Flash-Aware Buffer Management for Database Systems

Abstract

Classical buffer replacement policies, e. g., LRU, are suboptimal for database systems having flash disks for persistence, because they are not aware of the distinguished characteristics of flash-based storage devices. We introduce the basic principles of buffer management for such devices and present two efficient buffer algorithms that apply these principles. These algorithms significantly improve the performance of flash-based databases, as confirmed by our trace-driven performance study.

Wear-Aware Algorithms for PCM-Based Database Buffer Pools

“…This is an issue requiring further algorithmic improvements. A possible approach is to dynamically adjust the behavior of the buffer manager based on workload statistics, similar to the approaches of [8][9][10].…”