title: google cloud compute load balancer 504 error
body: <p>I have the following setup.</p>
  
  <p>2  x  gce  n1.standard instances running nginx/php5-fpm</p>
  
  <p>1  x  cloud SQL d8 instance with both GCE instances connected
  to it. </p>
  
  <p>The front end servers are running a stripped down version of osCommerce-2.3.3.4 with NO admin section on the front end. Its just the catalog portion of osC. </p>
  
  <p>I ran a load test with load impact, and the site is unusable at around 50-100 users. I am only looking to support at absolute max 500/users at any give time. We average around 130-170 on our current server. </p>
  
  <p>I am not looking for a complete explanation but any helpful places to check, things to try, stuff to read, I just need a direction to go in to get this cloud platform working like we wanted. </p>
  
  <p>Thanks in advance. </p>