What problem does it solve? Running time-limited sales reliably requires coordinating countdown timers, per-sale quantity limits, automatic price restoration, and bot protection during traffic spikes — mistakes cause overselling, stuck sale prices, or bots exhausting stock before real customers can buy. ## Core Features & Use Cases - Platform-Specific Setup: Step-by-step configuration for Shopify (Launchpad, Hextom), WooCommerce (YITH, native scheduling), BigCommerce promotions, and custom headless builds. - High-Concurrency Stock Reservation: Redis atomic increment patterns with overshoot rollback to prevent overselling during traffic spikes, plus SSE-based countdown timers with server-authoritative time. - Virtual Waiting Rooms: Cloudflare Waiting Room and Redis Sorted Set queue patterns with admission tokens and bot protection for high-demand product drops. - Use Case: A sneaker retailer launching a 500-unit limited drop uses this Skill to schedule the sale, queue thousands of visitors fairly, cap purchases atomically, and restore prices automatically at the end time. ## Quick Start Set up a 24-hour flash sale on my Shopify store with a countdown timer, a 100-unit quantity cap, and automatic price restoration when it ends.
