新型非易失存储环境下事务型数据管理技术研究

State-of-the-Art Survey of Transaction Processing in Non-Volatile Memory Environments

为适应底层存储架构的变化,上层数据库系统已经经历了多轮的演化与变革.在大数据环境下,以非易失、大容量、低延迟、按字节寻址等为特征的新型非易失存储器件(NVM)的出现,势必对数据库系统带来重大影响,相关的存储与事务处理技术是其中值得关注的重要环节.首先,概述了事务型数据库系统随存储环境发展的历史与趋势;然后,对影响上层数据管理系统设计的非易失性存储技术以及面向大数据应用领域与硬件环境优化的事务技术进行综述与分析;最后,对非易失存储环境下事务型数据库面临的挑战与研究趋势进行了展望.

The design of the upper lever database has experienced several rounds of development and transformation to adapt to the changing architecture of the underlying storage system. In the big data era, the emergence of the novel non-volatile memory（NVM） technologies, which exhibit a series of non-volatile（persistent writes）, high-capacity, low-latency and byte-addressable characteristics, has brought significant impact on traditional database systems, especially for techniques related to storage and transaction processing. First, in this paper, the phylogeny and development trend of the OLTP database along with the storage subsystem is introduced. Then, the non-volatile memory technology which affects the upper data management system design is reviewed along with an analysis on the domain-oriented and the NVM-oriented transaction technologies. Finally, challenges and opportunities are addressed for the NVMoriented OLTP database.