This guide outlines key CDN caching strategies to optimize website performance. CDN caching reduces latency by storing content on edge servers near users, offering faster load times, lower bandwidth costs, and better SEO. Key strategies include using Cache-Control headers to set caching rules, optimizing TTL for static and dynamic content, and employing Edge-Side Includes for partial page caching. Cache invalidation techniques like manual purging, versioned URLs, and cache tags ensure updated content delivery. Advanced methods such as tiered caching, adaptive caching, and custom cache keys enhance efficiency. Pitfalls to avoid include over-caching dynamic content, low cache hit ratios, and cache stampedes. Proper implementation improves scalability and user experience.