计算机应用研究2012，Vol.29Issue(5)：1838-1841,4.DOI:10.3969/j.issn.1001-3695.2012.05.063
绝对延迟保证在Web应用服务器数据库连接池中的实现
Implementation of absolute delay guarantee in database connection pool in Web application servers
吕健波 1戴冠中 1慕德俊1
作者信息
- 1. 西北工业大学自动化学院控制与网络研究所,西安710072
- 折叠
摘要
Abstract
Network QoS mechanisms are insufficient to provide complete end to end performance guarantees. In e-commeree Web sites composed of a three-tiered architecture, this paper proposed and implemented absolute delay guarantee in the database connection pool(DBCP)in Web application servers based on feedback control. It improved the database connection pool to ensure that the response time for requests with high priority was no more than the threshold specified. It set up the approximate linear time-invariant models of the DBCP through system identification and designed the absolute delay guarantee controller. It implemented all the components of closed-loops in a real DBCP for the Tomcat Web application server. Test results show that the controllers designing is effectively even if the number of concurrent requests varies severely.关键词
Web应用服务器/反馈控制/绝对延迟保证/系统辨识/数据库连接池Key words
Web application server/feedback control/absolute delay guarantee/system identification/database connection pool分类
信息技术与安全科学引用本文复制引用
吕健波,戴冠中,慕德俊..绝对延迟保证在Web应用服务器数据库连接池中的实现[J].计算机应用研究,2012,29(5):1838-1841,4.
