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

Content distribution network (Content Delivery Network, referred to as CDN) is a distributed network, which is established and covered on the bearer network, and is composed of server groups of edge nodes distributed in different areas. CDN shares the pressure on the origin server, avoids network congestion, ensures that the distribution of website content is accelerated in different regions and different scenarios, and improves the speed of resource access. Many users will encounter the problem of how to make effective use of CDN in the process of actual use of CDN. Today, the editor will briefly introduce the concept and use of CDN.

The full name of CDN is Content Delivery Network content distribution network, which basically means to avoid bottlenecks and links that may affect the speed and stability of data transmission as far as possible, so as to make content transmission faster and more stable. CDN system can redirect user requests to the nearest service node according to network traffic, connection to each node, load, user distance and response time. Its purpose is to enable users to get the content they need nearby and improve the speed of user access.

CDN somewhat reduces the pressure on the main server, can effectively hide the real ip of its own server, can resist some DDos***, and so on.

CDN is a content distribution network built on the network, relying on the edge servers deployed everywhere, through the load balancing, content distribution, scheduling and other functional modules of the central platform, so that users can get the content they need nearby, reduce network congestion, and improve user access response speed and hit rate. The key technologies of CDN are content storage and distribution technology.

The basic principle of CDN is that all kinds of cache servers are widely used, and these cache servers are distributed to the areas or networks where users are relatively concentrated. When users visit the website, the global load technology is used to direct the user's access to the nearest working cache server, and the cache server directly responds to the user's request.

Content delivery Network (CDN) is a new way of network construction, which is a specially optimized network coverage layer for releasing broadband-rich media in the traditional IP network. In a broad sense, CDN represents a network service model based on quality and order.

To put it simply, content Distribution Network (CDN) is a strategically deployed overall system, including distributed storage, load balancing, network request redirection and content management, while content management and global network traffic management (Traffic Management) are the core of CDN. By judging the proximity of users and server load, CDN ensures that content serves users' requests in a very efficient way.

In general, the content service is based on the cache server, also known as Surrogate, which is located at the edge of the network and is only "Single Hop" away from the user. At the same time, the proxy cache is a transparent mirror of the content provider's source server, which is usually located in the data center of the CDN service provider. Such an architecture enables CDN service providers to provide the best possible experience to end users on behalf of their customers, content providers, who cannot tolerate any delay in request response time.

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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