Method, device and system for load balancing

Abstract

The embodiment of the invention discloses a method, a device and a system for load balancing. The method comprises the steps of: acquiring an ARP (Address Resolution Protocol) request sent by a client; calculating to obtain a first server, the load of which is less than a preset threshold value, in a server cluster according to the load state of each server by a preset load balancing algorithm, and acquiring the MAC (Media Access Control) address of the first server; and sending ARP response information to the client, wherein the ARP response information comprises the MAC address of the firstserver. By acquiring the ARP request sent from the client and adopting the load balancing algorithm to select a sever with less load for the client, the embodiment of the invention realizes the load balancing of the server; and by processing the ARP request, the invention improves the service request processing speed, reduces the possibility of bottleneck and response time and enhances the load balancing user experience.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a load balancing method, device and system. Background technique [0002] When providing network services to users, in order to provide more and faster services, server clusters are often used to provide services to users. The server cluster shares the same virtual IP address externally. From the perspective of external users, it is equivalent to a server providing services for them. In order to avoid unbalanced load borne by each server, it is necessary to use a load balancing device to balance the load of the server cluster. [0003] Most of the load balancing devices in the prior art are Linux virtual servers (Linux Virtual Server, hereinafter referred to as LVS). After the LVS server. After receiving the service request sent by the client, the LVS server selects a server with a smaller load in the server cluster, and rewrites the Media Access Control (MAC) addre...

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Problems solved by technology

[0004] After researching the prior art, the inventor found that in the prior art solution, in some networks with a large number of service requests, all service requests All data will pass through the load balancing device. When the number of service requests exceeds the processing capacity of the load balancing device, the load balancing device cannot forward all service requests to the server in a timely manner. At this time, the load balancing device will become a bottleneck, making the response time longer , leading to a decrease in the load balancing user experience of the system

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