DNS cache information processing method, device and system

Abstract

The invention provides a DNS cache information processing method, device and system. The method includes the steps that when a request of a client side is received, domain name information requested by the client side is analyzed; a data structure corresponding to the domain name information is inquired in a database; when the data structure is inquired, read lock information corresponding to the data structure is obtained, wherein the read lock information is authority information which can execute read operation on cache information stored in the data structure; the authority of the read lock information is used for reading the cache information in the data structure, and the read cache information is sent to a sender of the request of the client side. The DNS cache information processing method, device and system have the advantages of being capable of increasing corresponding speed and the throughout of the cache information, improving flexibility of the cache information and promoting quality of stored information.

Description

technical field [0001] The invention relates to the field of Internet applications, in particular to a method, device and system for processing DNS cache information. Background technique [0002] In people's daily life, when using the network to query materials or data or information, they usually receive results cached by Domain Name System (Domain Name System, hereinafter referred to as DNS) technology. However, the DNS cache result has a certain timeliness, that is, within the effective time, the response result is unchanged, so it can be placed in the cache of the server device, so that the result requested by the client can be returned in a very short time. After the valid time expires, the system goes to the external network to query the domain name and updates the result in the cache. [0003] In the prior art, accessors to shared resources are usually divided into readers and writers by using a read-write lock. Readers only have read access to shared resources, wh...

AI Technical Summary

Problems solved by technology

In the prior art, since the read cache thread cannot read data when writing the cache, the thread waits

Therefore, in the prior art, different domain name cache information affects each other, and when one domain name updates information, other domain name information cannot be read.

When there are a large number of update operations, the existing technology may delay reading for a long time, and the response speed will be greatly reduced

In addition, in the prior art, the cache update is not intelligent

In the existing technology, the cache only decides whether to update it according to the effective time, and it is impossible to automatically manage the cache for many domain names with special requirements, and it is impossible to better improve the quality of the promised request

[0004] To sum up, when processing cached information in the prior art, different cached information affects each other, causing threads to wait and reducing the corresponding speed, and there is no pre-update function and update control strategy, resulting in unintelligent update of cached information. The problem of low-quality cached information may lead to too many updates at the same time, affecting the normal access of users

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