Data distribution method based on access frequency variable-length logic section

A technology of logical segmentation and access frequency, applied in the information field, can solve problems such as storage space occupation and failure to meet the actual needs of users

Active Publication Date: 2010-02-10
ZHENGZHOU SEANET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, generating copies of large files as a whole based on popularity information does not meet the actual ne

Method used

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  • Data distribution method based on access frequency variable-length logic section
  • Data distribution method based on access frequency variable-length logic section
  • Data distribution method based on access frequency variable-length logic section

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Embodiment

[0083] The method for distributing data based on access frequency variable-length logical segments in the CDN network of the present invention will be further described below in conjunction with specific embodiments.

[0084] image 3 It is a schematic structural diagram of a P2P-based two-layer distribution network utilizing the data distribution method based on access frequency variable-length logical segmentation of the present invention. Such as image 3 As shown, it is assumed that there is a P2P-based two-tier content distribution network structure, including the management layer and data backup layer. Here, the management layer is mainly responsible for the index maintenance of all files and the slicing and calculation process required for content distribution; the data backup layer is Responsible for backup of data copies. Here, the management layer is composed of servers that are fully connected to each other. Data backup has organized all nodes through the Pastry r...

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Abstract

The invention provides a data distribution method based on access frequency variable-length logic sections. The method comprises the following steps: segmenting a file into a fine particle size unit,generating variable-length logic sections for the file based on the access frequency difference at different time periods of the file of a user, respectively carrying out popularity-based multiple-copy placement according to different logic sections, generating multistage index entries for each logic section; and meanwhile adjusting the index entries of the updated file according to the copy levelof the file so that copy distribution of data in a CDN network better conforms to the practical access habit of the user. File slices in the fine particle size form more accurate statistics of the access habit of the user, which facilitates updating the access frequency characteristics of the user based on time change, and the slices are applied to copy generation for content distribution so thatdata distribution in the system is self-adaptively adjusted with time. In addition, application of the multistage index effectively reduces communication expenditure in the case of copy level adjustment of the data, and improves the system performance.

Description

technical field [0001] The present invention relates to the field of information technology, in particular to a data distribution method based on variable-length logic segmentation of access frequency in the technical field of content distribution network composed of distributed nodes. Background technique [0002] The full name of CDN is Content Distribution / Delivery Network, that is, content distribution network. Its purpose is to add a new layer of network architecture to the existing Internet, that is, the middle layer that provides transparent services, and publish the content of the website to the edge of the network closest to the user, so that the user can use it at the fastest speed. The place closest to the user obtains the required information. On the one hand, CDN can reduce the delay and solve the Internet network congestion; on the other hand, it can also effectively implement a variety of broadband applications, improve response speed and service quality, espe...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08H04L12/56H04L1/00
Inventor 王劲林尤佳莉王玲芳李廷屹邓浩江
Owner ZHENGZHOU SEANET TECH CO LTD
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