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WordPress Edge Caching with Cloudflare Workers and Cache API

WordPress Edge Caching with Cloudflare Workers and Cache API

Cloudflare Workers can intercept every request before it reaches your WordPress origin, check a custom cache key in the Cloudflare Cache API, and serve a cached HTML response from the edge — reducing origin load to near zero for anonymous traffic. Unlike page-caching plugins that still hit PHP, Workers serve from CDN edge nodes globally…
WordPress Database Query Optimisation: Reducing wp_postmeta Queries

WordPress Database Query Optimisation: Reducing wp_postmeta Queries

The wp_postmeta table is the single biggest source of slow queries on most WordPress sites. Every call to get_post_meta() without the $single parameter or with a hot-path meta key can turn into a full table scan. The fixes — meta caching, update_post_meta_cache, composite queries, and the EAV-to-normalised migration pattern — together can cut database time…
WordPress REST API Performance: Sparse Fieldsets and Caching Strategies

WordPress REST API Performance: Sparse Fieldsets and Caching Strategies

The WordPress REST API returns full post objects by default — including 40+ fields, embedded author objects, and taxonomy arrays — even when the client only needs the title and permalink. The _fields parameter enables sparse fieldsets to reduce payload size by 80–90%, and combining sparse fieldsets with HTTP caching headers and a Redis-backed response…
WordPress Image Optimisation Pipeline: WebP, AVIF, and Responsive Images

WordPress Image Optimisation Pipeline: WebP, AVIF, and Responsive Images

WordPress 5.8+ generates WebP versions of uploaded images automatically (when the GD or Imagick extension supports it), and WordPress 6.5 added experimental AVIF support. A complete image optimisation pipeline combines format generation, quality tuning, responsive srcset attribute output, and a <picture> element fallback for maximum browser compatibility and minimum file size.
WordPress Critical CSS Generation and Inline Delivery with PHP

WordPress Critical CSS Generation and Inline Delivery with PHP

Render-blocking stylesheets are one of the most common LCP and FCP bottlenecks on WordPress sites. The solution — extracting the CSS required to render above-the-fold content (“critical CSS”) and inlining it in <head> while loading the full stylesheet asynchronously — eliminates the render-blocking request entirely. The challenge is automating extraction and keeping the critical CSS…
WordPress Object Cache Groups and Cache Invalidation Strategies

WordPress Object Cache Groups and Cache Invalidation Strategies

WordPress’s object cache API supports cache groups — named namespaces that let you flush a logical set of entries atomically without clearing the entire cache. Combined with a persistent backend (Redis or Memcached), groups are the right tool for caching expensive queries while ensuring stale data is never served after content changes.