title: Which Nginx server actually respond with image data?
body: <p>I have two servers with Nginx running on both.</p>
  
  <p>On <strong>first</strong> server I'm enabling proxy_pass to <em>all</em> (png|jpg|gif)  and so on to <strong>second</strong> server.</p>
  
  <p>So my question is - Which server actually respond with image data?</p>
  
  <p>1) Second ->(bytes)-> First ->(bytes)-> Client<br>
  or<br>
  2) Second ->(bytes)-> Client</p>
  
  <p>I have a serious restriction in traffic on my <strong>first</strong> server and want <strong>second</strong> server which has not this restrictions to respond with all images.</p>
  
  <p>Can I do it like I do, or I need to actually use <strong>second</strong> server in all img tags?</p>
  
  <p>Thank you and have a nice day!</p>