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Add an example showing how to apply `tower::limit::RateLimitLayer` to an axum application. Since `RateLimit` does not implement `Clone`, the example uses `BufferLayer` as a wrapper and `HandleErrorLayer` to convert middleware errors into HTTP responses. Rate limiting is one of the most common requirements for web applications, and this pattern (tower middleware + error handling) comes up frequently in discussions.
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Summary
rate-limitingexample showing how to usetower::limit::RateLimitLayerwith axumBufferLayerwrapping to satisfy axum'sClonerequirement (sinceRateLimitis notClone)HandleErrorLayerto convert middleware errors into HTTP responsesMotivation
Rate limiting is one of the most frequently asked-about patterns for axum, but there is no existing example covering it. This shows the tower-native approach using
ServiceBuilderwith proper error handling.Checklist
cargo build -p example-rate-limitingcargo run -p example-rate-limiting— tested with concurrent requestscargo clippy -p example-rate-limitingcargo fmt --check