraphQL-js library and supports various features out of the box, such as subscriptions and file uploads.

2. Installation

To set up GraphQL Yoga, you need to have Node.js installed on your machine. Follow these steps:

mkdir my-graphql-server && cd my-graphql-server

npm init -y

npm install @graphql-yoga/node

3. Basic Setup

Once you have installed GraphQL Yoga, you can set up a simple server:

const { createYoga } = require('@graphql-yoga/node');
            const { createServer } = require('node:http');

            const yoga = createYoga({
                schema: /* Your GraphQL schema here */,
            });

            const server = createServer(yoga);
            server.listen(4000, () => {
                console.log('Server is running on http://localhost:4000');
            });

This code creates a basic GraphQL server running on port 4000.

4. Creating a Schema

Your GraphQL schema defines the structure of your data and the operations you can perform. Here's a simple schema example:

const { makeExecutableSchema } = require('@graphql-tools/schema');

            const typeDefs = `
                type Query {
                    hello: String
                }
            `;

            const resolvers = {
                Query: {
                    hello: () => 'Hello, world!',
                },
            };

            const schema = makeExecutableSchema({ typeDefs, resolvers });

This schema defines a simple query that returns a greeting.

5. Querying Data

To test your GraphQL API, you can use a tool like Postman or GraphiQL to run queries. Here's an example query:

query {
                hello
            }

Executing this query will return:

{
                "data": {
                    "hello": "Hello, world!"
                }
            }

6. Best Practices

Follow these best practices when working with GraphQL Yoga:

7. FAQ