It's interesting that they keep the original image upload, but toss out the generated variants (resized or optimized versions) after 20 days. When those objects are requested again, they perform those optimizations on demand.
Seems like keeping a log of image names and locations and then requesting millions of them at the same time might be a good way to cause performance problems on their service.
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[ 2.8 ms ] story [ 10.7 ms ] threadSeems like keeping a log of image names and locations and then requesting millions of them at the same time might be a good way to cause performance problems on their service.