During November 2024, sdojjy@qq.com focused on stabilizing core data-pipeline components in the hongyunyan/tigate and pingcap/tiflow repositories. They enhanced lifecycle management by ensuring reliable startup and shutdown processes, improved observability through better logging and error messages, and expanded unit test coverage using Go and mocking techniques. Their work addressed concurrency and state management challenges, particularly around changefeed and stream path handling, while also resolving bugs related to panic scenarios and API processing. By refactoring alerting and error handling logic, sdojjy@qq.com delivered more maintainable backend systems, demonstrating depth in distributed systems, API development, and database replication.