What is GraphQL? GraphQL is an open‑source query language for APIs and a server‑side runtime. It provides a strongly‑typed schema to define relationships between data, making APIs more …

GraphQL is a query language for your API, and a server-side runtime for executing queries using a type system you define for your data. The GraphQL specification was open-sourced in 2015 …

GraphQL supports three main operation types—queries, mutations, and subscriptions. We have already seen several examples of basic queries in this guide, and on this page, you’ll learn in …

GraphQL allows you to add documentation to the types, fields, and arguments in a schema. In fact, the GraphQL specification encourages you to do this in all cases unless the name of the …

There are many resources available to help you learn GraphQL, including this website. In our documentation, you’ll find a series of articles that explain essential GraphQL concepts and how …

The GraphQL Foundation’s Composite Schema Working Group, which includes engineers from various organizations across the industry including Apollo GraphQL, ChilliCream, Graphile, …

On this page, we’ll explore how clients can subscribe to details of events on a GraphQL server using subscription operations. Many of the features of GraphQL operations that apply to …

Now that we know how to use a GraphQL server to read and write data, we’re ready to learn how to fetch data in real time using subscriptions. You may also wish to learn more about how …

Now that you understand the different phases of a GraphQL request and how responses are provided to clients, head over to the Introspection page to learn about how a GraphQL server …

GraphQL was designed to work with relatively small requests from clients, and was not designed with handling binary data in mind. File uploads, by contrast, typically handle binary data such as …