Distributed cache method and device

Abstract

The invention provides a distributed caching method. The method comprises that a first caching device receives a first content object request information sent by a user, and an address of a second caching device is obtained in accordance with a symbol of a first content object if the first caching device does not cache the first content object; the first content object is requested to the second caching device in accordance with the address of the second caching device; the first content object is obtained from an origin server in accordance with an internet protocol (IP) address of the origin server which corresponds to the first content object if the second caching device does not cache the first content object; and the first caching device sends the first content object to the second caching device. The invention also discloses a caching device. By the aid of the technical scheme, the utilization ratio of caching devices in access network is improved, and the occupation for backbone network bandwidths is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a distributed cache method and device. Background technique [0002] With the continuous popularization of Internet technology, the amount of data transmitted on the Internet has experienced explosive growth. On the one hand, people's Internet needs have shifted from applications with small data volume and low real-time performance such as web browsing and e-mail to high-definition videos and pictures that require high bandwidth. On the other hand, due to the abundance of terminal devices, people can access network resources anytime and anywhere through various access methods. The traditional content object acquisition method makes many clients establish sessions with the server corresponding to the content object at the same time, causing the server to be overwhelmed, the network load is uneven, and the local network is congested. In order to...

AI Technical Summary

Problems solved by technology

During the research and practice of the prior art, the inventors of the present invention have found that, affected by the cost and equipment space in the access network, the cache memory (Cache) capacity of each cache device in the access network is very large. Small, if there are multiple caching devices in the access network, and each caching device is connected to multiple different users, when the frequency and business volume of these users accessing the network are quite different, the connected users access the network more frequently. The cache of the cache device is often full on the device. When users continue to access the network through the cache device whose cache is full, the cache device will no longer have the ability to cache. If the content objects accessed by these users have previously If it has not been cached by the cache device, it will not be cached by the cache device again. The next time a user wants to access this content object, they can only directly obtain data from the source server corresponding to the content object, so that these users can obtain the content object The speed will be affected, and it will also increase the bandwidth occupation of the upper backbone network of the access network

Images