What is CDN?
CDN, the full name of content delivery network (content delivery network), is an intelligent virtual network built on the basis of the existing network, using cache servers deployed in various geographical locations, by distributing content to the nearest node to the user, to improve the response speed and speed of user access.
The core idea of CDN is to reduce the response time of user requests and improve the user experience when accessing by distributing content to the nodes closest to users. CDN accelerates the distribution of content worldwide through technical means such as content caching, load balancing, and intelligent routing.
The role of CDN.
The role of CDN is mainly reflected in the following aspects:
1.Increase the speed of access.
CDN reduces the response time of user requests by distributing content to the nodes closest to users, improving the responsiveness and speed of user access. Users can get faster access to web pages, **, and more, which improves the user experience.
2.Reduce the pressure on the origin server.
Since CDNs can cache content and distribute it to individual nodes, user requests can be directly responded to by the nearest CDN node, reducing direct requests to the origin server and thus reducing the pressure on the origin server. This can effectively protect the origin server and improve the stability and reliability of the high-concurrency website.
3.Defend against DDoS attacks.
CDNs can distribute and process user requests through intelligent routing and load balancing, effectively defending against distributed denial-of-service (DDoS) attacks. CDNs can distribute attack traffic to various nodes for processing, protecting the origin server from attacks.
4.Accelerate large file transfers.
For the transfer of large files, such as **, software installation packages, etc., CDN can provide faster **speed and stable transfer experience. Users can get the content of large files faster, and at the same time, it also reduces the load on the origin server.
5.Improved network stability.
Because CDNs can distribute content to nodes around the world, users can obtain content through nearby nodes, thereby reducing network congestion and transmission delays, and improving network stability and reliability.
As a content delivery network technology, CDN improves the response speed and speed of user access by distributing content to the node closest to the user, reduces the pressure on the origin server, resists DDoS attacks, accelerates large file transfers, and improves network stability.
The role of CDN is becoming more and more important in current Internet applications, especially for large applications and applications, CDN can effectively improve user experience, protect the origin server, and improve the stability and reliability of the Internet.
Hopefully, the above will help you better understand CDN and what it does. If you have any questions, please feel free to continue**.