VaryCache

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Advanced variant-based caching system for A/B testing, geo-targeting, and query parameter variations. Serve different cached versions of pages.

Author:gkap186 (profile at wordpress.org)
WordPress version required:5.0
WordPress version tested:6.9
Plugin version:1.2.3
Added to WordPress repository:09-01-2026
Last updated:10-01-2026
Rating, %:0
Rated by:0
Plugin URI:
Total downloads:212
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VaryCache is a powerful WordPress caching plugin that combines page caching with content personalization. Serve different cached versions of your pages based on A/B tests, visitor location, or URL parameters — all while maintaining excellent performance.

Core Caching

  • Page Cache – File-based caching for fast page delivery without database overhead
  • REST API Cache – Cache REST API responses to reduce server load
  • Cache Preload – Automatic cache warming from sitemap
  • Browser Cache Headers – Cache-Control, Expires, Last-Modified, Vary headers

Content Personalization

  • A/B Testing – Create multiple tests with weighted variants (50/50, 70/30, etc.)
  • Geo Targeting – Show different content based on visitor’s country
  • Query Parameters – Cache variations based on UTM tags and other URL parameters

Speed Optimizations

  • HTML Minification – Remove whitespace to reduce page size
  • DNS Prefetch – Pre-resolve external domains for faster loading
  • Preload Resources – Preload fonts, CSS, and hero images for better LCP
  • Link Prefetch – Preload pages on hover for instant navigation
  • Disable Emoji – Remove WordPress emoji scripts (~15KB savings)
  • Remove Query Strings – Better CDN caching for static resources
  • Image Dimensions – Auto-add missing width/height to prevent CLS
  • Gzip Compression – Compress HTML output to reduce page size by ~70%

Developer Features

  • Shortcodes – Easy content switching in posts and pages
  • PHP Functions – Helper functions for theme developers
  • Debug Panel – Visual debugging panel on frontend
  • CDN Compatible – Works with CloudFront, Cloudflare, and other CDNs
  • Translation Ready – Includes Russian translation

Shortcodes

[varycache_ab v="A"]Content for variant A[/varycache_ab]
[varycache_ab v="B"]Content for variant B[/varycache_ab]
[varycache_ab test="pricing" v="X"]Content for specific test[/varycache_ab]
[varycache_geo country="US"]Content for US visitors[/varycache_geo]

PHP Functions

// A/B Testing
if ( varycache_is_variant( 'A' ) ) {
    // Show variant A content
}
$variant = varycache_get_variant(); // Returns 'A', 'B', etc.

// Geo Targeting
if ( varycache_is_geo( 'US' ) ) {
    // Show US-specific content
}
$country = varycache_get_geo(); // Returns 'US', 'RU', etc.

Page Patterns

Flexible page matching with wildcards and regex:

  • / – Homepage only
  • /pricing – Exact page match
  • /blog/* – Single level wildcard
  • /shop/** – Any depth wildcard
  • ~^/post/\d+$ – Regular expression (prefix with ~)

Requirements

  • WordPress 5.0 or higher
  • PHP 7.4 or higher
  • Write access to wp-content directory
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