CDN video buffer system and method

A caching and video technology, applied in the network field, can solve problems such as affecting user experience, large video delay, edge node cache capacity and cache bandwidth waste, etc., to improve user experience, reduce latency, and optimize cache capacity management.

Active Publication Date: 2015-10-07
SHANGHAI MEIQI PUYUE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a caching strategy has the following problems: 1) If the video program is an unpopular program, that is, a program that is only accessed once in a while, it will cause a waste of the cache capacity and cache band

Method used

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  • CDN video buffer system and method

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Embodiment Construction

[0047] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0048] First, the present invention provides a method and system for video caching in a CDN network. In this system, the video caching method includes:

[0049] 1) Real-time record the number of times each movie source has been accessed by the client from the cache server in a recent period of time. Only when the number of visits reaches a certain threshold, the movie source is cached from the central node to the edge node server. In this way, the waste of cache capacity and cache bandwidth of edge nodes can be avoided;

[0050] 2) Mark the priority of the film sources stored in the CDN distribution network. The priority is divided into ten levels: 10, 9, 8...1, and the priority of popular film sources is marked as high priority. At the same time, each The priority of the first slice file of a source is al...

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PUM

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Abstract

The invention relates to a CDN (Content Delivery Network) video buffer system, comprising a CDN management server, a content management platform, a plurality of buffer servers, a source server, a plurality of clients and a database server. The invention also relates to a CDN video buffer method which obtains the times of film sources being visited by clients in a certain period in real time from the plurality of buffer servers, and only when the times of being visited reach a threshold value can the film sources being buffered in the buffer servers. In addition, the system comprises performing priority annotation on each film source in the system, buffering film sources with high priorities into the buffer servers, and deleting film sources with low priorities when the capacities of the buffer servers are full. The CDN video buffer system and method optimize buffer capacity management, avoid frequent buffer replacement and bandwidth waste, and are widely applied to the fields of video click or live video, and network video monitoring.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a CDN network, in particular to a video caching system and method in the CDN network. Background technique [0002] CDN (Content Delivery Network) content distribution network realizes the distribution of content from the central source site to the edge nodes of the network, providing users with proximity services. In particular, the CDN network is an important part of the streaming media system, and it provides an important support for ensuring the quality of streaming media services. The cache capacity and bandwidth required by the CDN network serving streaming media services are huge, so it is particularly important to properly cache and save bandwidth as much as possible. [0003] Currently, in a CDN network serving streaming media services, when a user accesses a certain video content, after the CDN scheduling process, the user will access the cache server closest ...

Claims

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Application Information

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IPC IPC(8): H04N21/231
CPCH04N21/23106H04N21/23109H04N21/23113
Inventor 逯利军钱培专侯卫东李克民宋聚平胡森标张树民何斌李旭
Owner SHANGHAI MEIQI PUYUE COMM TECH
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