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Caching for a snappier website.
When a WordPress page loads normally, it goes through:
<ol>
<li>PHP execution</li>
<li>Database queries (often 20-50+ queries)</li>
<li>Theme processing</li>
<li>Plugin execution</li>
<li>HTML generation</li>
</ol>
With Snappy file-based caching, it skips all that and just serves a static HTML file.
Estimates for performance improvement:
<ul>
<li>2x faster is conservative and achievable for most sites</li>
<li>5x faster is realistic for database-heavy sites</li>
<li>10x faster is possible for poorly optimized sites with many plugins</li>
</ul>
<h4>Advanced Version</h4>
Snappy is fully capable with its core caching capability, but if you want or need additional optimization and control, advanced settings are available at <a href="https://snappywp.me/" rel="nofollow ugc">snappywp.me</a>.
<ul>
<li>HTML, CSS, and JavaScript minification</li>
<li>GZIP compression</li>
<li>Lazy loading for images and videos</li>
<li>Video embed optimization (YouTube/Vimeo facades)</li>
<li>Font preloading</li>
<li>Database cleanup (spam, revisions, transients)</li>
<li>Automatic weekly database optimization</li>
<li>Cache preloading from sitemap</li>
<li>Defer JavaScript with exclusions</li>
<li>Critical CSS extraction and inlining</li>
<li>WordPress Heartbeat control</li>
<li>Resource hints (preload, prefetch, DNS-prefetch)</li>
<li>Browser caching headers via .htaccess</li>
<li>Security headers (X-Frame-Options, CSP, etc.)</li>
<li>Cloudflare integration with optimized settings</li>
<li>CDN integration with URL rewriting</li>
<li>Settings import/export</li>
<li>Self-hosted update system</li>
</ul>

Snappy

nigro.simone

Speed Up – Page Cache was constructed for made caching dead simple. Simple one-click install. That’s it.
When a page is rendered, php and mysql are used. Therefore, system needs RAM and CPU. 
If many visitors come to a site, system uses lots of RAM and CPU so page is rendered so slowly. In this case, you need a cache system not to render page again and again. Cache system generates a static html file and saves. Other users reach to static html page.
After a html file is generated your webserver will serve that file instead of processing the comparatively heavier and more expensive WordPress PHP scripts.
The static html files will be served to the vast majority of your users: 
– Users who are not logged in. 
– Users who have not left a comment on your blog. 
– Or users who have not viewed a password protected post. 
99% of your visitors will be served static html files. One cached file can be served thousands of times.
In addition, the site speed is used in Google’s search ranking algorithm so cache plugins that can improve your page load time will also improve your SEO ranking.

Speed Up – Page Cache

A very simple plugin to make your site run lightning fast with page caching.

Snappy vs Speed Up – Page Cache