UAU Ready
Description
Comet Cache Pro is aimed at sites with a high volume of pages, blogs with frequent content, and WordPress installations that need to reduce repeated queries, featuring page caching, browser caching, 404 error caching, feed caching, and configurable automatic expiration. It helps those seeking faster loading without relying on constant manual adjustments to server files or complex infrastructure rules.
Key Features of Comet Cache Pro
- Page caching
Generates static copies of pages to reduce recurring PHP processing. - Browser caching
Configures client-side cache to reuse files already loaded by the visitor. - Feed caching
Stores feed responses to decrease repeated queries to WordPress. - CDN filters
Rewrites static file URLs to serve assets via CDN. - HTML compression
Removes spaces and redundant markup from HTML before delivery.
Benefits of Comet Cache Pro
- Less server load
Cached pages reduce database calls on repeated visits. - Faster browsing
Files reused by the browser decrease waiting time during visits. - Better response during traffic spikes
Caching helps the site handle concentrated traffic. - Clear technical control
Options are centralized in the plugin dashboard.
Who is Comet Cache Pro For?
- Those who publish many posts, pages, or feeds and need to reduce repeated processing.
- Anyone maintaining business WordPress sites who wants to improve response times.
- Those using a CDN to serve images, scripts, and styles with lower latency.
How to Download Comet Cache Pro
Comet Cache Pro is available for download here at Ultrapack. After downloading the .zip file, install it under Plugins > Add New > Upload Plugin, select the package, and activate it. After activation, configure the options in the plugin menu within the WordPress dashboard.
Comet Cache Pro fits into WordPress projects that need configurable caching without turning site maintenance into a heavy technical task. With features for pages, browser, feeds, CDN, and HTML, it concentrates performance adjustments into a predictable workflow, useful for those who want to reduce perceived slowness and keep the dashboard more manageable.
Frequently asked questions
Is Comet Cache Pro GPL-licensed?
Yes. Comet Cache Pro is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.
Can I use Comet Cache Pro on multiple sites?
Yes. You can use Comet Cache Pro on multiple sites. The number of sites connected to Ultrapack Auto Updater is limited by your plan.
How much does Comet Cache Pro cost at Ultrapack?
Comet Cache Pro costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).
Does Comet Cache Pro include updates?
Yes. The current version of Comet Cache Pro is 170220, published at Ultrapack on Nov 17, 2018. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).
Is Comet Cache Pro scanned before publication?
Yes. Every version of Comet Cache Pro goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.
What are the requirements for the plugin Comet Cache Pro?
Requires WordPress 4.2 or higher. Tested up to WordPress 4.8.
What changed in this version
Version 170220
- New Feature: Comet Cache can now be configured to automatically clear the cache for date-based archive views whenever any single post is cleared due to changes in content, title, etc. See: Dashboard → Comet Cache → Plugin Options → Automatic Cache Clearing → Auto-Clear "Date-Based Archives" Too?. See also: [Issue #724]
- New Pro Feature: Apache Optimizations now include a new option that allows site owners to enforce an exact host name for all requests. See: Dashboard → Comet Cache Pro → Plugin Options → Apache Optimizations → Enforce an Exact Host Name?. See also: [Issue #101]
- Bug Fix: Apache detection sometimes inaccurate. So instead of using default WP core globals for server detection, Comet Cache now uses it's own set of Apache/Nginx/IIS detection functions. And, this release enhances our Apache and Nginx detection routines; making them smart enough to catch additional edge cases; i.e., to further reduce the likelihood of there being a false-positive. See [Issue #748]
- Bug Fix: Some XML-RPC and REST API requests were being cached inadvertently. See [Issue #855]
- Bug Fix: Broken textarea field due to `white-space:nowrap` in Firefox. See [Issue #866]
- Bug Fix: This release resolves empty directories being left in the cache folder, in some scenarios. See [Thread #866]
- Bug Fix (Pro): Some REST requests were being redirected incorrectly whenever Apache Optimizations were enabled. See [Issue #855]
- Compatibility Bug Fix: Some Jetpack API calls were being cached inadvertently. See [Issue #855]
- Enhancement: Notes in HTML source now indicate fully functional on first load for improved clarity. See [Issue #860]
- Enhancement: Enhancing security by removing `basename(__FILE__)` from direct access notices.
