Content metadata storing, inquiring method and managing system in content delivery network (CDN)

A technology of content distribution network and content metadata, which is applied in the field of communication, can solve problems such as the inability to adapt to the increasing amount of metadata, and achieve high reliability and ensure reliability

Inactive Publication Date: 2010-06-16
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a storage and query method and management system for conte

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  • Content metadata storing, inquiring method and managing system in content delivery network (CDN)
  • Content metadata storing, inquiring method and managing system in content delivery network (CDN)
  • Content metadata storing, inquiring method and managing system in content delivery network (CDN)

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Embodiment Construction

[0033] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0034] For a CDN network, metadata used to describe content at least includes content identification information and content address information.

[0035] The basic idea of ​​the storage method of the present invention is: in the CDN, hash (hash) functions are provided on other nodes except the CDN central node, and the hash functions saved on each node define the content identification information and the information to which the node belongs. Correspondence between address information of nodes in the autonomous domain;

[0036] When a new content is distributed to other nodes except the CDN central node, the node that receives the new content maps the identification information of the new content to the address information of a storage node according to the hash function stored locally, and then The metadata of the new content is se...

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Abstract

The invention discloses content metadata storing, inquiring method and managing system in content delivery network (CDN). In the CDN, nodes, except the CDN central node, are provided with hash functions, and the hash functions stored in each node define the corresponding relationship between content indentifying information and the address information of nodes in an autonomous system to which the mode belongs; when a new content is delivered to the nodes except the CDN central node, the node receiving the new content sends the metadata of the new content to the storing node for storage after mapping the identifying information of the new content to the address information of one storing node according to natively stored hash functions. The managing system is characterized in that in the CDN, the content metadata provided by each autonomous system is dispersedly stored in nodes of the autonomous system in the mode of distributed hashing table (DHT).

Description

technical field [0001] The present invention relates to the communication field, in particular to a storage and query method and management system for content metadata in a content delivery network (Content Delivery Network, CDN). Background technique [0002] Such as figure 1 As shown, a typical content distribution network is divided into multiple layers, and each layer has several autonomous domains (the area is represented by an ellipse in the figure), which converges from the bottom CDN edge node upwards to the top CDN central node. In each autonomous domain, a centralized and dedicated index server is usually used to manage metadata on all nodes in the autonomous domain. [0003] Because the number of content in the CDN network may be tens of thousands, hundreds of thousands, or even millions, and it is still increasing with development; on the other hand, there are many problems in sharing content in the network in the form of an entire file. The complete program co...

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L29/06H04L29/12H04L29/08
Inventor 周扬
Owner ZTE CORP
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