Mustafa developed a configurable concurrency control feature for the ankane/iceberg-go repository, focusing on backend performance and resource optimization. He implemented an option allowing users to set the maximum concurrency for table scan and planning operations, defaulting to the system’s CPU count or GOMAXPROCS. This approach, using Go and leveraging concurrency control techniques, enables runtime tuning to match diverse hardware environments and workloads. By exposing this configurability through the API, Mustafa addressed throughput and contention challenges in large-scale data scanning. The work demonstrated depth in backend development and API design, providing a flexible solution for efficient data processing without introducing new bugs.