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Also, I only skimmed the article, but it seems like the heavy lifting of serving images is done by the Google infrastructure instead of the one server.

• zorked 10y ago
  Serving images is usually just a wrapper around sendfile() and is rather trivial.
  • klibertp 10y ago
    I'd advise you to go read Nginx source if you want to see how "trivial" it is... :)