title: azure webapps 404 error
body: <p>I have web application developed in Spring boot (REST services) which is deployed on Azure webapps (Azure app service). My plan is Standard: 1 Small.</p>
  
  <p>The application has been running smoothly since 2 weeks. All of a sudden, today, the application went down. Consumer application which calls these REST services started experiencing 404 errors (The origin server did not find a current representation for target resource or it is not willing to disclose that one exists)</p>
  
  <p>When I check the logs, I did not find any root cause which will bring whole application down. This was second time it happened and this time too I am unable to find root cause (Memory usage/CPU usage seems fine).
  "Always on" setting is turned ON.</p>
  
  <p>I have following questions: <em>1) What may be the root cause and Is there a way to find it ?</em></p>
  
  <p>2) <em>Is there way (in azure webapps) to know when application goes down and auto scale ? (I have already set auto scale rules for CPU usage and Memory usage but this did not help).</em></p>