Pantheon Advanced Page Cache

What is Pantheon Advanced Page Cache?

Pantheon Advanced Page Cache is a specialized caching plugin for sites hosted on the Pantheon platform. It uses surrogate key technology to tag every page response with identifiers for the data it contains. When content changes, the plugin sends precise purge requests to the edge cache, removing only the affected URLs. This approach delivers a significantly more accurate cache purge than traditional methods.

Developed by Pantheon Systems, this plugin has been available for 10 years. It currently holds 10K+ active installs with a 5.0/5 rating from 1 reviews. All ratings are five-star, with zero one-star reviews. The latest version is 2.1.2, last updated on Dec 16, 2025. For sites wanting fine-grained control over their edge cache, this tool is the golden ticket.

Key Features of Pantheon Advanced Page Cache

• Surrogate Key Tagging: Each response receives a Surrogate-Key header containing identifiers for posts, users, and taxonomies used in the page.
• Automatic Purge on Content Update: When a post is updated, the plugin clears the cache for that post's URL, the homepage, index views, and REST API endpoints simultaneously.
• Author Change Handling: If an author changes their name, the plugin purges the author's archive page and every post they have authored.
• REST API Support: Surrogate keys work with WordPress REST API responses, enabling automatic cache clearing for API endpoints like /wp-json/wp/v2/posts.
• Custom Key Filter: Developers can add custom surrogate keys using the pantheon_wp_main_query_surrogate_keys filter for sidebar widgets or custom queries.
• Optimized Key Limits: The plugin limits surrogate keys per response based on typical WordPress site expectations, preventing header bloat.
• Edge Cache Efficiency: By tagging responses with metadata, the plugin enables a higher cache hit rate and more flexible purging behavior.

Who Should Use Pantheon Advanced Page Cache?

This plugin is designed for WordPress site owners and developers who host on Pantheon. It requires a working knowledge of WordPress caching concepts, but no advanced coding skills for basic use. The installation process is straightforward—activate and go. Beginners benefit from the automatic cache clearing when updating WordPress content, eliminating manual purges.

With 10K+ active installs, the plugin suits a wide range of sites. Small business blogs use it to ensure the homepage clears when they publish a new post. Large media sites rely on it for precise author archive purges. Agencies managing multiple client sites appreciate the automatic cache on content update workflows. For anyone asking "what is the best cache plugin for Pantheon WordPress," this is the native solution from the platform provider.

Installation & Setup

Installing Pantheon Advanced Page Cache takes less than a minute. You can install it from the WordPress dashboard or use WP-CLI with the command wp plugin install pantheon-advanced-page-cache --activate. The plugin activates with zero configuration required—surrogate keys and purge triggers work immediately. For developers, the custom keys filter allows adding tags for sidebar content or custom post types.

Support & Community

The support data shows 0 open threads and 0 resolved threads over the past 2 months, resulting in a 0% resolution rate. This likely reflects the plugin's stability rather than neglect. With a 5.0/5 score from 1 ratings—100% five-star—users report that the plugin works reliably without needing support. The plugin has been maintained for 10 years, with the latest update on Dec 16, 2025. For questions about how to automatically clear cache when updating WordPress content, the plugin's documentation on WordPress.org covers surrogate keys and purge behavior thoroughly.