Vercel's CDN no longer stores responses whose Vary header includes Cookie. They are still served, but not cached, and are logged with the reason vary_key_denied.
Vary support is now available in Cache Rules on every plan. You can normalize known negotiation headers, pass exact values through to the origin when those small differences matter, or bypass cache when the variation is too unpredictable.
Vercel now supports the HTTP Vary header, enabling faster delivery of personalized, cached content based on location and language. Improve site performance and reduce compute automatically with Edge Network caching.
From Variety RSS Feed: Karlovy Vary Intl. Film Festival Celebrates 80 Years of Cinema Excellence, Political Struggle and Above All, Its Film-Loving Audiences
