Shulou(Shulou.com)05/31 Report--

Today, I would like to talk to you about the basic technical principles of CDN, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

Basic technical principles of CDN

Content distribution network (cdn) uses intelligent routing and traffic management technology to find the accelerated node that can provide the fastest response to visitors in time, and direct visitors' requests to the accelerated node, which provides content services. Using the content distribution and replication mechanism, cdn customers do not need to change the original website structure, but only need to modify a small amount of dns configuration to accelerate the response speed of the network.

When the user visits the website that uses the cdn service, the dns domain name server redirects the final domain name request to the intelligent dns load balancing system in the cdn system through cname. Intelligent dns load balancing system provides users with the node address that can respond to users most quickly through a set of pre-defined policies (such as content type, geographical area, network load status, etc.), so that users can get fast services.

At the same time, it also maintains communication with all cdn nodes distributed in different locations, collects the health status of each node, and ensures that user requests are not allocated to any node that is no longer available. The network destination cdn also has the ability to adaptively adjust routing in the case of network congestion and failure.

After using the cdn service, the user's access process is shown below:

After reading the above, do you have any further understanding of the basic technical principles of CDN? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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