一种基于通配规则的服务器动态负载均衡设计

Design of Server Dynamic Load Balancing Based on Wildcard Rules

指出目前专业的网络负载均衡设备成本高昂并且日益成为单点故障或网络拥塞的源头,介绍了OpenFlow标准的基本内容,提出了一种支持动态更新通配规则的可扩展方案,可以将大量客户端请求匹配到多个服务器副本中,通过精确计算通配规则的算法,可在不扰乱现有连接的前提下,动态更新负载均衡策略进行自适应。描述了算法的执行效率并分析了未来研究的几个方向。

The current professional network load balancing equipment is quite high in cost,and increasingly becomes the source of single-point failures or network congestion.This paper introduces the basic content of OpenFlow standard,and proposes an extensible solution to support dynamically updated wildcard rules.Through precisely calculating the wildcard rule algorithm,a large number of client requests can be matched to multiple server copies;load balancing strategy can be dynamically updated for self-adaption without disturbing the existing connection.It also describes the execution efficiency of the algorithm and analyzes several directions for future research.