20 articles
Every article tagged Performance, newest first. The Performance category lists most of these articles too. Search all articles
Performance8 min read
WordPress CDN caching: cache full pages safely at the edge
WordPress CDN caching is safe when the CDN stores only anonymous, public HTML and bypasses requests that can vary by user, session, cart, preview, or admin state. Cache static assets broadly, cache full pages selectively, purge changed URLs, and verify the response headers before trusting the policy in production.
Performance7 min read
WordPress LCP image optimization: make the largest image load first
A slow WordPress LCP image usually needs three things: early discovery, high fetch priority, and a file sized for the space it occupies. Find the actual LCP element first, then remove accidental lazy loading, fix responsive image markup, preload late-discovered backgrounds, and retest.
Performance7 min read
WordPress OPcache settings: size it, check it and keep it warm
WordPress OPcache settings should be sized from the cache your PHP-FPM workers are using, not from a copied tuning block. Check the live OPcache status, count the PHP files in the active release, then make deployment resets and warm-up part of the release process.
Performance8 min read
WordPress PHP workers: size them, spot saturation and use fewer
WordPress PHP workers are PHP-FPM child processes that execute uncached PHP requests, and pm.max_children caps how many a pool can serve at once. Size the pool from measured worker memory and available RAM, then confirm saturation with the PHP-FPM status page and logs before adding workers.
Performance8 min read
WordPress REST API performance: find slow endpoints and make them fast
WordPress REST API performance improves when you measure the request first, reduce the work each endpoint does, and cache only responses that are safe to share. Start with time to first byte, then trace database queries, remote HTTP calls, response building, authentication and cache behavior before changing code.
Development7 min read
WordPress Script Modules: load ES modules the WordPress way
WordPress Script Modules are the core API for registering and loading front-end ES modules with named dependencies. Since WordPress 6.5, you can let WordPress build the import map, preload static module dependencies, and print the module entry point in the right order.
Performance8 min read
How to find and fix slow WordPress database queries
WordPress slow database queries are usually found by measuring the actual SQL, its execution time, and how often it runs before changing indexes or code.
Performance7 min read
WordPress speculative loading: faster navigation without breaking a store
WordPress speculative loading can make page-to-page moves feel faster by asking the browser to fetch likely destinations before a visitor clicks. On a WooCommerce store, keep dynamic and state-changing URLs out of those rules, then verify what Chrome loads before making the behavior more eager.
Performance7 min read
How to reduce WordPress TTFB: a diagnostic guide
To reduce WordPress TTFB, measure the same request at each layer instead of tuning WordPress blindly. Separate DNS, connection and TLS time from time to first byte, compare CDN hits with origin requests, then profile PHP, database work and external calls on the slow path.