Caching Data Stores: High Performance At Low Cost

A caching data store, e.g., a traditional dbms, moves data between main memory and secondary storage as dictated by access patterns. Such a system provides good cost/performance by hosting hot data in expensive DRAM, while moving cold data to cheaper SSD storage. Data caching system success is demonstrated by the health of the traditional database systems market, and its growth with new vendors offering data caching systems. However, achieving both high performance and low cost using any database system, including data caching systems, has been a challenge. We describe how this problem has been attacked, including in our Deuteronomy project.