Streaming media video-on-demand duplicate hybrid buffer strategy based on cloud server cluster

A video-on-demand and cache strategy technology, applied in the field of cloud storage, can solve the problem of low utilization of cache space and achieve the effect of avoiding copying and deletion

Inactive Publication Date: 2013-09-11
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Purpose of the invention: This invention mainly solves the problem of low cache space utilization when multiple copies are placed, improves

Method used

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  • Streaming media video-on-demand duplicate hybrid buffer strategy based on cloud server cluster
  • Streaming media video-on-demand duplicate hybrid buffer strategy based on cloud server cluster
  • Streaming media video-on-demand duplicate hybrid buffer strategy based on cloud server cluster

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Embodiment Construction

[0098] A copy hybrid caching strategy for streaming video-on-demand based on a cloud server group, including the following content:

[0099] Content 1, according to figure 1 data, a new dynamic prefix chunking method based on video duration is proposed. Depend on figure 1 It can be seen that the shorter the duration of the video, the greater the proportion of it being watched by the user; on the contrary, the longer the duration of the video, the greater the probability of interruption in the middle.

[0100] Dynamic prefix chunking of video copies based on video duration. Provide n video programs V={V 1 , V 2 , V 3 ,...,V n}, its video duration set is T, T={T 1 ,T 2 , T ３ ,...,T n}, each video copy dynamic prefix block set in video V is P, P={P 1 , P 2 , P 3 ,...,P n}.

[0101] For the video copy to be chunked, get the video duration. When the video duration is 0-1000 (sec), the video copy is prefixed with the full video.

[0102] When the video duration is 1...

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Abstract

The invention discloses a method for effectively buffering streaming media video-on-demand duplicate hybrid buffer strategy based on a cloud server cluster. The method includes performing prefix dynamic blocking on the video duplicates based on video duration, and utilizing a dynamic prefix and complete duplicate hybrid storage strategy to improve system efficiency and experience quality of users; confirming number of needed duplicates according to factors such as video hot degree and confirming two types of the duplicates (complete duplicates and prefix duplicates) on the basis of demanding rate, and dynamically segmenting prefixes of the prefix duplicates on the basis of video duration so as to generate the prefix duplicates; and when storage space is enough, utilizing a hot balance and load balance combining method to store the duplicates, and when storage space is not enough, smoothly deleting hot-degree-decreasing video duplicates based on time window threshold values. By the method, users can obtain good video-on-demand experience.

Description

technical field [0001] The invention relates to a hybrid caching strategy for performing dynamic prefix block division and dynamically performing prefix copy and complete copy on a cloud server group for a copy of a stream media video source file, and belongs to the field of cloud storage. Background technique [0002] Streaming media (especially high-definition video) has the characteristics of large data volume and high real-time requirements. The video copy storage strategy in the streaming video on demand system has a direct impact on the performance of the system. Utilizing cloud server clusters to cache and manage video copies can improve system performance. [0003] The user's video-on-demand behavior is related to network performance. If the user waits for a long time, he will give up the video-on-demand. Studies have shown that streaming video on demand conforms to the long-tail effect, that is, among all video programs, users tend to watch 20% of the video progra...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08G06F17/30
Inventor 宋建新张春雨
Owner NANJING UNIV OF POSTS & TELECOMM
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