What is a Video Site CDN

As we all know, video is the most bandwidth-consuming transmission method on the Internet. Therefore, video sites have high requirements for bandwidth, but the amount of visits and bandwidth that the server can bear is limited. Therefore, video sites must use a video site CDN to reduce the load on the video server.

What is a video site CDN? CDN, or content distribution network, is an intelligent virtual network based on the existing Internet. By placing node servers in various locations on the network, the required content can be obtained on nearby servers, effectively solving network congestion and other problems.

The construction of a video website CDN generally consists of two parts: a cache server and a content distribution server. Cache servers (CDN nodes) are distributed all over the world and store relevant video content through strategies; the content distribution server distributes the video content on the video server to each cache server according to a certain strategy.

A simple example: When a video site needs to publish a new video, the video server first sends the video content to the content distributor on the video site. Then, the content distributor sends the video content to the forwarding local cache server according to the policy. When a user clicks on a video on a video website, the video website will cooperate with the cdn network of the video website according to the user's geographic location (location) and network conditions (telecommunications, China Unicom) to find the best cache server for the user.

Of course, the use of a video website CDN can not only reduce the bandwidth requirements of the video server, but also effectively solve the communication and connection problems, while hiding the real IP address and protecting the video server from attacks.

Moreover, there are several very important points when using a video CDN:

1. Provide the most economical and optimal site acceleration plan according to the operation of each video website, adopt different acceleration or solutions for static, dynamic, hot content, cold video and other content and forms, accelerate node layout optimization, and solve the network Bottlenecks, while greatly speeding up website access and saving operating costs;

2. The self-developed anti-theft chain technology protects the copyright of the content and the interests of the website, and avoids the waste of bandwidth.

3. The unique video random drag technology improves the viewing experience of videos, especially large videos (MPEG-4), and saves bandwidth;

4. Realize content storage, use distributed storage to optimize resources, and avoid excessive repetition of content cache;

5. Cold content and large video pre-caching to enhance video fluency.

6. Partition the disk on the server to increase the speed of reading and writing and video playback.