JWT Auth Middleware in Axum 0.8 — A Beginner's Guide

If you've ever built a web API, you've probably asked yourself: "How do I make sure only the right people can access certain routes?" That's exactly what authentication middleware solves — and in this guide, you'll learn how to do it in Axum 0.8 using JSON Web Tokens (JWT) . By the end of this article, you'll understand: What JWTs are and why they're useful How middleware works in Axum 0.8 How to write a JWT auth middleware from scratch How to protect routes and pass user data to your handlers L