Lei Huang developed a backend configuration enhancement for the bytedance-iaas/sglang repository, focusing on the Mooncake system. He introduced support for loading backend configuration from JSON files, supplementing existing environment variable and argument-based methods. Using Python and leveraging configuration management skills, Lei updated MooncakeStoreConfig to dynamically read settings from a specified JSON path, allowing runtime changes without manual environment variable updates. He also provided comprehensive Markdown documentation to guide engineering and operations teams in adopting the new approach. This work improved system optimization and configurability, laying a foundation for more automated deployment and consistent backend behavior across environments.