【摘要】 为了提高内存数据库系统的实时性与稳定性,研究并设计了基于小存贮量的NVRAM获得内存数据库最大性能优化的策略与方法。该方法主要包括:设计NVRAM存储策略,增加控制文件以提高NVRAM的空间利用率;设计日志提交方法以减小提交时间从而提高事务运行速度;设计了系统的检查点策略,及时删除系统无用日志;提出快速恢复方法,在提高了系统的稳定性与可靠性的同时,加快了系统的数据恢复速度。实验结果表明了该策略的可行性与有效性。更多还原

【Abstract】 To enhance the capability of real-time and stability of MMDB,strategies and methods of how to use low storage NVRAM to accomplish most efficient performance are studied,which includes that storage strategy is designed,use a control file to enhance the ef-ficiency of room-usage;use the ping-pong arithmetic to devise a log-committing method to reduce the committing time for the purpose of advancing transaction running speed;the checkpoint strategy of the system is also designed to cancel the unused log;a fast recovery method is put forward to enhance the stability,reliability and the recovery speed of the MMDB system.Finally the validity and efficiency of this strategy are testified through a certain examination.更多还原