It was a while ago (2011), and it was specifically with streaming videos using the RTMP protocol... so it might have been specific to that. But here is a StackO

It was a while ago (2011), and it was specifically with streaming videos using the RTMP protocol... so it might have been specific to that. But here is a StackOverflow answer someone wrote that explained the general idea of how CDN's might slow down the process for infrequently-accessed files: http://stackoverflow.com/a/7800805/477513 http://stackoverflow.com/a/7800805/477513 EDIT: In re-reading that S.O. answer, I see now that this is specific to LARGE files (these videos were 50+ MB each)... so your use-case of HTML files and images for a static site would probably not result in this performance problem.