MilliCache WP Registry grade A. No security issues foundWP RegistryNo security issues foundOpen the reportA #1 in Performance & Caching

High-performance full-page caching for WordPress using Redis, Valkey, or any compatible backend.

MilliCache stores complete HTML pages in memory and serves them in milliseconds — without loading WordPress. Combined with intelligent cache flags and flexible rules, it's designed for scaling sites that need both speed and control.

Key Features

• Lightning Fast — In-memory caching with blazing fast response times
• Cache Flags — Tag pages for precise, targeted cache invalidation
• Flexible Rules — Control caching behavior with condition-based rules
• Multisite Native — Per-site isolation, network-wide management
• Built to Scale — Multiple web servers can share a single Redis instance
• WP-CLI Integration — Full command-line cache management
• Multiple Backends — Redis, Valkey, Dragonfly, or any Redis-compatible server

Learn more on millipress.com, where you also find the full documentation.

Quick Start

1. Install via ZIP download or Composer:

   composer require millipress/millicache

2. Activate the plugin in WordPress admin

3. Enable caching in wp-config.php:

   define( 'WP_CACHE', true );
   
   // Optional: Configure Redis connection
   define( 'MC_STORAGE_HOST', '127.0.0.1' );
   define( 'MC_STORAGE_PORT', 6379 );

4. Verify in Settings UI, Browser Developer Tools, or with WP-CLI:

   wp millicache test
   wp millicache status

Documentation

Full documentation is available on millipress.com/docs/millicache:

MilliCache Pro

MilliCache Pro extends MilliCache with premium modules: a cache entries browser, a visual rules builder, block editor cache intelligence, cache preloading, detailed metrics, edge caching (bunny.net, Cloudflare), an asset CDN, and a persistent object cache. See the Pro documentation for details.

Requirements

• PHP 7.4+ (8.x recommended)
• WordPress 6.6+
• A Redis-compatible server: Redis, Valkey, Dragonfly, or any other RESP-compatible backend

Community

The Discord server and GitHub Discussions are places to swap setups, trade tips, and share your ideas for where MilliCache should head next. We're listening.

For bug reports, open a GitHub issue. MilliCache Pro customers also get direct support by email and a private Discord channel.

Testing

MilliCache uses PHPUnit, PHPStan, and Playwright for testing. To run tests locally:

# Start test environment (requires Docker + Node.js)
npm install
npm run env:start

# Run e2e tests
npm run env:e2e

# Stop environment
npm run env:stop

Test WordPress available at http://localhost:8888 (login: admin / password)

Useful Commands

npm run env:cli wp millicache stats    # Run WP-CLI commands
npm run env:redis-cli                  # Open Redis CLI
npm run env:reset                      # Reset environment

Credits

MilliCache was initially inspired by:

• Page Cache Red by Pressjitsu
• Cachify by PluginKollektive
• Cache Enabler by KeyCDN

License

GPLv2 or later