Kwi developed a resource control feature for the tokio-rs/axum repository, focusing on improving reliability under load by limiting concurrent listener connections. Using Rust and leveraging asynchronous programming and concurrency control, Kwi implemented ListenerExt::limit_connections to cap the number of active connections at the listener level. This approach helps prevent resource exhaustion and aligns with axum’s existing ListenerExt API, supporting safer scalability and predictable performance. The work addressed a specific need for better network resource management in high-traffic scenarios. While the contribution was focused and delivered within a month, it demonstrated depth in network programming and careful integration with existing APIs.