E-commerce Caching

Overview

Implement multi-layer caching for e-commerce applications covering CDN edge caching, application-level caching (Redis), and full-page caching with cart-aware invalidation. This skill addresses the unique challenges of caching commerce pages — personalized content (cart count, logged-in state), frequently changing inventory and prices, and the need for instant cache purging when products or prices change.

When to Use This Skill

• When product and collection pages are slow due to database queries and API calls
• When implementing a CDN or edge caching strategy for a storefront
• When adding Redis caching for product data, inventory, and session management
• When building cache invalidation logic that reacts to product, price, or inventory changes
• When optimizing time-to-first-byte (TTFB) for high-traffic sale events

Core Instructions

Step 1: Determine your platform and what you can control