Version 161227
- Note: This is a Comet Cache Pro maintenance release.
- Bug Fix (Pro): Resolves an issue with the previous Pro maintenance release (v161226) where `admin-bar.min.css` was missing, which caused issues with the Admin Bar buttons. This was due to a glitch in our build system. See [Issue #864]
Version 161226
- Note: This is a Comet Cache Pro maintenance release.
- Bug Fix (Pro): Resolves error `Unable to determine UA info directory location` when upgrading to latest release. See [Issue #862]
- Bug Fix (Pro): Enhancing compatibility with InfiniteWP, ManageWP, and other remote management tools for WordPress. See [Issue #862]
- Bug Fix (Pro): Incorrect time calculations whenever load average checks are enabled in Comet Cache configuration options. See [Issue #853]
- Cleanup: Removed an old API call that checked for a newer lite version. No longer necessary.
Version 161221
- Bug Fix: Improving PHP OPcache detection. Now considering the INI option `opcache.restrict_api`. Comet Cache is now smart enough to avoid generating the PHP Warning: _PHP Warning: Zend OPcache API is restricted by "restrict_api" configuration directive_. See [Issue #733]
- New Feature (Pro): Mobile Mode. This release adds a new feature that is designed to improve compatibility with Adaptive themes for mobile devices. To learn more, please see: Dashboard → Comet Cache Pro → Plugin Options → Mobile Mode. See also: [Issue #471]
- Enhancement: Auto-Clearing Author Page Cache. This release makes Comet Cache smart enough to detect when a user is deleted (or removed from a child blog in a Network), at which time the Author page for that user will be cleared from the cache so it can be regenerated automatically. See [Issue #304]
- Enhancement: Multibyte Compatibility. This release improves support for WordPress Permalinks that contain UTF-8 symbols (or emojis) in them. More specifically, this release adds the `/u` flag to all `preg_*` calls in cache clearing routines that generate cache paths from Watered-Down Regex patterns entered by a site owner. See: [Issue #611]
- Enhancement: Widget Change Detection. Comet Cache can now detect when Appearance → Widgets are added/edited/removed, and Comet Cache will automatically clear the cache so that your site remains up-to-date. See [Issue #411]
- Enhancement (Pro): Static CDN Filters and `srcset`. This release enhances Static CDN Filters in Comet Cache Pro. Static CDN Filters are now smart enough to filter all image sources included in an `srcset=""` attribute that is generated by WordPress. See [Issue #660]
- Enhancement (Pro): Automatic Background Updates. It is now possible to enable automatic background updates that occur quietly in the background whenever new features, bug fixes, or security issues are addressed by our developers. See: Dashboard → Comet Cache Pro → Config. Options → Update Credentials. See also: [Issue #827]
- Enhancement (Pro): HTML Compressor + Accelerated Mobile Pages (AMP). Updated to the latest available release of the HTML Compressor (v161208) with improved support for [Accelerated Mobile Pages]
- Enhancement (Pro): HTML Compressor / AMP Compatibility. Improved compatibility with [Accelerated Mobile Pages]( There is a new HTML Compressor option that is enabled by default and it makes Comet Cache smart enough to auto-detect and selectively disable portions of the HTML Compressor that are incompatible with the AMP spec; i.e., routines that are not necessary when serving APMd pages. In short, if the URI being compressed ends with `/amp/`, or the document contains a top-level ` ` tag (` ` is accepted as well), then features which are incompatible with [Accelerated Mobile Pages]
- Compatibility: Avoid deprecated `wp_get_sites` and use `get_sites` instead. See [Issue #848]
- Documentation: Added Watered-Down Regex documentation notes to the inline documentation (in the software) about the use of `^` and `$` in some places where these special characters are not fully supported. Also adding the same notes to the [Watered-Down Regex KB Article]
Version 161119
- Bug Fix: Avoid browser autocomplete in configuration fields by adding `autocomplete="off"` to all form tags in Comet Cache menu pages. See [Issue #832]
