Method for implementing dynamic load balancing based on domain name system (DNS) and DNS

Abstract

The invention relates to a method for implementing dynamic load balancing based on a domain name system (DNS).A client / server architecture is adopted, a server runs on a DNS server, clients run on business servers, the clients send business server state information to the server, and the server receives the business server state information sent by the clients and adjusts DNS configuration according to the information.By building the server on the DNS and building the clients on the business servers, after the server is in communication connection with the clients, the clients send load conditions and other information of the business servers to the server, and the server increases or decreases the load capacity of some specific business server by analyzing the information uploaded by the clients and making a comparison with the average load capacity.Through the technical scheme, the load of a plurality of business servers connected to the DNS can tend to be balanced, and the load balancing between the servers is implemented genuinely.

Description

technical field [0001] The invention relates to the field of computer service distribution, in particular to a method for realizing dynamic load balancing based on DNS. Background technique [0002] DNS (Domain Name System, Domain Name System), a distributed database that maps domain names and IP addresses on the Internet, enables users to access the Internet more conveniently without having to remember IP numbers that can be directly read by machines. The process of finally obtaining the IP address corresponding to the host name through the host name is called domain name resolution. [0003] Since the user host initiates a domain name resolution request to the DNS, the DNS sends the IP address of the specific service server to the user, and then the user host accesses the specific service server through the IP address. In this process, we can see that the DNS actually has the potential to reasonably distribute the service traffic of each server. In the prior art, the DNS ...

AI Technical Summary

Problems solved by technology

[0004] However, there are some inherent obstacles in DNS load balancing in the prior art. There are mainly two points: (1) DNS only statically maps the domain name to the specific server IP, but does not perceive the current state of the server. If the server is already in Abnormal state, DNS will still guide the business, unless configuration changes are made manually

(2) The DNS mapping strategy is based on the ratio of each server in the configuration file, which is also static and cannot be dynamically adjusted according to the actual load of the server when it is running.

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