Domain name updating method, system and main DNS (Domain Name System) server

A technology of a DNS server and an update method, applied in the field of computer networks, can solve the problems of not effectively improving the update efficiency of the entire DNS service node, increasing server and network pressure, and requesting multiple updates, so as to improve update efficiency, reduce resource consumption and The effect of external network traffic and reducing the number of requests

Inactive Publication Date: 2017-05-03
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the expansion of capacity and the increase of the number of servers, there may be multiple requests for updating the same domain name in a short p

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  • Domain name updating method, system and main DNS (Domain Name System) server
  • Domain name updating method, system and main DNS (Domain Name System) server
  • Domain name updating method, system and main DNS (Domain Name System) server

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] In order to reduce the number of requests from the DNS service node to the authoritative DNS node, the present invention sets a master DNS server and a slave DNS server, and only the master DNS server initiates a domain name query request to the authoritative DNS server, and then synchronizes t...

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Abstract

The invention discloses a domain name updating method, a system and a main DNS (Domain Name System) server. The method comprises steps: the main DNS server sends a domain name query request to an authoritative DNS server; the main DNS server receives a domain name query result sent by the authoritative DNS server, and a locally-saved domain name buffer record is updated according to the domain name query result; and the main DNS server synchronizes the updated domain name buffer record to each slave DNS server to enable each slave DNS server to update the locally-saved domain name buffer record. Through arranging the main DNS server and the slave DNS servers, the main DNS server is in charge of domain name updating, the updated domain name buffer record is synchronized to each slave DNS server, the request times from the DNS service node to the authoritative DNS node can be reduced, the resource consumption and extranet flow can be reduced, and the system updating efficiency is improved.

Description

technical field [0001] The invention relates to the field of computer networks, in particular to a domain name update method, system and main DNS (Domain Name System, Domain Name Resolution System) server. Background technique [0002] The DNS system is an important part of the network. Users need to resolve the DNS domain name in order to obtain the corresponding IP (Internet Protocol) address and access the website. Therefore, the domain name cache records in the DNS server need to quickly respond to user requests. Each domain name cache record stored by the DNS server has an effective time (TTL, time tolive). For the resolution request sent by the client, within the effective time, the DNS server can directly return the resolution result to the client according to the local domain name cache record. [0003] At present, due to the large number of visits to some popular domain names, some DNS servers 12 adopt the technology of active update, that is, actively initiate a ...

Claims

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Application Information

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IPC IPC(8): H04L29/12
CPCH04L61/4511H04L61/58
Inventor 彭巍曹维华贺晓东杨胜李文云徐博文
Owner CHINA TELECOM CORP LTD
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