复杂事件处理中时间窗口的改进

Improvement of Time-Window in Complex Event Processing

针对各种复杂事件处理引擎的优缺点,考虑特别查询和时间窗口2项关键技术,提出一种改进的实现方法。对已有引擎的优缺点进行对比,采用增加预处理和调度模块的方法,实现STREAM系统的改进版本SPSA。实验结果证明,该改进能在特定的条件下提高系统效率、降低系统压力。

This paper makes an improvement on the implementation of exiting Complex Event Processing（CEP） engine according to the present advantage and disadvantage.Considering some key points including Ad hoc query and Time-Window,it adopts pre-processing and dispatch module.It implements an improvement edition（SPSA） of STEAM system.Experimental results prove that the solution above is constructive.It can improve the efficiency of the engine and decrease the pressure of the system under some condition.