Method and device for domain name resolution

Abstract

This application discloses a domain name resolution method, which is applied to a DNS server. When receiving a domain name resolution request initiated by a client and carrying a target domain name, each node corresponding to the target domain name and each of the The weight value of node; According to the weight value of each described node, determine the repeated quantity of each described node IP address in the IP address list that sends to described client; Described IP address list is sent to client, makes The client randomly selects any IP address in the IP address list, which prevents the client from re-querying the DNS server when the connection to the IP address fails. And because the number of repetitions of different nodes in the IP address list is determined according to the weight of the node, although the client selects the IP address at random with equal probability, the actual result is not equal probability, and the node with the largest weight is selected The probability is higher, which improves the utilization rate of nodes with larger weights.

Description

technical field [0001] The present invention relates to the field of Internet technologies, and more specifically, to a domain name resolution method and device. Background technique [0002] IP address (English full name: Internet Protocol Address, Chinese full name: Internet Protocol Address) refers to the Internet Protocol address. The IP address is a unified address format provided by the IP protocol. It assigns a logical address to each network and each host on the Internet to shield the difference in physical addresses. [0003] Domain name (full name in English: Domain Name) is the name of a computer or computer group on the Internet consisting of a string of dot-separated names. It is used to identify the electronic location of the computer during data transmission. The address of the server (website, email, FTP, etc.). A server cluster may have the same domain name. For example, when we use the domain name of Baidu search engine to access Baidu search engine, the ...

AI Technical Summary

Problems solved by technology

[0006] However, in the existing domain name resolution technology, when the client receives the address fed back by the DNS server, it can only receive one IP address. When the connection to the IP address fails, it needs to re-query the DNS server to obtain a new IP address.

Images