CDN Origin Shielding in 2026: Multi-Tier Cache, Cache Hit Ratio, and TTFB
How CDN origin shielding raises cache hit ratio and cuts origin TTFB. Setup for Fastly, Cloudflare, and CloudFront with Cache-Control tips and debug headers.
CDN Articles
Client Hints for Responsive Images: Sec-CH-DPR, Sec-CH-Width & Critical-CH in 2026
Client Hints (Sec-CH-DPR, Sec-CH-Width, Critical-CH) let your CDN pick byte-perfect image sizes in 2026. Practical setup, worker code, and real LCP wins from a Chrome-heavy audit.
Cache-Status Header: Debug CDN Hits and Misses (RFC 9211)
Learn how RFC 9211's Cache-Status header exposes hits, misses, forwards, and coalesced requests across your CDN chain. Includes vendor mapping and TTFB attribution patterns.
Compression Dictionaries Transport: Cut JavaScript Payload by 80% in 2026
Compression Dictionaries Transport (dcb/dcz) ships in Chrome 123+ and can shrink your JavaScript delta updates by 80-95%. Here's the production setup, real numbers, and the gotchas the spec doesn't warn you about.
JavaScript Bundle Optimization: Ship Less Code, Load Faster
Learn how to cut your JavaScript bundle size with code splitting, tree shaking, Vite 6, vendor splitting, and performance budgets. Practical techniques with code examples to improve Core Web Vitals and load times.