adelong01

QuantumCache accelerates WordPress by caching database query results and content fragments used to build pages. Instead of caching entire HTML pages, it reduces the database work required to render pages while preserving WordPress’s native invalidation behavior.
It is not an output buffer or page cache, and it does not replace existing page caching solutions.
<h3>Features</h3>
<ul>
<li>Caches the results of the main front-end <code>WP_Query</code> for anonymous requests.</li>
<li>Tag-based invalidation: purge by post ID, post type, or taxonomy.</li>
<li>Fragment caching for <code>the_content</code> (classic) and core blocks such as <code>core/post-content</code>, <code>core/latest-posts</code>, <code>core/archives</code>, and <code>core/navigation</code>.</li>
<li>Multiple storage modes:
<ul>
<li>Auto – use Redis if available, otherwise fall back to MySQL.</li>
<li>Redis – fastest mode; uses the PHP Redis extension.</li>
<li>MySQL – portable fallback using compact tables (<code>qc_entries</code>, <code>qc_tagmap</code>).</li>
</ul>
</li>
<li>Compatible with the Redis Object Cache drop-in.</li>
<li>Avoids wp_options and postmeta storage – all cache data is stored in Redis or 
QuantumCache-owned database tables.</li>
<li>Multisite-aware: per-site prefixes and per-site tables.</li>
<li>WP-CLI commands: <code>wp quantumcache flush</code> and <code>wp quantumcache status</code>.</li>
<li>Metrics data layer: persistent hit, miss, store, and purge event counters available via <code>Metrics::totals()</code> and <code>Metrics::deltas()</code>.</li>
</ul>
<h3>Performance summary</h3>
In benchmarks on a plugin-heavy WordPress site (WooCommerce + Yoast SEO), 
QuantumCache reduced per-request database queries by up to ~99% on cached pages 
and achieved cache hit rates exceeding 97% with Redis.
In the benchmark environment:
<ul>
<li>Redis mode reduced warm TTFB by roughly 23–27% and total response time by 18–21% versus an uncached baseline.</li>
<li>MySQL fallback mode delivered modest improvements (~3–10%) when Redis was unavailable.</li>
</ul>
Actual results depend on theme complexity, plugin load, database topology, and traffic patterns.
<h3>When to use QuantumCache</h3>
QuantumCache is useful when:
<ul>
<li>Your site already uses a page cache (such as a CDN, reverse proxy, or caching plugin) but WordPress still performs significant database work.</li>
<li>You want faster response times without relying solely on full-page caching.</li>
<li>Your hosting environment supports Redis, or you want a portable MySQL fallback.</li>
</ul>
QuantumCache complements page caching rather than replacing it.
<h3>What QuantumCache does NOT do</h3>
QuantumCache is not a page cache or full HTML cache.
It does not replace solutions such as: 
* CDN caching 
* reverse proxy caches 
* traditional WordPress page caching plugins
Instead, QuantumCache reduces the database work required to build pages, making those systems more effective.
<h3>Debug headers (optional)</h3>
Enable Settings → QuantumCache → Send X-QC debug headers to view cache status in HTTP responses: 
* <code>X-QC-Main: HIT | MISS | STORE</code> 
* <code>X-QC-Store: AUTO | redis | mysql</code> 
* <code>X-QC-Hydrated:</code> number of posts loaded from cache
Append <code>?qc_nocache=1</code> to any URL to bypass caching for that request.
Debug headers are sent only when explicitly enabled in settings and contain no 
personal or user-specific data.
<h3>WP-CLI commands</h3>
QuantumCache provides the following WP-CLI commands:
wp quantumcache status 
Shows the active backend, storage mode, and lifetime cache counters.
wp quantumcache flush 
Clears all cache entries for the current site.
Use –yes to skip the confirmation prompt.
<h3>QuantumCache Pro</h3>
QuantumCache Pro extends the core engine with advanced caching capabilities for WooCommerce and logged-in users.
See: https://quantumcache.io
<h3>Privacy</h3>
QuantumCache does not collect, send, or log personal data. 
It stores cache entries in Redis or its own MySQL tables. 
Other plugins on your site may handle cookies or data independently. 
No remote requests are made, and no data is transmitted to external servers.

QuantumCache

Speeds up WordPress by caching database queries and fragments for anonymous visitors using Redis or MySQL, without storing cache data in wp_options.