- Bug Fix: Fixed a broken link to the [Static CDN Filters tutorial for MaxCDN integration]
- Bug Fix: Multisite installations inside a subdirectory were broken by Apache Optimizations via `.htaccess` in some scenarios. Fixed in this release. See [Issue #798]
- Bug Fix: Don't enqueue `Chart.js` unnecessarily in lite version of the software. See [Issue #830]
- Bug Fix: Enhancing WooCommerce integration by listening to the `woocommerce_product_set_stock_status` hook in addition to the `woocommerce_product_set_stock` hook. See [Issue #674]
- Bug Fix (Pro): Automatically dismiss any persistent update notifications whenever a new version of the software is recompiled; i.e., don't continue to show an upgrade notice whenever the software has just been updated by a site owner. See [Issue #806]
- Enhancement: This version enhances the HTML comments left in the source code (HTML Debug Notes). When debug notes are enabled (i.e., HTML comments) they are now broken down into key/value pairs and tabulated for a cleaner display and easier debugging. See [Issue #790]
- Performance Enhancement: For sites configured to allow query string variables into the cache, those variables are now sorted by key name internally to avoid duplicate cache files; i.e., whenever the order of query string variables changes from request to another, but with the same exact values. In short, Comet Cache now knows how to serve the same underlying cache file; i.e., from a previous request that may have had the same query string, just in a slightly different order. See [Issue #639]
- UI Enhancement: The Comet Cache UI is now fully Responsive with an improved UI on laptop and mobile devices. Props @renzms. See [Issue #699]
- UI Enhancement: This release improves the toggle link that allows you to see additional details whenever Comet Cache automatically clears more than one facet of the cache. See [Issue #837]
- UI Enhancement (Pro): Following improvements to the update API in a previous release of Comet Cache that made it possible to update both the lite and pro versions of the software through normal WordPress update mechanisms, this release removes some clutter from the menu pages for Comet Cache. In short, now that we have a tighter integration with WordPress core, it's no longer necessary for Comet Cache to display update notifications in a custom way. See [Issue #829]
- New Pro Feature: In the pro version it is now possible to define a list of GET request variable names that should be ignored entirely by Comet Cache. See: Dashboard → Comet Cache → Plugin Options → GET Requests → List of GET Variable Names to Ignore. As an example, this new feature makes it possible for site owners to pass query string variables associated with Google Analytics (i.e., `utm_*` variable names) without incurring a cache performance hit. See [Issue #639]
- Nonce Support (Pro): In the pro version, when logged-in user caching is enabled, Comet Cache is now capable of intelligently caching pages that contain Nonce values
- RevSlider Compat.: This release includes a built-in exclusion rule for the HTML Compressor to allow for improved compatibility with the popular RevSlider plugin for WordPress. The new built-in exclusion rule looks for and automatically bypasses an important style tag that must be preserved for the RevSlider plugin to work in all scenarios; i.e., `
- i18n Compat. (Lite): This release makes all pro preview labels translatable by moving the labels that were previously defined in CSS only into HTML attribute values. See [Issue #808]
Release notes published by the developer.
How to install
Automatic updates: this item is updated by the Ultrapack Auto Updater. With it installed, the new version shows up in your dashboard like any other WordPress update (how to set it up).
- Download the file
comet-cache-pro.zip. - In the WordPress dashboard, go to Plugins > Add New > Upload Plugin.
- Select the file
comet-cache-pro.zipand click Install Now. - Click Activate.
Requirements: Requires WordPress 4.2 or higher. Tested up to WordPress 4.8.
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