Hinaloe

<blockquote>
You no longer have to use this plugin because it was merged to <a href="https://ja.wordpress.org/plugins/public-post-preview/" rel="nofollow ugc">PPP plugin</a> at v2.6.0.
</blockquote>
This plugin send <code>Cache-Control: no-cache, must-revalidate</code> header when show <a href="https://wordpress.org/plugins/public-post-preview/" rel="ugc">public-post-preview</a> post.
In other word, that make skip cache of CDN (like CloudFlare, CloudFront… and other), or Proxy-Cache (Like Nginx). 
So, outside people always can see newest draft, and there is no need extra time to close public draft.
This plugin needs PHP 5.3+
Note: If you’re using CloudFront, you should also use <a href="https://wordpress.org/plugins/c3-cloudfront-clear-cache/" rel="ugc">C3 Cloudfront Cache Controller</a>

Non Cache Public Post Preview

Disable cache when show public post preview post

Dominik Schilling

Share a link to anonymous users to preview a draft of a post (or any other public post type) before it is published.
Have you ever been writing a post with the help of someone who does not have access to your site and needed to give them the ability to preview it before publishing? This plugin takes care of that by generating an URL with an expiring nonce that can be given out for public preview.
Previously this plugin was maintained by <a href="https://profiles.wordpress.org/sivel/" rel="nofollow ugc">Matt Martz</a> and was an idea of <a href="https://profiles.wordpress.org/jdingman/" rel="nofollow ugc">Jonathan Dingman</a>. Photo by <a href="https://unsplash.com/photos/opened-book-on-grass-during-daytime-bhBONc07WsI" rel="nofollow ugc">Annelies Geneyn</a>.
<h3>Usage</h3>
<ul>
<li>To enable a public post preview check the box in the document settings. In the classic editor it’s in the “Publish” meta box.</li>
<li>The link will be displayed if the checkbox is checked, you can copy and share the link with your friends.</li>
<li>To disable a preview uncheck the box again.</li>
</ul>

Public Post Preview

This is one of the very few plugins I install on literally every single site I work on. Absolutely invaluable.

Must Install

This plugin has been very helpful in sharing articles for feedback before they are published. Straightforward and easy to use.  Thanks!

Works Great

This plugin does exactly what it needs to and nothing more. Very useful for previewing content before publication.

Very useful and simple plugin

A must have plugin

Allow anonymous users to preview a draft of a post before it is published.

Non Cache Public Post Preview vs Public Post Preview