Danila Vershinin

Cacheability makes your WordPress site a better HTTP citizen, improving SEO and cache efficiency.
<h4>Free Features</h4>
Soft 404 Fix
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.
Cacheability fixes this by returning proper 404 status codes when:
<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>
Smart Cache-Control Headers
Automatically adds <code>s-maxage</code> headers so Varnish, NGINX, and CDNs can cache your pages efficiently without affecting browser caching behavior.
<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>
Upgrade to <a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Cacheability Pro</a> for advanced features:
<ul>
<li>Cache Warming — Automatically warm pages after purging so visitors never hit cold cache</li>
<li>Conditional GET (304) — Return 304 Not Modified for unchanged content, saving bandwidth</li>
<li>ESI Support — Cache pages with dynamic nonces (comments, login forms)</li>
<li>Rate-Limit Safe — Smart request queuing to avoid 429 errors</li>
<li>Sitemap Warming — Warm all pages from sitemap after full purge</li>
<li>WP-CLI Commands — <code>wp cacheability warm</code> and more</li>
<li>Priority Support — Get help when you need it</li>
</ul>
<a href="https://www.getpagespeed.com/web-apps/cacheability-pro" rel="nofollow ugc">Get Cacheability Pro →</a>

Cacheability

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

oj.dupuis

Based on Varsnish plugins by pkhamre, wfelipe, eitch, but heavily forked for 
extensibility.
WordPress Varnish Purges is a plugin that purges new and edited content, it’s 
intent is to be usable for a multi-site installation, to support all necessary 
purge orders for wordpress and to be expandable via extensions.
This plugin purges your varnish cache it’s intent is do do it for any action 
taken. This plugin supports what is called extensions that can be added to add 
special purges for specific wordpress plugins.
This plugins is mainly aimed at multi-sites installations (but can be used on a mono site installation) and requires some knowledge about varnish and vcl files.
<h3>Planned in a really near future</h3>
<ul>
<li>update wordpress VCL (done commit 
d75458e688caa201cf353c54410b42d000f63140)</li>
<li>extension check for a warning when unsupported plugins or widget is 
installed.</li>
<li>support for nextgen gallery</li>
<li>wiki, especially for varnish configuration.</li>
</ul>
<h3>Donate</h3>

Plugin Varnish Purges

Based on Varsnish plugins by pkhamre, wfelipe, eitch, but heavily forked for

Cacheability vs Plugin Varnish Purges