http-cache

A caching middleware that follows HTTP caching rules, thanks to http-cache-semantics. By default, it uses cacache as the backend cache manager.

How do I use this?

Likely you won't! At least not directly. Unless you are looking to implement a custom backend cache manager or client middleware you'll probably want to pull in one of the existing client implementations instead. See the Provided Client Implementations section below.

Minimum Supported Rust Version (MSRV)

1.85.0

Install

With cargo add installed :

cargo add http-cache

Features

The following features are available. By default manager-cacache and url-standard are enabled.

• manager-cacache (default): enable cacache, a high-performance disk cache, backend manager.
• manager-moka (disabled): enable moka, a high-performance in-memory cache, backend manager.
• manager-foyer (disabled): enable foyer, a hybrid in-memory + disk cache, backend manager.
• streaming-tokio (disabled): enable streaming cache support with tokio runtime.
• streaming-smol (disabled): enable streaming cache support with smol runtime.
• rate-limiting (disabled): enable rate limiting functionality with governor.
• url-standard (default): enable url for URL parsing.
• url-ada (disabled): enable ada-url for WHATWG-compliant URL parsing (avoids Unicode/IDNA license).
• with-http-types (disabled): enable http-types type conversion support

URL Feature Notes

The url-standard and url-ada features are mutually exclusive - exactly one must be enabled. The url-standard feature uses the url crate which depends on idna (Unicode license). If you need to avoid the Unicode license, use url-ada instead:

[dependencies]
http-cache = { version = "1.0", default-features = false, features = ["manager-cacache", "url-ada"] }

Breaking change for default-features = false users: You must now explicitly enable either url-standard or url-ada.

Documentation

• API Docs

Provided Client Implementations

• Reqwest: See README for more details
• Tower: See README for more details
• Surf: See README for more details
• Ureq: See README for more details

Server-Side Caching Middleware

• Tower Server: See README for more details

Additional Manager Implementations

• quick-cache: See README for more details

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.