Shulou(Shulou.com)06/03 Report--

After purchasing the CDN service, users will be more concerned about the actual effect in the process of using it. First of all, make sure that it has been activated successfully, and then follow the basic steps to add accelerated domain names and configure CNAME. After all, you can test whether the CDN acceleration is successful. What is the principle of CDN acceleration and what are the benefits of CDN.

We are no stranger to cdn, have you ever heard of cdn server! CDN server is a content distribution network built on the network. Relying on the edge servers arranged in various places, users can obtain the content needed nearby through the load balancing, content distribution, scheduling and other functional modules of the central channel, and then reduce network congestion and improve the response speed and hit rate of user visits. In order to solve different network conditions, we often build different servers to access the network, one of which is the Cdn server.

The English full name of CDN is Content Delivery Network, that is, content distribution network. So CDN server is a set of network server system. It includes many specific functional modules. It includes four main functional modules: distributed storage, load balancing, network request redirection and content management. Content management and network traffic management are the two most important functions in the CDN server.

What is the cdn server?

What is the principle of CND acceleration?

CDN acceleration caches the content of the website at the edge of the network (the place closest to the user's access to the network), and then, when the user accesses the content of the website, the scheduling system routes or directs the user's request to the cache server that is closest to the user's access to the network or has the best access effect. The cache server provides content services for users. Compared with directly accessing the origin server, this method shortens the network distance between users and content, thus achieving the effect of acceleration.

The CDN network architecture is mainly composed of two parts, the center and the edge.

The center refers to the CDN network management center and the DNS redirection analysis center, which is responsible for the global load balancing, and the equipment system is installed in the management center computer room; the edge mainly refers to the remote node, the carrier of CDN distribution, which is mainly composed of Cache and load balancer.

Each CDN node consists of two parts: a load balancing device and a cache server

The load balancing device is responsible for the load balancing of each Cache in each node to ensure the work efficiency of the node; at the same time, the load balancing device is also responsible for collecting the information between the node and the surrounding environment, maintaining communication with the global load DNS, and realizing the load balancing of the whole system.

The cache server (Cache) is responsible for storing a large amount of information about the customer's website and responds to local users' access requests just like a website server close to the user.

Benefits of CDN

Compared with other page speed solutions, CDNS is called "low-hanging fruit". It can improve the speed of your website and provide a lot of benefits. A faster site will lead to a lower bounce rate, which has a direct impact on the site's ranking in search engines. It also helps to provide a higher quality experience for your visitors. You can also use CDN on the host server to save bandwidth. This will help improve the usability of the site and provide a better experience when dealing with too much traffic.

It doesn't matter if we don't understand the above technical terms, as long as we remember that CDN plays the role of content distribution, and your content is copied to different servers in different regions, which is as close to the location of the visitors as possible! cdn server allows users everywhere to have high-quality access, and minimize the resulting costs and website management pressure.

If there is anything else you need to know, you can find our CDN technical engineer on the official website. CDN technical engineer has more than ten years of experience in the industry, so it will be more detailed and professional than the editor's answer. Official website link www.yisu.com

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