axum-limit

This crate provides an efficient rate limiting mechanism using token buckets, specifically designed for asynchronous web applications with a strong focus on extractor-based rate limits.

Features

• Configurable rate limits using extractors, allowing for flexible limit strategies per route.
• Supports various time granularities for rate limits (per second, per minute, per hour, and per day).
• Easily integrates with Axum, using extractors to apply rate limits seamlessly within your application routes.
• Utilizes DashMap for concurrent state management across asynchronous tasks.

Example

Here is a basic example showing how to use the crate with Axum routes:

use http::Uri;
use axum_limit::{Limit, LimitState, LimitPerSecond};
use axum::{Router, routing::get, response::IntoResponse};

async fn route_handler(_: LimitPerSecond<5, Uri>) -> impl IntoResponse {
    // Handler logic here, automatically enforcing the rate limit
}

fn main() {
    let _app: Router<()> = Router::new()
        .route("/your_route", get(route_handler))
        .with_state(LimitState::<Uri>::default());
}

This example demonstrates setting up a rate limit of 5 requests per second on a specific route. The Limit extractor automatically enforces these limits based on the incoming requests.

For more comprehensive examples, please check the examples directory in this repository.