Prefetching is a functionality that lets us fetch content before it reaches users. It can be very useful on occasion. Let’s look at two examples:

  • Your website sees low traffic, but when a user arrives and requests an object, you still want it to be served by the CDN's cache.

  • You’re going to launch your new website and you’re expecting a great influx of visitors, which translates into a high number of requests to the CDN. If the CDN is cold and doesn’t have any objects cached, when you go live a flood of requests to your origin servers could cause systems to collapse.

To find out how to do a prefetch, click this link.

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