CDN-P2P network framework streaming media buffer memory replacing method

Abstract

The invention discloses a CDN-P2P network framework streaming media buffer memory replacing method comprising the following steps: executing FIFO operation based on video heat priority on the super node PSN side, and executing local service priority operation based on protection pre-distribution on a normal user terminal PCN, wherein the previous operation comprises that a PTS receives a PSN delete order, enters a state refusing a delete content positioning request, keeps the state until the delete operation is finished, informs in the same time, enters a state refusing a content new loading request, and keeps the state until the delete operation is over; when the PTS detects all PCNs finish a program request state, the PTS deletes a delete content directory, and informs the PSN to delete the delete content; the PSN receives the PTS order, and deletes the contents from the hard disc. The method solves the problems that a conventional buffer memory replacing strategy cannot protect the content pre-distribution content and is serving other user contents, and can solve the problems that the content heat cannot be timely updated or the content heat update wastes mass flows.

Description

technical field [0001] The invention belongs to the field of multimedia technology, and in particular relates to a streaming media buffer replacement method of a CDN-P2P network architecture. Background technique [0002] CDN-P2P integrated content distribution network is a content distribution platform with manageability, high scalability, high reliability and low cost. The advantages of the former, but also overcome the shortcomings of the two. Therefore, it has become a more feasible streaming media content distribution technology at present, and it is a hot spot in the research field of streaming media content distribution technology in recent years, and it is expected to become the mainstream technology of streaming media content distribution network architecture in the future. [0003] The cache replacement method is a very important factor affecting the user's viewing fluency and playback experience. A good cache replacement method can not only reduce the pressure on...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problem that the traditional cache replacement strategy cannot protect the pre-distributed content and the content of other users, and at the same time alleviate the problems that the content popularity cannot be updated in time or the update of the content popularity needs to waste a lot of traffic. A Streaming Media Cache Replacement Method of CDN-P2P Network Architecture

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