title: Azure function instance and scaling
body: <p>By creating Azure function app service under consumption plan with single HTTP trigger function in it, can I control that Azure function app service number of instances serving the incoming request? If yes, how to control app service instance?</p>
  <p>If no, what is rationale behind Azure scaling or instantiation logic? If I have singleton static resource like cosmos db connection how it can be shared across the azure function app service instances? to improve performance.</p>