Holographic Extreme Cache vs WeAmp Cache Control for ModPageSpeed

Holographic Extreme Cache is a simple, yet powerful, static page caching plugin with safe defaults. It includes static HTML page caching, smart cache clearing, safe WooCommerce exclusions, debug response headers, a basic preload system, a cache health check, safe HTML minification, WordPress emoji disabling, browser cache helper rules, new-upload WebP conversion where supported, a homepage speed test, cache diagnostics and an uninstall cleanup option. Caching is not enabled automatically on activation. Open Holo-Cache in the WordPress admin area and use the Setup tab or enable caching manually. Features Static HTML page caching. PHP fallback cache delivery. advanced-cache.php drop-in support. Optional Apache rewrite helper rules. Manual clear cache button. Admin bar cache clearing. Automatic cache clearing when content changes. Basic smart purge for posts, pages, archives, taxonomy archives, authors and homepage. Cache lifetime control. Basic preload for homepage, recent posts and recent pages. Combined cache and preload controls for simpler setup. Safe default exclusions. WooCommerce cart, checkout and account exclusions. Logged-in user bypass by default. POST, AJAX, REST, preview and unsafe query string bypass. Cache size and cached page count. Last purge and last preload time. Basic cache health check. Other caching plugin conflict detection. Debug response headers. Strong cached HTML and inline CSS minification. Disable WordPress emoji files option. Browser cache helper. New-upload WebP conversion for JPEG and PNG images where the server supports it. Safe picture/source markup for generated WebP files, with original images kept as fallbacks. Clear server requirement messaging when WebP conversion is unavailable. Gzip and Brotli detection. Setup tab with one-click WP_CACHE handling where wp-config.php is writable. Setup checklist for the main cache, speed test, preload, health and optional image steps. Simple homepage speed test for cache-off and cache-on comparison with expandable diagnostics. Safe and Balanced modes. Optional uninstall cleanup. Privacy Holographic Extreme Cache does not collect analytics, does not track visitors and does not send site data to a third-party service. The plugin stores cache files, configuration helper files and optional log files inside its own folder under the WordPress uploads directory. Logging is off by default. Uninstall The plugin can remove its settings, cache files, configuration files, log files and scheduled events on uninstall if the uninstall cleanup option is enabled before uninstalling. If uninstall cleanup is not enabled, settings and generated files are left in place so the site owner can remove or inspect them manually.

This plugin is the control panel for ModPageSpeed — a web server optimization module for nginx and Apache. ModPageSpeed must be installed and running on your server for this plugin to function. It is not a standalone caching plugin. The plugin does three things: Enables full-page caching — adds Cache-Control: public, max-age=N to anonymous page responses (WordPress does not send this by default), with explicit bypasses for logged-in users, WooCommerce cart/checkout/account pages, search, feeds, and 404s. Keeps the cache fresh — calls the ModPageSpeed purge API when you publish, update, or delete content, when comments change, when stock levels change, and when terms or theme settings change. Gives you control in WP Admin and WP-CLI — per-post-type TTLs, cookie bypass list, excluded URL patterns, a first-run setup wizard, and wp pagespeed flush|status|test-connection commands. Works with both ModPageSpeed product lines (auto-detected), with one important difference: ModPageSpeed 2.0 caches full HTML pages itself — the plugin’s headers and purge calls drive the module’s page cache directly. mod_pagespeed / ngx_pagespeed 1.1 does not cache HTML (it is a streaming rewriter; its in-place optimization caches only images, CSS, and JS). Full-page caching on 1.1 requires an external cache layer in front (nginx proxy_cache, Varnish, or a CDN) plus ModifyCachingHeaders off or DownstreamCachePurgeLocationPrefix — with 1.1’s default ModifyCachingHeaders on, the module replaces this plugin’s Cache-Control header on rewritten HTML. On 1.1, the plugin’s purge calls evict optimized sub-resources and metadata, not HTML pages. Server requirements ModPageSpeed 1.1 (v1.15.0+r3 or later) or ModPageSpeed 2.0 (v2.0.0 or later) installed on your web server. For 2.0: the worker admin API enabled (--api-port). For full logged-in-user correctness an nginx cookie-bypass map block is required — the setup wizard provides a copy-paste snippet and verifies it. WP-CLI wp pagespeed flush [--url= ] — purge the home page (and posts page), or one specific URL on this site. wp pagespeed status — detected product, version, license tier, purge prerequisites, and last-purge status. wp pagespeed test-connection — verify the admin API is reachable and correctly configured (read-only, never purges). License This plugin is free software, licensed under the GNU General Public License v2.0 or later. The full GPL-2.0 license text is bundled with the plugin in the LICENSE file. Third Party Services This plugin makes HTTP requests to the operator-configured ModPageSpeed admin API URL. Data sent includes page URLs (for cache purging) and an API key (for authentication). No data is sent to We-Amp or any third party.