For a link to django scaling check out this highly scalable report
I do not know that the structure itself is an obstacle, but rather that the age of the frame is a big problem. While it has been around for a while, it has not been popular for so long. Take a look at many of the best websites on the Internet. What framework does Google work in? Or Yahoo! or Facebook or Amazon or Digg or the New York Times? More or less they are property. For example, Facebook uses dozens of languages ββto run its systems. Twitter, which is the parent of the RoR poster, also uses Scala for its API (80% of their traffic).
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