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 flexible and predictable.

Get practical tips for improving GraphQL performance — from preventing N+1 problems to monitoring and compression. Protect your GraphQL API with best practices for query limits, input validation, …

When creating a GraphQL document we always start with a root operation type (the Query Object type for this example) because it serves as an entry point to the API. From there we must specify the …

Introduction to GraphQL Learn about GraphQL, how it works, and how to use it GraphQL is a query language for your API, and a server-side runtime for executing queries using a type system you …

Schemas and Types Learn about the different elements of the GraphQL type system The GraphQL type system describes what data can be queried from the API. The collection of those capabilities is …

For more practical guides, visit the How to GraphQL fullstack tutorial website. We also have a free online course with edX, Exploring GraphQL: A Query Language for APIs. Before you start your learning …

Serving over HTTP Respond to GraphQL requests using an HTTP server The GraphQL specification doesn’t require particular client-server protocols when sending API requests and responses, but …

Most of the security concerns associated with GraphQL are typical for any API or service. A few examples: SQL injections, Denial of Service (DoS) attacks, or someone abusing flawed authentication.

Insomnia is an open-source, cross-platform API Client for GraphQL, REST, and gRPC. Insomnia combines an easy-to-use interface with advanced functionality like authentication helpers, code …

Sep 8, 2025 · Expressiveness for API consumers: Developers use GraphQL because it’s intuitive, flexible, and powerful. This edition makes the language even more productive and expressive, …