Vercel CDN now respects cache-control headers from external origins by default

New Vercel projects will honor cache-control headers by default when proxying requests to external origins, starting April 6th.

What's changing:

• For new projects, Vercel's CDN automatically respects upstream Cache-Control, CDN-Cache-Control, and Vercel-CDN-Cache-Control headers
• Use Cache Tags (Vercel-Cache-Tag header) from origins to purge cached content
• Existing projects can opt in from the project dashboard
• Opt out of caching for specific paths by setting x-vercel-enable-rewrite-caching header to 0

Review upstream cache headers before April 6th for new projects proxying to external origins.