GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. GraphQL provides a complete and understandable description of the data in your API, gives clients the power to ask for exactly what they need and nothing more, makes it easier to evolve APIs over time, and enables powerful developer tools.

Notice

This example is based on a react-redux front-end and an express server

Make sure you got MongoDB installed, and service mongod started

Install packages

npm install

Create sample db

npm run seed

Start server

npm start

A graphql request

open local browser at localhost:3000

or

use command to make a simple request

curl --data "query={user(id:2){id,name,roles{id,name}}}" localhost:3000/graphql