Auto-Reloading Development Server

During development it can be very handy to have cargo automatically recompile the code on changes. This can be accomplished very easily by using cargo-watch.

cargo watch -x 'run --bin app'

Historical Note

An old version of this page recommended using a combination of systemfd and listenfd, but this has many gotchas and was difficult to integrate properly, especially when part of a broader development workflow. We consider cargo-watch to be sufficient for auto-reloading purposes.

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