Struct RateLimitLayer 

pub struct RateLimitLayer { /* private fields */ }

Tower Layer that applies fixed-window rate limiting per client.

All service clones produced by this layer share the same in-memory counter store via an std::sync::Arc, so the limit is enforced consistently across concurrent requests.

Apply with Axum’s .layer() call. Use RateLimitLayer::default() for 100 req/60 s per X-Forwarded-For IP, or RateLimitLayer::new() to supply a custom RateLimitConfig.

[!NOTE] Requests that carry no extractable key (header absent) pass through uncounted. The counter store grows with the number of unique client keys and is never evicted; for long-running servers with many unique IPs consider restarting periodically or using a shared external store.

Examples

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

let app: Router = Router::new()
    .route("/api", get(|| async { "ok" }))
    .layer(RateLimitLayer::default());

Implementations

impl RateLimitLayer

pub fn new(config: RateLimitConfig) -> RateLimitLayer

Creates a RateLimitLayer from a custom RateLimitConfig.

Trait Implementations

impl Clone for RateLimitLayer

fn clone(&self) -> RateLimitLayer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RateLimitLayer

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for RateLimitLayer

fn default() -> RateLimitLayer

Returns the “default value” for a type.

impl<S> Layer<S> for RateLimitLayer

type Service = RateLimitService<S>

The wrapped service

fn layer(&self, inner: S) -> <RateLimitLayer as Layer<S>>::Service

Wrap the given service with the middleware, returning a new service that has been decorated with the middleware.