GraphQL vs REST comparison

Introduction

GraphQL and REST are two ways to get data from a server. Knowing their differences helps you choose the best way for your app.

When you want to get exactly the data you need without extra information.

When your app needs to get data from many sources in one request.

When you want a simple way to update or add data with clear rules.

When you want to keep your app fast by reducing the number of server calls.

When you want to use a standard way that many developers already know.

Syntax

GraphQL

GraphQL query example:
{
  user(id: "1") {
    name
    email
  }
}

REST example:
GET /users/1
Response:
{
  "name": "Alice",
  "email": "[e-mail]"
}

GraphQL uses a single endpoint and lets you ask for exactly what you want.

REST uses different URLs (endpoints) for different data and returns fixed data shapes.

Examples

You ask for user data with id 1 and specify you want only name and email.

GraphQL

GraphQL query to get user name and email:
{
  user(id: "1") {
    name
    email
  }
}

You call the URL for user 1 and get all user data the server sends.

GraphQL

REST request to get user data:
GET /users/1

One request gets user name and all their post titles.

GraphQL

GraphQL query to get user and their posts:
{
  user(id: "1") {
    name
    posts {
      title
    }
  }
}

You need two calls: one for user data, one for posts.

GraphQL

REST requests to get user and posts:
GET /users/1
GET /users/1/posts

Sample Program

GraphQL gets user info and posts in one request. REST needs two separate calls.

GraphQL

# GraphQL query example
query GetUserAndPosts {
  user(id: "1") {
    name
    email
    posts {
      title
    }
  }
}

# REST example calls
GET /users/1
GET /users/1/posts

Important Notes

GraphQL reduces the number of requests by letting you ask for nested data in one call.

REST is simpler to cache because each URL is a fixed resource.

GraphQL requires learning its query language, while REST uses standard HTTP methods.

Summary

GraphQL lets you get exactly the data you want in one request.

REST uses multiple URLs and fixed data shapes for each resource.

Choose GraphQL for flexible, efficient data fetching; choose REST for simplicity and caching.