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GraphQL is a query language for APIs that provides a more efficient and flexible alternative to REST. Developed by Facebook, it allows clients to request exactly the data they need, no more and no less, in a single request.
In this unit, you’ll learn the fundamentals of GraphQL. We’ll cover what GraphQL is and how it compares to REST APIs, setting up a GraphQL server with Node.js and Express, using Apollo Client for frontend applications, and implementing authentication with JWT and cookies.
GraphQL’s type system and introspection capabilities make it particularly powerful for complex applications where different clients need different data, and its developer experience has made it increasingly popular in modern web development.