title: How to leverage browser caching in Rails 4?
body: <p>I am using GTMetrix to see my site speed and it is showing me this (check below image). </p>
  
  <p>How can I Leverage browser caching to speed up the site loading speed in Rails 4?</p>
  
  <p>To defer parsing JS, I have already put </p>
  
  <pre><code>&lt;%= javascript_include_tag 'application' %&gt;
  </code></pre>
  
  <p>before /html tag. </p>
  
  <p><a href="https://i.stack.imgur.com/SRx0R.png" rel="noreferrer"><img src="https://i.stack.imgur.com/SRx0R.png" alt="enter image description here"></a></p>