Worked on the rustfs/rustfs repository to address a critical bug in tiered object storage, focusing on reliable VersionId handling. Applied Rust and Docker skills to ensure only valid UUIDs are sent to the backend, eliminating errors from invalid or missing IDs during tiered reads and writes. Improved backend data retrieval by forwarding version_id and byte-range for S3 operations, and expanded test coverage to prevent regressions in self-copy and version transitions. Enhanced observability through detailed logging and diagnostics, while updating documentation and refining Docker build processes to support maintainability and continuous integration reliability in backend development workflows.