A virtual cache channel cache management method for software-defined network

Abstract

A software-defined network virtual cache channel cache management method, under the fusion architecture of software-defined network and content-centric network, the selection of cache nodes and the replacement of cache content are carried out through the controller's perception of the entire network topology and cache information Centralized control and optimization. In the present invention, all node cache spaces on a forwarding path are considered as a whole, thereby providing a basis for the coordination and unification of the cache decision strategy and the cache replacement strategy. In this method, the controller periodically collects the content requests of each node in the network, and counts the popularity of the cached content of each node respectively, and then selects the least important content in the virtual cache channel according to the auxiliary caching method based on the cost. The content with the least popularity is replaced, so as to make the optimal caching strategy for this channel.

Description

Technical field [0001] The present invention relates to the field of computer networks, the centralized control of software-defined network controllers and the perception of network-wide information under the integrated architecture of software-defined network and content center network, and particularly relates to joint optimization and slowing [0002] A software-defined network virtual cache channel cache management method for storage decision and cache replacement. Background technique [0003] With the development of the Internet, people's main application requirements for the network have become information acquisition and data transmission, and the original IP-based point-to-point network communication mode can no longer meet people's needs well. Especially with the continuous growth of video services, people have higher and higher requirements for the ability of the network to transmit massive data. The rapid growth of network scale and the continuous introduction of new a...

AI Technical Summary

Problems solved by technology

[0006] On the one hand, the traditional content-centric network lacks the ability to perceive the entire network and cannot capture the dynamic changes of the network, which will make the cache decision results meaningless; on the other hand, in the integration of content-centric network and software-defined network If the architecture only focuses on the cache decision strategy and does not consider the cache replacement strategy, the result of the last cache decision may be replaced, resulting in a decrease in the cache hit rate and a waste of network resources.

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