Worked on the facebook/rocksdb repository to enhance backup control and throughput management, focusing on improving data protection workflows and efficiency. Developed a C API extension that allows cancellation of in-progress backups, providing safer and more predictable backup operations. Introduced new options for exposing rate limiter controls during backup and restore, enabling better I/O throughput management. The work included adding comprehensive tests in C to validate backup cancellation and rate limiting, as well as ensuring compatibility for multi-language bindings such as Rust. Maintained high code quality through continuous integration checks, with no regressions observed during the development period. Used C, C++, and testing.