Kamisama focused on enhancing the reliability of time-based expiration commands in the DiceDB/dice repository. They developed integration tests for the EXPIRE and EXPIREAT commands, targeting improved robustness and validation of expiration logic. Using Go for backend development and testing, Kamisama expanded error handling to address edge cases and reinforced the expiration pathway against potential production issues. Their work strengthened the test suite and improved CI readiness, enabling safer iterative deployments. By deepening coverage and validation for expiration times, Kamisama contributed to a more resilient backend system, ensuring that expiration features behave predictably under a variety of real-world scenarios.