WooCommerce automatically disables a webhook when delivery attempts continuously fail and reach the consecutive failure threshold (default is 5 consecutive failures). This built-in safety circuit prevents failing endpoints from exhausting PHP process workers, filling wp_options action scheduler logs, and causing database bloat. When the receiving server responds with HTTP errors (4xx or 5xx), times out … Read more
WordPress REST API 401 Unauthorized errors during Application Password synchronization occur when HTTP Basic Authentication headers are stripped by the web server (Apache/Nginx) before reaching PHP, or when security plugins block REST API authorization headers. When synchronizing external systems via Application Passwords, the Authorization: Basic <credentials> header must be parsed by wp_authenticate_application_password(). If the header … Read more
WordPress wp-cron.php high CPU usage occurs because default WP-Cron execution is triggered on every HTTP page request, causing heavy database queries and PHP worker starvation under high traffic. When multiple concurrent visitors land on a site, multiple PHP-FPM processes spawn simultaneously to execute the same scheduled tasks, leading to resource locks and CPU spikes. Offloading … Read more
The Missing field ‘hasCourseInstance’ warning occurs when Rank Math outputs a Course schema generator on a custom post type (CPT) without populated course instance properties, such as execution mode, location, or start dates. According to Google’s Structured Data guidelines, a Course entity requires a CourseInstance (or hasCourseInstance array) detailing when and where the course takes … Read more
WooCommerce session loss during checkout submission with Redis active occurs when the PHP session or WooCommerce session handler (WC_Session_Handler) gets flushed or invalidated during the transient object lifecycle. When Redis cache key eviction policies are improperly configured (such as volatile-lru or allkeys-lru), high-traffic memory pressure forces Redis to drop active wc_session_ keys. Additionally, race conditions … Read more
