nolimit-cache-dist/docs/README.md

Nolimit Cache

A page cache and front-end optimiser for WordPress and WooCommerce. It answers a visitor's request from a file on disk before WordPress boots, and it knows enough about WooCommerce not to do that to a customer holding a basket.

It is one of a family of Nolimit plugins that share an admin menu and a dashboard. Hooks and integration lists what it offers to the others, and to your own code.

What it does

• Page cache. An advanced-cache.php drop-in serves a stored copy of a page. This runs before the theme, the plugins and most of WordPress, which is where the speed comes from and also why it has to be careful.
• Object cache. An optional object-cache.php drop-in backed by Redis.
• Front-end optimisation. Defers scripts, drops WordPress's emoji and oEmbed machinery, and can rewrite asset URLs to a CDN.
• Images. Writes WebP (and optionally AVIF) copies beside JPEG and PNG files and offers them with <picture>, so the page cache stays correct for every browser. Originals are never touched.
• Preloading. Walks a queue of URLs on a five-minute cron so the first real visitor does not pay for the first render.
• Purging. Clears the right pages when a post, a term, a comment or a WooCommerce product or order changes.
• Health checks and an assistant. A set of signals about whether the cache is actually working, and an ask-box on the admin screens.

What it deliberately does not do

• No minification or concatenation. Those break themes in ways that are expensive to debug and are better handled by a build step.
• No CSS "critical path" extraction. Same reason.
• No telemetry of any kind. Nothing is reported anywhere. The only outbound requests are the update check against gitea.nolimit.dk and an AI provider if, and only if, one has been configured with a key.
• No account, no licence check, no phone-home.

Where things are

Admin screen	Nolimit → Cache
Settings	one option, nlcac_settings
Engine config	wp-content/cache/nolimit/config.php, written from the settings
Drop-ins	wp-content/advanced-cache.php, wp-content/object-cache.php
REST namespace	nlcac/v1
Requires	WordPress 6.0, PHP 7.4. WooCommerce optional
Version	0.3.2

Reading order

1. Installing it, and telling whether it works
2. Hooks and integration, for developers