WooCommerce Performance & CPU Spike Fix (Server + Action Scheduler) Project Summary We run a WooCommerce store on a managed VPS (10 cores) processing around 2,000 orders per month. At times the server CPU spikes to 100%, taking the site offline. Normal traffic is low and stable — this is not a traffic issue. We need an experienced WooCommerce performance / server specialist to diagnose and permanently fix the issue. Current Setup WooCommerce (production site) Managed VPS (Linux) Redis Object Cache enabled Plugins: Mailchimp for WooCommerce WP-Lister Pro (eBay integration) External API JSON communication SSH, WP-CLI, and database access available Known / Suspected Causes WooCommerce Action Scheduler backlog or concurrency issues Cron job misconfiguration (WP-Cron vs system cron) Background jobs consuming all CPU cores simultaneously Scope of Work You will be expected to: Audit WooCommerce Action Scheduler Inspect wp_actionscheduler_actions table Identify backlog, stuck jobs, and job sources Control batch size and concurrency to prevent CPU saturation Fix Cron Configuration Verify WP-Cron vs system cron setup Ensure no duplicate or overlapping cron execution Implement best-practice cron configuration for WooCommerce Optimise Plugin Background Jobs Reduce Mailchimp job retries / sync frequency Tame WP-Lister Pro eBay sync jobs Prevent API failures from causing job floods Server-Level Review PHP-FPM configuration under background load MySQL / MariaDB behaviour during job execution Confirm Redis Object Cache is effective Stability & Handover Ensure background jobs no longer cause 100% CPU spikes Provide a clear summary of what was fixed and why Required Experience (Important) You must have real experience with: WooCommerce Action Scheduler WooCommerce cron jobs & background processing VPS / Linux server administration Redis Object Cache WP-CLI High-load WooCommerce environments This is not suitable for: Theme developers Page builder experts Designers SEO or “speed score” optimisation gigs Deliverables WooCommerce site stable during background job execution No monthly CPU spikes caused by scheduled jobs Action Scheduler under control Brief written explanation of changes made Screening Question (Required) Please answer this in your proposal: How do you limit WooCommerce Action Scheduler concurrency and prevent cron-related CPU spikes?