title: fileExists() vs CFHTTP checking remote files
body: <p>Is the fileExists remote file checking uses cfhttp head?</p>
  
  <p>I'm concerned on the speed of fileExists over CFHTTP when checking remote files</p>
  
  <pre><code>&lt;cfset imgExist = FileExists('https://qph.fs.quoracdn.net/main-qimg-e8b07145ae25974d4902168818241326.webp') &gt;
  &lt;cfdump var="#imgExist#"&gt;
  -- Returns Yes --
  </code></pre>
  
  <p>Is the FileExists function uses CFHTTP head?</p>
  
  <pre><code>&lt;cfhttp method="head" url="someimage" resolveurl="no" throwonerror="no" timeout="2" /&gt;
  </code></pre>
  
  <p>What is the advantage of FileExists over CFHTTP when checking if the remote file exists?</p>
  
  <p>Also is FileExists better than CFHTTP in terms of server load?</p>