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CDN is a content delivery network built on top of the network, relying on edge servers deployed in various locations, through the central platform of load balancing, content distribution, scheduling and other functional modules, so that users can get the content they need nearby, reduce network congestion, improve user access response speed and hit rate. The main technologies are content storage and distribution.
Use in China
For some reason, many public free CDN resources are not very useful in mainland China, and even the paid ones have certain limitations, such as a limited number of refreshes per day. So is there a public CDN that will benefit mankind, or mainland China?
This is the only public CDN with a license in mainland China, and access in practice is extremely fast (although the website is slow to open)