Yuw Mao enhanced the reliability of Raft replication in the eBay/HomeStore repository by developing a concurrency-safe pending request counter. Using C++ and leveraging expertise in distributed systems and concurrency, Yuw introduced the init_req_counter class to ensure robust initialization and decrementing of pending_request_num during critical operations such as member replacement and snapshot creation. This change addressed a bug that previously risked dropped or mis-timed requests during leadership transitions, thereby improving cluster stability and consistency guarantees. The work demonstrated a deep understanding of Raft consensus mechanics and maintainable code design, resulting in smoother production behavior for distributed storage systems.