(The full name of CDN is ContentDeliveryNetwork, that is, Content Delivery Network. Its purpose is to add a new layer of network architecture to the existing Internet to publish the content of the website to the network "edge" closest to the user, so that the user can obtain the required content nearby and improve the response speed of the user visiting the website. . CDN is different from mirroring because it is smarter than mirroring, maybe you can do something like this: CDN = smarter mirror)
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