cdn-caching-specialist

What problem does it solve?

This Skill helps diagnose and resolve slow static asset delivery, stale or misconfigured CDN caches, high bandwidth usage from unoptimized assets, and cache invalidation failures that cause users to receive outdated content.

Core Features & Use Cases

• Verify CDN health and configuration: check DNS, SSL, cache headers, and CDN dashboard signals to confirm assets are being served from the edge.
• Cache header and TTL strategy: define Cache-Control rules by file type, set long TTLs for hashed assets, and short revalidation for HTML/APIs.
• Versioning and invalidation: implement content hashing, purge via CDN APIs or invalidations, and establish safe purge policies for deployments.
• Asset optimization: enable compression, modern image formats, lazy loading, and delivery optimizations to reduce bandwidth and improve cache hit ratios.
• Monitoring and remediation: measure cache hit ratio, regional response times, bandwidth saved, and set alerts for cache misses or elevated error rates.

Quick Start

Configure CDN caching for yourdomain.com to serve hashed static assets with a one-year immutable TTL, bypass caching for /api/*, and set up automated cache purges on deploy.