Worked on enhancing deployment flexibility in the Mooncake repository by introducing a configurable RDMA QP pkey_index, allowing users to specify partition keys through an environment variable. This feature was implemented in C++ and integrated with the existing GlobalConfig, defaulting to a pkey_index of 0 to maintain backward compatibility during QP initialization. The approach reduced manual configuration and improved multi-tenant isolation by supporting non-default partition keys across diverse environments. Comprehensive unit tests and updated documentation were provided to ensure reliability and ease of use for both operators and developers, demonstrating a focus on robust environment variable management and maintainable code.