title: How often Google AMP Cache will be updated if no one visit a page?
body: <p>In Google AMP documentation, it says "Each time a user accesses AMP content from the cache, the content is automatically updated, and the updated version is served to the next user".</p>
  
  <p>Then what if a content of a AMP page is updated but no one visits the page for few days? Will it be updated after certain amount of time passed?</p>
  
  <p>Thank you</p>