What is cdn acceleration
Compared with other CDN service providers, the main advantages of CDN include stable and fast, cost-effective, easy to use, efficient and intelligent. More users will ask about the advantage of stability and speed. Generally speaking, CDN is characterized by sharing the pressure on the origin server, avoiding network congestion, accelerating the distribution of website content in different regions and different scenarios, and improving the speed of resource access. The following is to introduce what is the CDN acceleration service.
What is the cdn acceleration service? With the development of the network, users pay more and more attention to the browsing speed of the website. in order to enable users everywhere to visit with high quality, and minimize the cost and the pressure of website management, cdn accelerated service was born.
The full name of CDN is Content Delivery Network, that is, content delivery network. Its purpose is to publish the content of the website to the "edge" of the network closest to the user by adding a new network architecture to the existing Internet, so that users can get the content they need nearby and improve the response speed of users visiting the website.
CDN is different from mirroring because it is smarter than mirroring. It can be used as an analogy: CDN= smarter mirroring + caching + traffic diversion. Therefore, CDN can obviously improve the efficiency of information flow in the Internet, comprehensively solve the problems of small network bandwidth, large number of user visits and uneven distribution of sites, and improve the response speed of users visiting the website.
To better understand CDN, take a look at the workflow of CDN. When a user visits a website that has joined the CDN service, the best CDN node closest to the user is determined by DNS redirection technology, and the user's request is directed to this node. When the user's request reaches the specified node, the CDN's server (the cache on the node) is responsible for providing the content requested by the user to the user.
The specific process is as follows: the user enters the domain name of the website to be visited in his browser, the browser requests the resolution of the domain name from the local DNS, the local DNS sends the request to the main DNS of the website, and the master DNS determines the most appropriate CDN node according to a series of policies, and sends the resolution result (IP address) to the user, and the user requests the content of the corresponding website from the given CDN node.
The above is about what the cdn acceleration service is, and I hope it will be helpful to you.
