基于B/S的高校在线考试系统并发性和可靠性的优化

The Optimization of B/S Based University Online Examination System Concurrency and Reliability

在现有B/S在线考试系统的基础上,对系统的并发性和可靠性进行了优化.采用二级存储策略、降低服务端数据更新量、服务器生成静态页面和错开时间分批开始考试等方法,提高了系统并发控制能力.采用双计时认证的方法,解决了考生故意关机争取更多答题时间问题,应用二级存储策略,解决了考试现场保存和恢复问题,确保了在线考试系统可靠、稳定地运行.应用Loadrunner性能测试软件对在线考试系统进行了负载测试,运行效果良好.

On the basis of the existing B/S online examination system, solves the concurrency and reliability are optimized. Applying the two storage strategies reduces the service-side data updates, the server generates static pages and staggered batches to begin the examination and other methods to improve system concurrency control capability. Applying the two-timing authentication method solves the candidates deliberately shut down to fight for more additional time, and applying the two storage strategies solves the exam site saving and restore problems, to ensure reliable online examination system stable, applying the Loadrunner performance test software, test the operation of the load, while the online examination system works well.