n0-watcher

Watchable values.

A Watchable exists to keep track of a value which may change over time. It allows observers to be notified of changes to the value. The aim is to always be aware of the last value, not to observe every value change.

In that way, a Watchable is like a tokio::sync::broadcast::Sender, except that there's no risk of the channel filling up, but instead you might miss items.

See [the module documentation][https://docs.rs/n0-watcher] for more information.

Note to Maintainers: Creating a release

• Make sure to have git-cliff, cargo-release and cargo-semver-checks installed.
• Figure out whether this release is major/minor/patch by running cargo semver-checks check-release --release-type=major/minor/patch and see which one fits
• Use git-cliff to generate the changelog
• Bump the version by major/minor/patch in Cargo.toml and create a release prep PR. Make sure to prefix the release prep PR name with chore(release):.
• Review and merge the PR.
• Run cargo release to check if the release would go through well.
• Run cargo release --execute to run the release

License

Copyright 2025 N0, INC.

This project is 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 this project by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.