Worked on backend stability for the yhyang201/sglang repository, focusing on resolving a conflict between speculative decoding and the ROCm radix cache. Addressed this by implementing logic in Python to automatically disable the radix cache when speculative decoding is active, ensuring smoother server argument configuration for ROCm environments. Maintained robust error handling across different deployment scenarios to minimize regressions and preserve system safety. This targeted bug fix improved reliability and reduced runtime errors, leading to higher system uptime and a better user experience. The work demonstrated a strong grasp of backend development and careful attention to cross-environment compatibility and stability.