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I am changing CDNs and I would like to preload some content to AWS Cloud Front so that my origin server is not hammered during that transition. Any tips?

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Create your CloudFront distribution and...

  • make CloudFront the CDN in a randomly selected 1% of pageviews
  • write a script to request all commonly used image paths from the CloudFront distribution at whatever pace you prefer
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    Do you know of any CDNs that allow you to "preload" content by uploading it somewhere?
    – ckliborn
    Nov 20, 2011 at 23:16
  • Anything that isn't "origin-pull" essentially works that way. It removes the big benefit of origin-pull, though, which is that if you forget to put a file on the CDN it isn't a problem, the CDN just pulls it off your server. You could do this with CloudFront by switching to an S3 bucket backed distribution instead of a custom origin.
    – ceejayoz
    Nov 21, 2011 at 2:41
  • The first option described is really the only way to go, as the second option would only prime the cache in one Amazon edge location.
    – rmalayter
    Nov 22, 2011 at 16:15
  • @rmalayter Great point.
    – ceejayoz
    Nov 22, 2011 at 16:30

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