Vercel CDN no longer caches responses with Vary: Cookie
First reported · 24d ago · 1 source
Crest summary — written by AI from the 1 source below; every figure is checked against them · model deepseek-chat
Summary
Vercel's CDN stopped caching origin responses when the Vary header includes Cookie, since cookie values are often visitor-specific.
Key facts
- Vercel CDN no longer caches origin responses when Vary includes Cookie.
- Vary tells a cache which request headers may change the response.
- Cookies often contain visitor-specific values.
Why it matters
Sites relying on Vercel's CDN for responses that vary by Cookie will no longer get cached copies, so those requests now reach the origin.
Companies
Technologies
- Vercel CDNservice
Original sources (1)
The report this event was built from. Crest of Tech keeps no article bodies: the full text is at each source.
- VercelOfficial · PrimaryVercel CDN no longer caches responses with Vary: Cookie · By Shina PatelRead at Vercel