Danila Vershinin

<p>Cacheability makes your WordPress site a better HTTP citizen, improving SEO and cache efficiency.</p>
<h4>Free Features</h4>
<p><strong>Soft 404 Fix</strong></p>
<p>WordPress returns HTTP 200 for empty search results, invalid tag pages, and empty category archives. Google marks these as “soft 404” errors in Search Console, hurting your SEO.</p>
<p>Cacheability fixes this by returning proper 404 status codes when:</p>
<ul>
<li>Search results are empty (<code>/?s=nonexistent</code>)</li>
<li>Tag archives are empty (<code>/tag/nonexistent/</code>)</li>
<li>Category archives are empty</li>
<li>Author archives are empty</li>
</ul>
<p><strong>Smart Cache-Control Headers</strong></p>
<p>Automatically adds <code>s-maxage</code> headers so Varnish, NGINX, and CDNs can cache your pages efficiently without affecting browser caching behavior.</p>
<ul>
<li>Search/404 pages: 1 hour cache</li>
<li>All other pages: 1 year cache (your purge plugin handles invalidation)</li>
</ul>
<h4>Cacheability Pro</h4>
<p>Upgrade to <a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Cacheability Pro</a> for advanced features:</p>
<ul>
<li><strong>Cache Warming</strong> — Automatically warm pages after purging so visitors never hit cold cache</li>
<li><strong>Conditional GET (304)</strong> — Return 304 Not Modified for unchanged content, saving bandwidth</li>
<li><strong>ESI Support</strong> — Cache pages with dynamic nonces (comments, login forms)</li>
<li><strong>Rate-Limit Safe</strong> — Smart request queuing to avoid 429 errors</li>
<li><strong>Sitemap Warming</strong> — Warm all pages from sitemap after full purge</li>
<li><strong>WP-CLI Commands</strong> — <code>wp cacheability warm</code> and more</li>
<li><strong>Priority Support</strong> — Get help when you need it</li>
</ul>
<p><a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Get Cacheability Pro <span aria-hidden="true" class="wp-exclude-emoji">→</span></a></p>


Cacheability

HTTP optimization for WordPress. Fixes soft 404 errors and adds smart cache headers.

iThemes

Chris Wiegman

<p>Better WP Varnish is based off of an old plugin called Varnish as a Service and is updated and improved to work with newer software and to make configuration easier.</p>
<h4>Compatibility</h4>
<ul>
<li>Should work with all Varnish 3 installations</li>
</ul>
<h4>Translations</h4>
<ul>
<li>English</li>
</ul>
<h3>License</h3>
<p>Released under the terms of the GNU General Public License.</p>


Better WP Varnish

The easiest way to maintain your varnish cache.

Cacheability vs Better WP Varnish