Content node in content delivery network and content delivery method
A content distribution network and content node technology, applied in the field of content distribution, can solve problems such as high core network pressure
Inactive Publication Date: 2018-08-24
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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Problems solved by technology
However, if the existing content node is not hit locally, it is "returning to the source" to obtain content and serve users. The problem
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[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0036] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a content node in a content distribution network. The content distribution network of the embodiment of the present invention, also known as the network architecture of the SDCN network, follows the three-layer architecture of the traditional SDN : forwarding plane, control plane and application plane. Specifically, see figure 1 , the application plane is the application service layer; the control plane is composed of northbound interface, control function abstraction layer, and southbound interface layer; the forwarding plane, that is, the device laye...
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The invention provides a content node in a content delivery network and a content delivery method. The content node comprises a user request management module, a local cache management module, a proxymodule, a route table management module and a data downloading module, wherein the user request management module is used for receiving and parsing a http request transmitted by a request end to obtain requested content; the local cache management module is used for inquiring whether a route table entry of the content exists in the route table or not when the content is not cached in the contentnode by inquiry, and taking the content node indicated in the route table entry as a target content node when the route table entry of the content exists in the route table; and the route table management module is used for executing an addition, deletion and / or inquiry command on the route table entry. Through adoption of the content node in the embodiment of the invention, the target content node can be found according to the route table entry when the content requested by the request end is not cached in the local, and update of the route table entry is supported, so that the content delivery convenience is improved.
Description
technical field [0001] The present invention relates to the technical field of content distribution, and more specifically, to a content node in a content distribution network and a content distribution method. Background technique [0002] In the current mainstream IP network, common content nodes mainly refer to network nodes that can store Internet content, such as Web Cache and CDN content nodes (Content Delivery Network, content distribution network). WebCache nodes cache content based on passive storage methods. When When a user accesses a certain content for the first time, the Web Cache node caches the content locally, and when the content is accessed by the user again, the content can be obtained locally from the Web Cache node to serve the user. In addition to the CDN content node in the CDN system, there is also a GSLB (English name: Global ServerLoad Balance, Chinese name: Global Load Balancer). At present, the most commonly used method is to make the user's DNS ...
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IPC IPC(8): H04L29/08H04L12/741H04L45/74
CPCH04L45/54H04L45/745H04L67/02H04L67/56H04L67/568
Inventor 崔华俊刘畅杨慧然徐震张棪谭倩杨兴华
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI