Load balance modulator possessing TCP connection fault tolerant function and its modulating method

Abstract

Two sets of the computer system with identical configuration side by side are installed in the backboard to form the integrated structure of computer duplex coordinated. The DOM is utilized to act asthe permanence storage and the customized Linux operation system is installed in the computer. The computer duplex is set up the same IP addresses and the physical addresses to receive the external IP packets at the same time. The IP packets are filtered at the link layer with different rules so as to split the flow of the network requests, which are dispatched by the virtual server of Linux. In the computer duplex system, the two computer systems are monitored, controlled and backed up each other. Thus, in the case of one computer in fault, the user's connection is not interrupted.

Description

technical field [0001] The invention belongs to the field of computer applications, and in particular relates to a load balancing scheduler with a TCP connection fault-tolerant function and a scheduling method thereof. Background technique [0002] Today's computer technology has entered the network-centric computing period, and a large number of applications are carried out around the network, which puts forward higher and higher requirements for the performance and reliability of the server. For example, with the rapid development of the Internet and the rapid growth of users, the more popular Web sites will not be able to process user requests in time due to the sharp increase in the number of visits, causing users to wait for a long time or even be rejected, which greatly reduces the quality of service . For CPU-intensive applications, such as Web services with Common Gateway Interface (CGI) and database operations, the server performance bottleneck problem is more prom...

AI Technical Summary

Problems solved by technology

An important shortcoming of this fault-tolerant processing method is that all established TCP connections will be lost, which will cause inconvenience and even loss to users.

The disadvantage of this approach is that it costs a lot

Especially when the number of connections increases and the state changes frequently, multicast can cause a heavy burden on the network

In addition, this method requires a dedicated backup node to perform extremely low-cost backup work, and cannot share scheduling tasks for the scheduler, so resources are wasted, which is especially prominent for smaller-scale cluster server sites

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