Developed a key feature for the vllm-project/production-stack repository, focusing on enhancing routing distribution and system reliability. Introduced a configurable prefix-min-match-length threshold to the PrefixAwareRouter, allowing the system to fall back to QPS-based routing when the longest prefix match is below the specified length. This approach mitigated load hotspots caused by long shared prefixes, such as common system prompts, while maintaining backward compatibility by default. The work was implemented using Python and YAML, leveraging backend development, routing algorithms, and unit testing skills. The solution provided operators with an easy upgrade path and addressed a core routing challenge.