Error Handling in Axum

Axum is a web framework for Rust built on top of Tokio and Hyper. One of its standout features is a simple and predictable error handling model — once you understand the pattern, writing safe, expressive web servers becomes surprisingly natural. This guide walks you from the very basics to real-world patterns you'll use in production. The Core Idea: Errors Must Become Responses In Axum, every error must eventually become an HTTP response . There is no unhandled-exception mechanism. If something