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UdemyGraphQL by Example
4.5(6,107)40k studentsALL LEVELSEnglish
Korshub's take
GraphQL Fundamentals Through Full-Stack JavaScript
GraphQL solves a real REST problem: clients request exactly what they need (no overfetching or underfetching) and combine multiple resources in one query. This course teaches you how it actually works by building both server and client applications, starting with the fundamentals before moving to libraries like Apollo.
On the server side, you'll learn schema definition, queries, mutations, and subscriptions using Apollo Server with Node.js and Express. On the frontend, you'll work in React, first writing a simple client "by hand" to understand the GraphQL over HTTP format, then adopting Apollo Client. The course deliberately covers concepts first, so you understand what these libraries are doing under the hood, making you a more effective GraphQL developer regardless of which tools you use.
About this course
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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