title: nginx and ELB 499 response
body: <p>I am using nginx as reverse proxy server under ELB.
  Every two days I start to get 499 responses. When I restart nginx the problem is solved for the next two days.</p>
  
  <p>A solution I saw for this problem is to change the idle timeout of the ELB but it does not explain why restartin nginx temporary solved my issue.</p>