Structuring data for efficient I/O format compress addr state c/c Outline ① Data format Row vs Column Compressing data oCompression algorithms Efficiency and use cases Data addressing o Hierarchical namespaces ●Limitations ●Flat namespaces Stateful interfaces ●POSIX ●Limitations o Stateless interfaces Conclusion 3/42 S.Ponce CERNStructuring data for efficient I/O 3 / 42 S. Ponce - CERN format compress addr state c/c Outline 1 Data format Row vs Column 2 Compressing data Compression algorithms Efficiency and use cases 3 Data addressing Hierarchical namespaces Limitations Flat namespaces 4 Stateful interfaces POSIX Limitations Stateless interfaces 5 Conclusion