Differentiated Web Service System through Kernel-Level Realtime Scheduling and Load Balancing

摘要

With the rapid increase in the number of Web users and resulting development of various kinds of Web applications, Web Quality of Service(QoS) has become a critical issue for Web services, such as e-commerce, Web hosting, etc. Nonetheless, most Web servers still deal with Web user requests on a First In First Out(FIFO) basis, which cannot provide differentiated QoS. This paper presents two approaches for the differentiated Web QoS: a kernel-level approach, which adds a realtime scheduler to the operating system kernel to maintain the priority of the user requests determined by the scheduler in the Web server, and a load balancing approach, which uses IP-level masquerading and tunneling technology to improve the reliability and response speed of the Web services.