CFDC: A Flash-aware Replacement Policy for Database Buffer Management

Flash disks are becoming an important alternative to con-ventional magnetic disks. Although accessed through the same interface by applications, flash disks have some dis-tinguished characteristics that make it necessary to recon-sider the design of the software to leverage their performance potential. This paper addresses this problem at the buffer management layer of database systems and proposes a flash-aware replacement policy that significantly improves and outperforms one of the previous proposals in this area. 1