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GraphQL by Example (Udemy.com)

Learn GraphQL by writing full-stack JavaScript applications with Node.js, Express, Apollo Server, React, Apollo Client.

Created by: Mirko Nasato

Last updated January 2026

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What you will learn

  • Build a GraphQL server based on NodeJS, Express and Apollo Server
  • Call GraphQL APIs from JavaScript using GraphQL-Request or Apollo Client
  • Handle Authentication/Authorization, Caching, and more
  • Receive real-time updates with GraphQL Subscriptions

How it compares

Against the other 1,182 rated Udemy courses in IT & Software on CourseDuck:

  • Rating4.7 out of 5higher than 86% of them
  • Reviews6,148#90 of 1,183 by number of reviews
  • Length8.3 hourslonger than 64% of them
  • Last updatedJanuary 2026more recently than 62% of them

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Course Description

More and more teams are choosing GraphQL instead of (or along with) REST for their web APIs. GraphQL queries give clients great flexibility in the way they request data from the server, preventing issues such overfetching or underfetching of data, and allowing multiple resources to be retrieved in a single request.

In this course you'll learn how to use GraphQL both on the server side and in client applications through practical examples in the form of full-stack JavaScript applications. You will be introduced to all the main GraphQL concepts like schema definition, Queries, Mutations, and Subscriptions, as well as to solution to common requirements such as handling authentication/authorization and client-side caching.

The examples use Apollo Server with Node.js and Express on the backend and React on the frontend, with GraphQL-Request first, then Apollo Client as GraphQL clients. GraphQL-WS is used for subscriptions.

The aim however is not just to cover specific GraphQL libraries, but to give you a more general understanding of the underlying concepts. For instance, GraphQL client libraries are introduced only after learning how to write a simple client "by hand", to make sure you understand the GraphQL over HTTP format.

This course assumes good knowledge of modern JavaScript, and ideally some familiarity with Node.js/Express and React.

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Instructor Details

Mirko Nasato

Mirko has 20 years of experience developing software for a wide range of companies, from startups to large, high-profile organisations, more recently as Lead Developer and Architect.

He is familiar with a number of programming languages and the full application stack, from backend services to web and mobile apps. Mirko also holds a Postgraduate Diploma in Software Development from the Open University.

He is always keen to learn new technologies and enjoys teaching on Udemy because it gives him the opportunity to share his experience with thousands of other developers.

He runs his consultancy company, Encoded Knowledge Ltd, based in London, U.K.

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Reviews

4.7

6,148 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Laszlo Farkas on 12/29/2025

Giving a nice overview with many tricks and details of how the GraphQL features works. The code was not simple, and sometimes there was a bit "too much" detail of the 3rd party libraries, but it was easy to follow, and they were necessary to understand to know why the apps work.

By Hai Nguyen on 10/28/2025

The course is clear, concise and update to date. You will know how to implement GraphQL for both backend and frontend in a short amount of time compared to other GraphQL courses. But you need to know Javascript, React and Typescript beforehand. The Typescript integration is pure gem.

By Vector on 10/18/2025

This course is pure gem ! Excellently structured, clear explanation, focused on what is really important and without unnecessary prolongation. Yet absolutely nothing is missing here. Instructors like Mr. Nasato should teach everything.

By Anna Zdyb on 9/13/2023

Not knowing much about the topic I was able to learn/understand even the more advanced concepts. Complexity increased gradually. I also like the teaching style, for me it was optimal combination of basic vs. details on the topics. Of course many essential keywords to research on later were given too. I recommend.

By Shantanu Gautam on 7/22/2023

The course was very descriptive and thoroughly explained. I required some help in some issues I faced for which I was almost instantly provided help from the instructor. Would recommend this to anybody looking for learning GraphQL.

By Gero Walther on 2/6/2023

Good course but since I was completely new to this topic I felt like the teacher rushed a bit through the basics especially in the beginning. I feel like he does not explain beginner friendly. Other than that fast response when I got stuck and asked in the Q&A. Overall good course but maybe not in depth enough for me.

By Anonymized User on 4/1/2022

explain excellent. start with simple and very fast, there is a working example. then continue to common challenges. i like it very much. make it simple. i like the example approach, that help to understand. not too much theoretic in the beginning. thanks for a wonderful course.

By Anonymized User on 10/10/2021

I have seen all other courses related to GraphQL and react and no one course could collect the latest information and present in concise and effective manner as you have done. Great job.. I would also see if you have authored other courses in Udemy

By Jerry Yip on 6/14/2021

Great course for learning the latest in Graphql/Apollo, especially for those familiar with React. I took this course after taking Stephen Grider's Modern React and Node w/ React Fullstack courses (which are great btw). I chose this GraphQL course because it uses the latest GraphQL and React best practices including using Apollo-Client and React-Hooks (latter half of course). Furthermore, the course was great because the first half shows you how to implement GraphQL without such shortcuts so you both have a sense of how everything works under the hood as well as depth of understanding for how to implement GraphQL for a variety of implementations. Good, thorough yet succinct course. Also, Mirko was extremely quick in responding to 2 questions I posted which was a pleasant surprise, especially given my issues largely turned out to be due to my own mistakes/misses. Thank you for a great course Mirko!

By Jim Bucciferro on 11/14/2020

Excellent course. Thank you

By Roman Bubnov on 11/14/2020

Good Introduction

By Nesh Nenad Mijailovic on 10/24/2020

very simple and clear

Showing 12 of 199 reviews

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Overall Score : 94 / 100