Module throttle 

The throttle middleware.

let cache = CacheStore::from_config(&config)?;
router.group("/api", |r| {
    r.get("/search", search);
})
.middleware(Throttle::per_minute(&cache, 60));

Every response carries X-RateLimit-Limit and X-RateLimit-Remaining, so a client can slow itself down before it is refused. A refused request gets 429 with Retry-After as well — the one header that actually tells a well-behaved client what to do.

Structs

Throttle

Limits how often one client may hit the routes it guards.