1 unstable release
0.0.1 | Feb 28, 2022 |
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#10 in #tower-layer
13KB
255 lines
Cache layer for tower::Service
s
CacheLayer
is a tower Layer that provides caches for Service
s by using
another service to handle the cache. This allows the usage of asynchronous
and external caches.
Usage
use std::convert::Infallible;
use tower::{ServiceBuilder, service_fn};
use tower_cache::{
CacheLayer,
lru::LruProvider,
};
async fn handler(req: String) -> Result<String, Infallible> {
Ok(req.to_uppercase())
}
// Initialize the cache provider service
let lru_provider = LruProvider::<String, String>::new(20);
// Initialize the service
let my_service = service_fn(handler);
// Wrap the service with CacheLayer.
let my_service = ServiceBuilder::new()
.layer(CacheLayer::<_, String>::new(lru_provider))
.service(handler);
Creating cache providers
A cache provider is a tower::Service
that takes a ProviderRequest
as request and returns a ProviderResponse
.
Dependencies
~2.1–3MB
~55K SLoC