WP 404 Caching #8 in Performance & Caching

WP 404 Caching A WordPress plugin to provide full page caching for 404 pages, improving performance and reducing server load. Requirements - SSL enabled on the website. - An external object cache setup (e.g., Redis, Memcached). - Requires at least: 6.3 - Tested up to: 6.4 - Requires PHP: 8.1 - License: GPL v2 or later Description WP 404 Caching is a lightweight plugin that efficiently serves cached 404 pages to non-logged-in users. It reduces server load by storing the cached 404 page in an external object cache and returning it early in the request process. The plugin uses a dual regular/stale caching strategy to minimize cache misses. It maintains a regular cache with a 1-hour expiration and a stale cache with a 1-day expiration. If the regular cache is empty, the stale cache is served. Features - Full page caching for 404 pages - Utilizes external object cache for storing cached 404 pages - Dual regular/stale caching strategy to minimize cache misses - Automatically generates and caches 404 page via a "guaranteed 404 URI" - Triggers cache generation hourly via a cron job and immediately on cache misses - Sends X-WP-404-Cache header to indicate cache HIT/MISS status - Ens