Worked on the apache/shenyu repository to enhance the RequestPlugin by introducing multi-value support for headers, cookies, and query parameters in HTTP requests. This feature allowed the system to append values for duplicate keys rather than replacing them, ensuring all relevant data is preserved during request handling. The implementation involved careful adjustments to add operations, addressing edge cases where multiple values must accumulate correctly. Using Java and the Spring Framework, the developer demonstrated a strong understanding of backend development and HTTP semantics. The changes improved request fidelity, routing accuracy, and downstream interoperability, with clear documentation and collaborative contributions throughout the process.