Good caching policies is one of performance’s best friends, and it can be your new best friend too. Get friendly with intermediary and browser caches by taking control over your WordPress powered website’s HTTP <code>Cache-Control</code> headers.
This is not a caching plugin in itself, but will enable you to leverage existing standard compliant caching systems better. You can set different policies for different kinds of pages to suite your website’s needs. The Cache-Control for WordPress plugin allows you to set different policies for shared/intermediary and private caches. The plugin sets some sensible defaults for a medium traffic blog that publishes an update or two per week.
You can safely set long <code>Cache-Control</code> times as the <code>max-age</code> values is lowered automatically before a scheduled post is about to be published.
Private pages (logged in users, the admin interface, etc.) will not be cached.
The plugin has <a href="https://www.ctrl.blog/entry/wp-cache-control-documentation.html" rel="nofollow ugc">extensive documentation</a>.

Cache-Control

Configurable HTTP Cache-Control response headers for webpages generated by WordPress.

ggriesser

Optimize the caching behavior of your Website! Smart WordPress by <a href="https://www.velocious.io/" title="Smart WordPress FAQs" rel="nofollow ugc">Velocious.io</a> only reloads pages if something has been changed.
A huge number of users abandon websites that are slow to load. That’s no surprise! No one likes to browse a slow site!
With Smart WP you are able to make your WordPress page load in a better way: Your content gets stored in your visitors browsers and is only reloaded if something changed.
This way you can reduce the performance of your and provide your users with an improved experience.
Your users will love it!
By using Smart WordPress you are able to:
<ul>
<li>change the configuration of your ETags</li>
<li>modify the configuration of the Last-Modified Header</li>
<li>alter the configuration of the Cache-Control Header</li>
</ul>
Acknowledges: This plugin is based on the excellent work by George Notaras. It is a fork of his deprecated Add Headers Plugin – a plugin I have used myself for a bunch of years.

Smart WordPress

Optimize the caching behavior of your Website the easy way and reload pages only if something has been changed.

Cache-Control vs Smart WordPress