Will Wang delivered a performance-focused refactor of the TopicStatsTable component in the mxsm/rocketmq-rust repository, targeting improved memory efficiency and throughput for backend topic statistics gathering. He reengineered the API to return references instead of cloning the offset table, reducing unnecessary allocations and memory usage. By introducing new mutable accessors and conversion helpers, Will enabled more flexible data handling without extra cloning. He also expanded unit tests to validate both borrowed and moved data access, ensuring reliability. This work demonstrated strong proficiency in Rust, particularly with ownership and borrowing, and contributed to more efficient backend development practices within the project.