title: Web php load so slow after long time (30 minutes) no use at Chrome
body: <p>I am having 1 problem with php web. My web using php 7.0 and httpd at Linux ubuntu. </p>
  
  <p>When I browser the web at localhost, it working file. But after I deployed. The first request is ok. but if I not request the web long time, about 30 minutes. It take very long time to response. When I see at chrome console, it display pending. </p>
  
  <p>After I waiting loading, ~ 1 minutes. The next requests are fine, very fast</p>
  
  <p>I checked the code, nothing big query.</p>
  
  <p>Here is my php config</p>
  
  <p>Could you please help to give me some suggestions, thanks so much!</p>