Web
Axum Middleware With Tower Layers and From Fn Compared
Add behavior around every request with Tower layers, or write your own with axum middleware from_fn. See the order layers run in and when to pick each form.
7 min read
Topic
Web
Axum, Actix and Tower in anger: routing, middleware, APIs, and WebAssembly when the code has to run in a browser.
Web
Sharing State Between Axum Handlers With State and Arc
Share a pool, config and caches with Axum's State extractor. Learn why the state must be Clone, when to use Arc and how to mutate shared data safely.
8 min read
Concurrency
Tokio Semaphores for Limiting Concurrency in Rust Services
A Semaphore hands out a fixed number of permits so only N tasks run a section at once. See acquire, owned permits, fairness and common limits to set.
7 min read
Concurrency
Graceful Shutdown in Tokio With Signals and Task Tracking
Shut down a Tokio service cleanly: catch SIGTERM and Ctrl+C, stop accepting work, wait for in flight tasks with TaskTracker, then exit within a deadline.
7 min read
Web
Axum Extractors Explained and the Order That Matters
Handler arguments in Axum are extractors that run in order, and only the last one may consume the request body. Learn the rule and the error it prevents.
8 min read
Web
Axum Routing Explained With Handlers and Responses
Axum routes map a path and method to an async function. Learn path parameters, nesting, fallbacks and the 0.8 syntax change for captures.
7 min read
Editor's pick
WebGuide
An Axum Service You Can Run in Production From Zero
Build a small Axum 0.8 service from an empty crate to something you can deploy: a testable router, one error type, limits and timeouts, tracing, oneshot tests and graceful shutdown on SIGTERM.
17 min read
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