Worked on enhancing the robustness of registry management within the feast-dev/feast repository, focusing on backend development using Go. Addressed a critical issue by implementing a TTL guard to ensure the registry refresh process is skipped when cache_ttl_seconds is zero or negative, preventing unnecessary operations and potential errors. Developed comprehensive regression tests to verify that the refresh function remains stable under these conditions, thereby improving the reliability of the registry subsystem. This work reduced production risk and contributed to smoother deployment processes. Emphasized thorough testing and careful handling of edge cases, demonstrating strong skills in Go and backend system reliability.