Checkpointing memory-resident databases

摘要: A database system is considered in which a main-memory holds all data semiconductor memory, and for recovery purposes backup copy of the maintained secondary storage. The checkpointer component crash manager responsible maintaining copy. Ideally, should maintain an almost-up-to-date while interfering as little possible with system's transaction processing activities. Several algorithms such are presented compared using analytic model. results show some significant performance differences among illustrate tradeoffs that available designing checkpointer. >