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Mercurius is not just another GraphQL library; it is the official, high-performance GraphQL adapter for Fastify. It was built from the ground up to integrate seamlessly with Fastify's core principles, resulting in a developer experience that is as elegant as it is fast.

MongoDB, a powerful, flexible, and scalable document-oriented database. But for Node.js developers, interacting with MongoDB directly can feel verbose and unstructured. This is where Mongoose enters the picture.

Fastify isn't just "another web framework." It's a fundamental reimagining of how a Node.js server should be built, focusing on two key principles: exceptional performance and a superior developer experience through a rigid, scalable architecture.

This article explores the core concepts that make Express so powerful and explains why it continues to be a cornerstone of Node.js development.