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A fix-guide cover headed "Nonces expire at noon and midnight", with the xSpeed Cache logo, chips for WordPress, WooCommerce and Contact Form 7, and a broken form window turning into a fixed one.
CachingTroubleshooting

A Form Stopped Submitting After You Enabled Caching, and the Nonce Is Usually Innocent

A WordPress nonce expires on a shared clock at midnight and noon UTC, not on your page's schedule. Three causes break a cached form, and the famous one is rarest.

Oct 8, 2026 6 min read
Fast for you, slow abroad, xSpeed cover
CDNPerformance

Fast for You, Slow Abroad: It Depends Who Answers Your First Byte

Your page is quick from your desk and slow from another continent. Find out whether an edge near your visitor or your own origin answered, then fix that half.

Oct 2, 2026 7 min read
Delay JavaScript broke the menu, with the WordPress logo, xSpeed cover
PerformanceTroubleshooting

Delay JavaScript Broke the Menu: The Script Ran After the Event It Was Waiting For

A delayed script is not a slower script. It runs in a document that already fired the event it was written to wait for. Three loads tell you which cause you have.

Sep 28, 2026 7 min read
Fast signed out, slow signed in, with the WordPress logo, xSpeed cover
CachingTroubleshooting

Fast Signed Out, Slow Signed In: Every Request You Make Runs the Whole of WordPress

WordPress recommends a persistent object cache once 500 options autoload. A fresh install starts at 95. Why signing in leaves the page cache behind.

Sep 26, 2026 7 min read
Clear every WordPress cache, with the WordPress logo, xSpeed cover
CachingTutorial

Clearing Every WordPress Cache in 2026: Your Database Is Holding One of Them

WordPress keeps a cache in wp_options that no purge button empties, and wp cache flush skips it entirely without a drop-in. Six stores, cleared in the right order.

Sep 26, 2026 10 min read
All WebP, still heavy, xSpeed cover
PerformanceCore Web Vitals

Every Image Is WebP and the Page Weight Did Not Move: Format Saved 38%, Pixels Saved 93%

Twelve photographs, measured on 25 September 2026. Converting to WebP saved a median 38.4%. Resizing the same files saved 92.8%. Why dimensions beat format.

Sep 25, 2026 7 min read
The preload that never finishes, with the WordPress logo, xSpeed cover
CachingTroubleshooting

A Preload That Never Ends and a Preload That Never Started Look the Same

A preloader that never finishes is either walking a lap longer than the cache lifetime, or it never queued a list at all. Two commands tell the two apart.

Sep 24, 2026 7 min read
Cache plugins writing the same file, with the WordPress logo, xSpeed cover
CachingTroubleshooting

Ten of Fourteen Cache Plugins Write the Same File: The WordPress Conflict Nobody Documents in 2026

Ten of fourteen free WordPress caching plugins write the same wp-content/advanced-cache.php. We read the shipped source and published what each one does.

Sep 24, 2026 18 min read
Fast first byte, slow page, xSpeed cover
PerformanceCore Web Vitals

The First Byte Is Fast and the Page Still Is Not: LCP Has Four Parts and You Fixed One

TTFB is about 40% of a well-tuned LCP. If the server is fast and the page is not, the wait is in discovery, render-blocking or bytes. Find which one.

Sep 23, 2026 7 min read
The hit rate dropped overnight, xSpeed cover
CachingTroubleshooting

The Hit Rate Dropped Overnight and the Cache Never Changed

A hit rate is hits over counted requests, and an update can change what either word means. The shape of the drop tells you whether the cache moved at all.

Sep 22, 2026 7 min read
Layout breaks after minification, with the WordPress logo, xSpeed cover
CachingTroubleshooting

The Theme Looks Unstyled and Minify Is the Only Thing You Changed

Minification rarely corrupts a file. It changes which files exist and when they apply. Four bisect passes find the exact switch that broke your layout.

Sep 21, 2026 7 min read
Visitors seeing someone else's name, with the WordPress logo, xSpeed cover
CachingTroubleshooting

A Logged-Out Visitor Is Seeing Someone Else's Name

A cached page is serving one person's session to everyone. Two commands tell you which layer holds it, and seven documented routes explain how it got there.

Sep 10, 2026 7 min read

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