The full name of CDN is Content Delivery Network, which is a content delivery network. The basic idea is to avoid bottlenecks and links on the Internet that may affect the speed and stability of data transmission as much as possible, so that content transmission is faster and more stable. By placing a layer of intelligent virtual network on top of the existing Internet composed of node servers throughout the network, the CDN system can redirect user requests to the service node closest to the user in real time based on comprehensive information such as network traffic and connection of each node, load status, distance to the user, and response time. Its purpose is to enable users to obtain the content they need nearby, solve the congestion of Internet networks, and improve the response speed of users when accessing websites.
Advantage: 1. Don't worry about your website visitors, you can quickly open the website at any time, anywhere, and by any network operator. 2. The procurement cost of various server virtual hosting bandwidth, including later operation and maintenance costs, will be greatly reduced. 3. The direct benefits to the website are: traffic, consultation volume, customer volume, and order volume will be greatly improved.
In fact, CDN is not a mystery, and we often use this technology in our daily development process, such as referencing JS, CSS, image, and swf. Here are a few free CDN public libraries:
Baidu http://cdn.code.baidu.com/
360 http://libs.useso.com
BootCDN http://www.bootcdn.cn/
Seven Bulls Cloud https://www.staticfile.org/
Sina Cloud http://lib.sinaapp.com/
He patted the clouds again http://jscdn.upai.com/ |