Large file distribution method based on CDN

Abstract

The present invention provides a method for distributing large files based on CDN, comprising: a DNS module receives a request sent from a client and sends it to a metadata server; the metadata server checks whether the request is a large file by retrieving its built-in file list information Make a judgment, if the request is a large file, then reply to the DNS module, and the DNS module and the load balancing system select at least one healthy edge node from the edge node set according to the predetermined strategy to respond to the client . In the invention, in the present invention, at least one edge node in a healthy state is selected from the edge node set according to a predetermined strategy through the DNS module and the load balancing system in the edge node set, so as to realize the response speed of users to concurrent requests for large files and reduce It reduces the computing load of edge nodes and improves the effect of data distribution based on concurrent requests for large files in the CDN environment.

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

Images