Axum 0.8.x — Rust Web Framework

Overview

Axum is a ergonomic and modular web framework built with Tokio, Hyper, and Tower. It provides a macro-free API for routing, declarative request parsing via extractors, predictable error handling, and seamless integration with the Tower ecosystem of middleware and services.

Key Principles

• Macro-free routing: Routes are defined via Router::new().route(path, method_router).
• Extractors: Request parsing is done via types implementing FromRequest / FromRequestParts.
• IntoResponse: Anything implementing IntoResponse can be returned from handlers.
• Tower integration: No bespoke middleware system — uses tower::Service and tower::Layer directly.
• Type-safe state: State is threaded through the type system via Router<S> and with_state().
• Infallible by design: All services must have Infallible as their error type — errors become responses.

Skill File Structure