Contributed to the tokio-rs/axum repository by developing a feature that enables limiting the number of concurrent connections accepted by a listener, enhancing resource control and reliability under high load. This work introduced the ListenerExt::limit_connections capability, which enforces per-listener connection caps at the boundary, reducing the risk of resource exhaustion and supporting safer scalability. The implementation leveraged Rust’s asynchronous programming and concurrency control features, integrating seamlessly with the existing ListenerExt API. By focusing on network programming best practices, the contribution improved system stability and predictability, aligning with performance and capacity objectives for scalable web applications built with axum.