when I add tower::limit::RateLimitLayer in the route_layer, it shows the trait bound tower::limit::RateLimit<Route<_>>: Clone is not satisfied the trait Clone is not implemented for tower::limit::RateLimit<Route<_>>.

[goldwind-ting]

Version

axum = "0.4.8"
tower = { version = "0.4.12", features = ["timeout", "limit"] }
rustc 1.59.0

Platform

linux ubuntu 21.10

Description

when I use this method to add route_layer, it show follow error:
the trait bound `tower::limit::RateLimit<Route<_>>: Clone` is not satisfied the trait `Clone` is not implemented for `tower::limit::RateLimit<Route<_>>` .

use tower::limit::{ConcurrencyLimitLayer, RateLimitLayer};
Router::new()
        .route("/", get(health))
        .route("/v1/signup", post(signup).route_layer(RateLimitLayer::new(1000, std::time::Duration::from_secs(1))))

but, when I replace RateLimitLayer with ConcurrencyLimitLayer, it is normal.

[davidpdrsn]

Well the compile error has all the info. Services used with axum must be Clone which RateLimit isn't. I'm not familiar with how RateLimit so can't say why that is. You can combine it with BufferLayer to make it Clone.