title: Scaled out Azure App Service too slow
body: <p>When I try to scale out my Azure Web App I experience very slow response times for requests on the second or third instance of the app.
  This seems to happen because the other instances were in cold mode and had to switch into hot mode once the load balancer redirected the request to them.</p>
  
  <p>The problem is that in my scenario most of the time there isn't going on much on the system so probably only one instance will be used via the load balancer but approx four times a day there is a peak and I need more than one instance. But if these instances are in cold mode and had to wake up first it actually makes things worse.</p>
  
  <p>The question is what to do?</p>
  
  <p>I've already set the app to "always on" and ARR Affinity to "off".</p>
  
  <p>In the past I've already experienced problems with my app going into some sort of sleep mode even though the app was set to "always on". I solved this by setting up a scheduler task that called the app every hour. But I don't think this would work with multiple instances anymore because the task would only call one instance and the other instances would still stay in sleep mode.</p>
  
  <p>Any suggestions?</p>