What is cdn acceleration? Is the website configured with CDN to speed up the price of traffic packages? The full name of cdn is content delivery network, which is a content distribution network. The basic idea is to avoid bottlenecks and links that may affect the speed and stability of data transmission on the Internet, so as to make content transmission faster and more stable. The cdn system forms a layer of intelligent virtual network based on the existing internet by placing node servers on the entire network, and redirects users' requests to the nearest service node in real time according to network traffic, connection of each node, load, distance to users and response time. Its purpose is to enable users to obtain the content they need nearby, solve Internet congestion, and improve the response speed of users when visiting websites.

The response speed of users visiting websites varies in different regions. In order to improve the response speed of user access and optimize the information flow of the existing Internet, it is necessary to add an intermediate layer cdn between the user and the server, so that the user can obtain the required information from the nearest place at the fastest speed, completely solve network congestion and improve the response speed. It is an application scheme commonly used by large websites at present. The process for users to visit websites that do not use cdn cache is as follows:

1. The user provides the browser with the domain name to be accessed;

2. The browser [port vps] calls the domain name resolution function library to resolve the domain name and get the IP address corresponding to the domain name;

3. The browser uses the obtained IP address, and the service host of the domain name sends the data access request;

4. The browser displays the web page content according to the data returned by the domain name host.

Because the core role of cdn is to improve the access speed of the network, its users are websites with large visits, such as icp, isp, large enterprises, e-commerce websites, government websites, etc. Using cdn technology, these websites do not need to invest in expensive servers and set up sub websites. With cdn, cdn will be responsible for information transmission to ensure the normal transmission of information, while technicians only need to maintain the website content, regardless of traffic problems. In this way, the website can ensure that users can get more new services, quickly access the content on the network, and obtain better service quality. For example, users often have to do a lot of query work for websites with a large number of visits and a long content update cycle, such as government websites. This kind of website is suitable for cdn. Also, have you noticed that in the so-called broadband community, the bottleneck is the exit of the community. In this way, if cdn is adopted, it will undoubtedly provide guarantee for community users to use broadband applications such as video on demand and online education.

What is cdn acceleration? Is the website configured with CDN to speed up the price of traffic packages? Any new thing, while bringing improvement to the existing model, also has certain limitations, so does cdn. Poor real-time is the fatal defect of cdn. With the increasing demand for cdn, this defect will be improved, so that [Korean vps] pages in the network from remote servers can be synchronized with pages in the replicated server or buffer. The solution is to transfer new network content directly from the server to the cache when the network content changes, or copy the network content of the data source server to the cache server as real-time as possible when the access to the network content increases.