Worked on the ClickHouse/ch-go repository to enhance the reliability of metrics tracking in high-concurrency environments. Addressed a potential data race by introducing a mutex-protected, thread-safe aggregation structure, ensuring accurate and consistent metrics reporting across multiple goroutines. Focused on improving data integrity and observability for production workloads, the solution leveraged Go’s concurrency primitives and metrics tracking techniques to reduce the risk of misleading telemetry. By fixing a critical bug in the metrics tracking path, the work strengthened the foundation for reliable monitoring in multi-threaded contexts, demonstrating a strong grasp of concurrent programming and robust engineering practices in Go.