分布式关系型数据库恢复点目标测试方法  

Test Method for Recovery Point Object in Distributed Relational Database

作　　者：吕韬 田峰 李征宇 张雪 LV Tao;TIAN Feng;LI Zheng-yu;ZHANG Xue(Center of Computer and Microelectronics Industry Development,MIIT(China Software Testing Center),Beijing 100048,China)

机构地区：[1]工业和信息化部计算机与微电子发展研究中心(中国软件评测中心),北京100048

出　　处：《工业技术创新》2020年第3期30-36,41,共8页Industrial Technology Innovation

摘　　要：分布式关系型数据库具有广泛应用和技术探究空间,其质量指标关乎信息系统稳定运行、业务连续性等,其中恢复点目标(RPO)是衡量分布式关系型数据库可靠性的核心指标。讨论了分布式关系型数据库RPO的内涵和外延,印证了分布式关系型数据库理论上可以保证RPO等于0,拥有对数据完整性的完全保障能力。针对RPO指标,提出了一种基于场景的测试方法,以写入数据库的事务数量与数据库中记录数的差值表征数据丢失情况。搭建测试环境,应用LoadRunner测试工具,以平均响应时间、每秒虚拟用户HTTP请求数、Tomcat日志等为依据,测试得到三款分布式关系型数据库产品的RPO指标,实现了对数据库容灾能力的评价。Distributed relational database has wide application and technology exploration space, the quality index of distributed relational database is fully related to the stable operation and business continuity of information systems, in which the Recovery Point Object(RPO) is the core index to measure the reliability of distributed relational database. Discussed are the connotation and extension of the RPO in the distributed relational database, which proves that the distributed relational database can guarantee the RPO equal to 0 in theory and has the ability to fully guarantee the data integrity. For the RPO index, a scenario based test method is proposed to show the data loss by the difference between the number of transactions written to the database and the number of records in the database. Built is a test environment, applied is the LoadRunner test tool, and tested are the RPO indicators of three distributed relational database products based on the average response time, the number of virtual users’ HTTP requests per second, Tomcat logs, etc. The database disaster tolerance abilities of the three products are evaluated.

关 键 词：分布式关系型数据库 恢复点目标(RPO) 容灾能力 LOADRUNNER 平均响应时间 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论] TP306.2[自动化与计算机技术—计算机科学与技术]