Survey of mainmemory database availability
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摘要: 随着计算机硬件技术的高速发展,内存的成本不断降低,数据库管理系统将其工作数据集完全放入内存变得可行.相比于常规的磁盘数据库,内存数据库具有更快的数据存储速度、更高的吞吐量和更强的并发访问能力,满足了许多应用的快速响应需求.然而,由于内存是易失性存储介质,与磁盘数据库在可用性方面有一定区别.本综述重点讨论了适用于内存数据库提高可用性的主要策略,包括快速恢复策略、冗余备份和容错等.Abstract: With the development of hardware technology, the cost of main memory is decreasing, which makes it possible to let DBMS (Database Management System) put the whole data into main memory. Compared to traditional DRDB (DiskResident Database), MMDB (MainMemory Database) provides much faster of data storage, higher throughput of applications, stronger ability on concurrent access, and meets the demand of timely response. However, due to its volatility, MMDB has differences on system availability with DRDB. The survey focuses on main strategies of improving the availability of MMDBs, including fast recovery, redundant backup and fault tolerance mechanism.
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Key words:
- main memory database /
- availability /
- reliability /
- fast recovery /
- fault tolerance
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