title: Node.js function without callback
body: <p>I have a node.js server. When a user requests a page I call a function that pulls some info from db and services the request. Simple function with callback then execute response.send</p>
  
  <p>I need to perform secondary computation/database updates which are not necessary for rendering the page request. I don't want the user to wait for these secondary ops to complete (even though they take only 200 ms.)</p>
  
  <p>Is there a way to call a function and exit gracefully without callback?</p>