异地双活系统热点均衡方法研究

发布时间：2018-03-02 00:02

本文关键词： 民航旅客信息服务系统异地双活模式热点均衡方法球面voronoi图故障切换机制　出处：《中国民航大学》2015年硕士论文　论文类型：学位论文

【摘要】：数据集中已成为企业数据处理和存储的趋势,系统高可靠性和高可用度就成为不可回避的问题。借助云计算和虚拟化技术的快速发展,异地双活模式将为系统高可靠和高可用提供容灾保障,对于作为国家八大重点信息系统之一的民航旅客服务信息系统更是至关重要。因而,中国航信提出了建设新一代民航旅客信息服务系统,其中,基于高并发、大交易量的异地双活热点均衡灾备中心非常重要。论文正是基于这种需求进行研究,具体的工作如下:论文分析了异地双活的模式及特点,在此基础上深入结合了民航旅客信息服务系统的特点和架构,分析了三种“两地三中心”异地双活模式的优缺点,给出了单写双读的“两地三中心”异地双活建设模式。基于“两地三中心”系统架构和球面voronoi图的方法,提出一种通过基于球面voronoi图的数据中心服务区域划分来分配热点的均衡方法,该方法考虑了数据中心最大负载量的受限性和所有被分配用户访问到各自数据中心的总距离最小化,并在求解过程进行了双曲线优化逼近和用户分布估计,进行了相关方法的验证,实验对比结果表明了所提方法的有效性。最后,探索了异地双活系统的切换机制,提出了一种快速、智能化的切换信号生成方法。
[Abstract]:Data set has become the trend of enterprise data processing and storage, and high system reliability and availability has become an unavoidable problem. With the rapid development of cloud computing and virtualization technology, The remote dual mode will provide disaster tolerance for high reliability and high availability of the system. It is even more important to the civil aviation passenger service information system, which is one of the eight key information systems of the country. CAAC has proposed the construction of a new generation of civil aviation passenger information service system. Among them, it is very important to establish a new disaster preparedness center based on high concurrency and high volume of transactions. The specific work is as follows: the paper analyzes the mode and characteristics of "two live in different places", on the basis of which, it deeply combines the characteristics and structure of civil aviation passenger information service system, and analyzes the advantages and disadvantages of the "three centers in two places" and two living modes in different places. The construction mode of "two places with three centers" and "two places with three centers" is given, which is based on the system structure of "two places and three centers" and the method of spherical voronoi diagram. In this paper, a new equalization method based on spherical voronoi graph is proposed to allocate hot spots through the partition of service areas of data centers. The method takes into account the limitation of the maximum load of the data center and the minimization of the total distance from all assigned users to their respective data centers. Hyperbolic optimization approximation and user distribution estimation are performed during the solution process. The experimental results show the effectiveness of the proposed method. Finally, a fast and intelligent switching signal generation method is proposed.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V354;TP308

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