Worked on the redis/go-redis repository to address a critical issue in Sentinel configuration by implementing robust handling for empty addresses. Using Go and backend development expertise, introduced targeted error management that clarifies failure scenarios and reduces unnecessary resource allocations during misconfigurations. Expanded the test suite and added benchmarks to validate the resilience of the new logic, ensuring future reliability. Enhanced code maintainability by applying linter improvements and integrating safety checks to prevent panics in legacy code paths. These changes collectively reduced runtime errors and improved the predictability of deployments relying on redis-go-redis Sentinel integration, with a strong focus on testing.