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Method of implementing data synchronization between server and client in DNS mechanism

A domain name system and data synchronization technology, applied in the transmission system, electrical components, etc., can solve problems such as business operation failure, data out of synchronization, record failure, etc., and achieve the effect of simple method, data synchronization and normal operation

Inactive Publication Date: 2006-07-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, there is a contradiction. If the TTL in the record is too small, the cache will expire soon, the record will become invalid, and the query volume cannot be reduced; if the TTL is too large, when the record in the server is updated, the client will continue to update the record within the validity period. Use the original records, which will lead to the failure of business operation
[0006] From the above point of view, the out-of-sync data between the server and the client has become a problem, which affects the normal operation of the client business

Method used

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  • Method of implementing data synchronization between server and client in DNS mechanism
  • Method of implementing data synchronization between server and client in DNS mechanism

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Embodiment Construction

[0030] The core idea of ​​the present invention is: when the server has data updated, the server will actively send a notification message that the data has been updated to the client, and the client receives the notification message that the data has been updated sent by the server, and according to the field information in the message , to update the client cache record.

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0032] The inventive method step is as follows:

[0033] Step 100: The server judges whether there is any data update, if any data is updated, then go to step 101; otherwise, go back to step 100.

[0034] In this step, the server can determine whether there is data update according to whether other servers send a Notify message of record update to the server. If the se...

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PUM

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Abstract

The invention relates to a method for realizing the synchronous data between the server and the client in DNS mode, which comprises: A, server judging if there is data to be refreshed, if there is, the server sends a information that the data has been refreshed to the client terminal, and uses its field information to mark said information; B, the client terminal according to received field information to refresh the record in the local memory, therefore, the client terminal can according to itself demand to delete relative record in the memory or request the refreshed record to the server again when said record is needed. The invention also allows client terminal to directly refresh the record in the memory for next usage according to the refresh record carried in the inform information of server. The invention can flexibly and simply keep synchronous data between the server and the client to conform the normal operation of client terminal.

Description

technical field [0001] The invention relates to domain name system (DNS) mechanism maintenance technology, in particular to a method for realizing synchronization of associated resource data between a server and a client in the DNS mechanism. Background technique [0002] At present, in the DNS mechanism, data synchronization between servers is realized through the Notify message stipulated in the protocol. For example, after the domain file on the master server is updated, the master server will actively send a Notify message to the slave server to inform the slave server that Domain files have been updated. This keeps the data in sync between the master server and the slave server. [0003] However, there is no such synchronization mechanism between the server and the client to ensure that the data between the server and the client is consistent. The data mentioned here refers to the identification information negotiated between the server and the client. The terminal re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
CPCH04L29/12066H04L61/1552H04L67/1095H04L29/12132H04L61/1511H04L61/4552H04L61/4511
Inventor 徐波
Owner HUAWEI TECH CO LTD
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