Large file distribution method based on CDN

Abstract

The invention provides a large file distribution method based on a CDN. The method comprises the following steps: a DNS module receives a request sent by a client and sends the request to a metadata server; and the metadata server retrieves built-in file list information to judge whether the request is a large file, and responds to the DNS module if the request is the large file, and the DNS module and a load balancing system select at least one edge node in a healthy state from an edge node set according to a predetermined strategy in the edge node set to respond to the client. In the large file distribution method provided by the invention, the DNS module and the load balancing system select at least one edge node in the healthy state from the edge node set according to the predetermined strategy in the edge node set, so that the response speed of a user to a concurrent request of large files is realized, the calculation load of the edge node is reduced, and the data distribution effect of the large files based on the concurrent request in the CDN environment is improved.

Description

technical field [0001] The invention relates to the technical field of content distribution network, in particular to a method for distributing large files based on CDN. Background technique [0002] With the rapid development of Internet services, the improvement of the service quality and user experience of service applications such as network applications or large file downloads is no longer limited to the underlying network control. Content delivery network (Content Delivery Network, CDN) technology came into being. CDN is a specially optimized network coverage layer that can distribute bandwidth-rich media on traditional IP networks. CDN is a network service model based on quality and order. CDN aims to improve the service quality and user experience of Internet services, and provides better network application experience to end users of Internet services through network edge nodes (Network Edge Node, NEN). [0003] At present, the distribution requests of large file...

AI Technical Summary

Problems solved by technology

Although there are technical solutions for concurrent downloading in the existing technology to solve the download of large files, when traditional large files are downloaded concurrently, the access requests containing large files are also placed in the same edge node

This will lead to congestion of the cache system load in one or some edge nodes in the CDN, resulting in performance degradation of the entire CDN, and even a standstill of CDN network communication services

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