基于区分Web QoS的负载均衡集群模型研究与实现

发布时间：2018-08-28 19:56

【摘要】：随着电子商务的应用逐步深入，互联网的服务模式逐步向电子网上交易转变，这一变化必然导致用户访问量的激增且服务请求多样。如何实现对请求的快速响应是当前解决的问题。而以往的Web服务器没有很好的服务质量保证机制，并没有对服务加以区分。这样所有的请求一致对待，必然会造成后端服务器的负荷运作，使部分的请求得不到及时的响应，进而会失去用户的信任。现在，面向Web的QoS机制应用而生，并且迅速的应用到了电子商务的市场当中。在Web QoS保障机制的基础上，本文提出了基于区分Web QoS的负载均衡的集群模型。根据请求类型和用户权限划分服务等级，高服务的请求具有高优先调度权，在集群当中通过动态反馈技术均衡调度到某个节点，从而达到区分Web QoS服务的目的，同时也保证集群服务器的负载均衡。该模型在网络环境及硬件环境相同的条件下，与常用的负载均衡技术进行了比较，实验结果证明本文提出的方法效果显著。并且IKC（Innovation Knowledge Cloud）云平台当中得到了很好的应用，对访问IKC云平台纷繁多样的请求加以区分，，对于不同的请求提供不同质量的服务，并且针对后端服务器的负载情况响应的分配流量，有效的防止了负载的倾斜，提高了集群服务器的整体性能。
[Abstract]:With the deepening of the application of electronic commerce, the service mode of the Internet is gradually changing to the electronic network transaction. This change will inevitably lead to the surge of users' visits and the variety of service requests. How to achieve a rapid response to requests is the current problem solved. However, previous Web servers do not have a good quality of service assurance mechanism, and do not distinguish between services. In this way, all requests will be treated uniformly, which will inevitably lead to the load operation of the back-end server, and some requests will not be responded in time, and then the users will lose their trust. Now, the application of QoS mechanism for Web comes into being, and it is rapidly applied to the market of e-commerce. Based on the Web QoS guarantee mechanism, this paper proposes a load balancing cluster model based on differentiated Web QoS. According to the request type and the user authority, the high service request has the high priority scheduling right. In the cluster, the dynamic feedback technology is used to balance the scheduling to a certain node, so as to distinguish the Web QoS services. At the same time, it also ensures the load balance of the cluster server. The model is compared with the usual load balancing technology under the same network environment and hardware environment. The experimental results show that the proposed method is effective. And the IKC (Innovation Knowledge Cloud) cloud platform has been applied very well. It distinguishes the various requests to access the IKC cloud platform, provides different quality services for different requests, and distributes the traffic according to the load response of the back-end server. Effectively prevent the load tilt, improve the overall performance of the cluster server.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.09

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