How to Build a REST API with Axum in Rust

Use Axum with Tokio to define routes, handle requests, and run the server asynchronously.

use axum::{routing::get, Router};

#[tokio::main]
async fn main() {
    let app = Router::new().route("/", get(|| async { "Hello, Axum!" }));
    let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
    axum::serve(listener, app).await.unwrap();
}

Axum is a web framework for Rust that lets you build APIs and web servers using asynchronous code. It works with Tokio to handle many connections at once without slowing down. Think of it like a restaurant host who efficiently seats many guests at the same time.