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I think he is referring to asset hosts in #20. Rails does it pretty easily. ActionController::Base.asset_host = "assets.example.com"

You are right, Subbu. Rails is nothing but common sense; it leaves developers only to do development and nothing else.

Or better yet, split assets over 4 asset subdomains:

ActionController::Base.asset_host = Proc.new { |source| "assets#{source.hash % 4}.example.com" }