Worked on the rustfs/rustfs repository to enhance the reliability of the ListBuckets API by addressing a specific issue where the CreationDate field could be missing from responses. Using Rust and API development skills, implemented a solution that defaults any absent CreationDate values to UNIX_EPOCH, ensuring that every API response consistently includes this field. This approach maintained backward compatibility and required no changes to the API contract, reducing the need for client-side optionality handling. The fix improved downstream analytics and data quality for bucket listings, aligning the service with client expectations and supporting more robust integration scenarios for consumers.