VaryCache

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