Blizhost

<h3>🚀 Blizhost CloudCache Purge: Speed, Security, and Performance for Your WordPress Site</h3>
Blizhost CloudCache Purge is the essential plugin for those seeking speed, enhanced security, and optimized SEO for WordPress sites. Exclusive to Blizhost customers, this plugin integrates with CloudCache, a powerful and optimized solution for high-traffic websites, designed to significantly improve performance and protect your site from threats.
<h4>🎯 Why Use Blizhost’s CloudCache?</h4>
<ul>
<li>Extreme Speed: CloudCache delivers your site’s content directly from the server’s RAM, enabling loading speeds up to 300x faster.</li>
<li>Enhanced Security: Robust protection against brute force attacks, exploitable vulnerabilities, and unauthorized access attempts to administrative pages.</li>
<li>Optimized SEO: Loading speed is a crucial factor for Google rankings and other search engines. With CloudCache, your site becomes significantly faster, improving its ranking in search results.</li>
<li>High Performance under Heavy Traffic: Perfect for high-traffic sites, CloudCache ensures your site remains stable and fast, even during traffic spikes.</li>
<li>Built for HTTP: Unlike solutions such as Squid, Apache, or Nginx, CloudCache is 100% focused on the HTTP protocol, maximizing performance for WordPress sites.</li>
</ul>
<h4>🔒 Top-notch Security and Performance</h4>
CloudCache offers advanced protection, with features similar to services like Sucuri and Cloudflare, ensuring your WordPress site is secure and running at peak performance:
<ul>
<li>Brute Force Attack Protection: Prevents malicious login attempts to the WordPress admin area by limiting the number of failed access attempts.</li>
<li>Vulnerability Exploit Defense: Automatically monitors and blocks attempts to exploit known vulnerabilities in WordPress and its plugins.</li>
<li>DDoS Mitigation: Protects your site from distributed denial-of-service (DDoS) attacks, keeping it available even during malicious traffic surges.</li>
<li>Security Rules: Advanced filtering to block malicious traffic before it reaches your site.</li>
<li>Sensitive Page Protection: Additional security layer for critical areas, such as login and admin pages.</li>
</ul>
<h4>💡 Immediate Benefits of Blizhost CloudCache Purge</h4>
<ul>
<li>Automated and Intelligent Caching: Whenever you publish, edit, or delete a post, page, or comment, the cache is automatically updated, ensuring that changes are quickly and accurately reflected.</li>
<li>Full WordPress Compatibility: The plugin seamlessly integrates your WordPress with Blizhost’s CloudCache, optimizing both speed and security.</li>
<li>SEO Improvement: Site speed is a critical factor for SEO, and with CloudCache, you’ll experience fast and efficient loading, helping boost your rankings on Google.</li>
</ul>
<h4>🔧 How Does Blizhost CloudCache Purge Work?</h4>
<ol>
<li>
Automatic and Intelligent Cache Clearing:
<ul>
<li>The cache is automatically updated when you make changes to content, such as posts, pages, or comments. Relevant pages like sitemaps are also refreshed, ensuring that changes are reflected.</li>
<li>When important settings like title, description, or modifications to the WordPress Customizer are made, the entire cache is cleared, ensuring that your site reflects all changes correctly.</li>
</ul>
</li>
<li>
Manual Cache Control:
<ul>
<li>The cache can be manually cleared via simple buttons in the WordPress dashboard or toolbar, giving you full control over cache behavior.</li>
</ul>
</li>
</ol>
<h4>🌟 What is CloudCache?</h4>
CloudCache is an exclusive technology from Blizhost, inspired by systems used by major companies like Wikipedia, The New York Times, Facebook, and Twitter. It delivers your site’s content directly from the server’s RAM, resulting in ultra-fast loading, ideal for high-traffic websites.
<h4>🧩 Full Compatibility with Plugins and Themes</h4>
The Blizhost CloudCache Purge is fully compatible with key tools in the WordPress ecosystem, including:
<ul>
<li>WooCommerce: For high-performance online stores.</li>
<li>Cloudflare: Integration with the CDN and security features.</li>
<li>All caching plugins: Including LiteSpeed Cache, W3 Total Cache, WP Rocket, and WP Super Cache.</li>
<li>AMP: Full support for Accelerated Mobile Pages (AMP).</li>
<li>Page Builders: Compatible with Elementor, Divi, WPBakery, and more.</li>
<li>Form Plugins: Such as Contact Form 7, Gravity Forms, WPForms, etc.</li>
</ul>
Note: This plugin was developed exclusively for Blizhost customers. Using it on other hosting providers will not bring the same benefits, as CloudCache was created to operate within our optimized infrastructure, ensuring speed, security, and support for high traffic.

Blizhost CloudCache Purge – Speed, Security, and Optimization

Automatic Cache Clearing and CloudCache Integration to Boost Speed and Protect Your Site with Enhanced Security.

QuantumCache vs Blizhost CloudCache Purge – Speed, Security, and Optimization