Uber's Compliance Data Store (CDS) has implemented an archival and retrieval mechanism to efficiently manage regulatory data, addressing challenges such as schema evolution and data ingestion during backfills. This solution optimizes storage usage between hot and cold storage while ensuring compliance and accessibility, allowing for automated workflows that adapt to varying data needs.

The article discusses content-addressable storage, a method that allows data retrieval based on content rather than location, enhancing data management and retrieval efficiency. It explores the advantages of this system, including improved data integrity and the ability to easily locate and access files across distributed systems.