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Method and device for quickly updating DNS cache record in local area network range

A cache record and local area network technology, applied in transmission systems, electrical components, etc., can solve problems affecting production business, service usage, and service quality degradation, and achieve the effect of optimizing timeliness and improving application service quality

Pending Publication Date: 2022-05-10
INTERNET DOMAIN NAME SYST BEIJING ENG RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The caching method greatly reduces the pressure on the authoritative server and the bandwidth occupied by recursive analysis traffic in the entire network. On the other hand, when the authoritative record value in the authoritative server changes, such as a server goes offline or the IP address changes, the Failure to update the cache in time will cause the service to still use invalid addresses for a period of time, resulting in a decline in service quality and even affecting production business

Method used

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  • Method and device for quickly updating DNS cache record in local area network range
  • Method and device for quickly updating DNS cache record in local area network range
  • Method and device for quickly updating DNS cache record in local area network range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 2 It is a flowchart of a method for quickly updating DNS cache records applicable to a local area network according to an exemplary embodiment of the present application. The method is mainly applied in the multi-level (such as including multiple recursive servers and multiple authoritative servers) DNS server scenarios of multiple types (including recursive requests of different domain name types) in a large local area network. The method includes the following steps:

[0033] Step S101 , monitoring the record value status of the authoritative zone in the authoritative server, and broadcasting a message of the record value update to the intranet when a certain record value is updated.

[0034] The administrator updates a record value in the authoritative zone of the authoritative server. The update action can include adding a new record, modifying the original record, and deleting the original record. The record name and corresponding type of the record are br...

Embodiment 2

[0061] Embodiment 2 of the present invention provides a device for quickly updating DNS cache records applicable to a local area network, including: a monitoring module, a cache clearing module and a response module.

[0062] The monitoring module is arranged in the authoritative server, and is used to monitor the record value status of the authoritative zone in the authoritative server, and when a certain record value is updated, broadcast the message of the record value update to the intranet;

[0063] The cache clearing module is set in the recursive server, and is used to clear the original information associated with the record value from the local cache after the recursive server receives the broadcast message;

[0064] The response module is set in the recursive server, and is used to find the updated record value from the corresponding authoritative server after the recursive server receives the access request initiated by the client to the authoritative area name, and ...

Embodiment 3

[0067] Embodiment 3 of the present invention provides a kind of computer equipment, and its internal structure diagram can be as follows image 3 shown. The computer device includes a processor, memory and a network interface connected by a system bus. Wherein, the processor of the computer device is used to provide calculation and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used to communicate with other terminals or services through a network connection. When the computer program is executed by the processor, a method for rapidly updating DNS cache records applicable to a local area network is realized. Wherein, the computer de...

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PUM

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Abstract

The invention provides a method and a device for quickly updating a DNS cache record in a local area network range, computer equipment and a storage medium. The method comprises the following steps: monitoring a record value state of an authoritative area in an authoritative server, and when a certain record value is updated, broadcasting a record value updating message to an intranet; the recursive server receives the broadcast message and clears original information associated with the record value from a local cache; and after the recursive server receives an access request for the authoritative area name initiated by the client, searching the updated record value from the corresponding authoritative server, re-storing the updated record value in the local cache, and responding to the request of the client. According to the method and the device, when the authoritative record value is updated, the recursive server can update the local cache in time, and the influence of inaccurate records in the cache on the service quality is reduced.

Description

technical field [0001] The present application relates to the technical field of computer domain name resolution, in particular to a method, device, computer equipment and storage medium for quickly updating DNS cache records applicable to a local area network. Background technique [0002] DNS (Domain Name System, Domain Name System), a distributed database on the Internet as a mapping between domain names and IP addresses, 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 (or host name resolution). [0003] When deploying scenarios for large-scale LANs, many internal application services need the support of domain name resolution services, such as the financial system. At this time, the deployment of DNS is usually more complicated, which includes both author...

Claims

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Application Information

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IPC IPC(8): H04L67/5682H04L67/568H04L67/1095H04L61/4511
CPCH04L67/1095
Inventor 朱睿爽蒋超吴琦邢志杰毛伟
Owner INTERNET DOMAIN NAME SYST BEIJING ENG RES CENT