Proxied responses now cacheable via CDN-Cache-Control headers
Vercel's CDN now caches proxied responses to external backends using CDN-Cache-Control and Vercel-CDN-Cache-Control headers, aligning caching behavior with how Vercel Functions are cached. Headers can be returned directly from backends or configured in vercel.json, enabling fine-grained caching control without affecting browser caches.
Vercel’s CDN, which can proxy requests to external backends, now caches proxied responses using the and headers. This aligns caching behavior for external backends with how Vercel Functions are already cached.CDN-Cache-ControlVercel-CDN-Cache-Control
This is available starting today, on all plans, at no additional cost.
Per the Targeted HTTP Cache Control spec (), these headers support standard directives like and , enabling fine-grained control over CDN caching without affecting browser caches.RFC 9213max-agestale-while-revalidate
You can return the headers directly from your backend, or define them in under the key if your backend can't be modified.vercel.jsonheaders
No configuration changes or redeployments required. Return the header (or set it in ) to improve performance, reduce origin load, and ensure fresh content.vercel.json
Learn more about .CDN-Cache-Control headers
Source: original entry ↗
More from Vercel
Follow Vercel to get its new changes in your feed and email digest.
OpenAI Decisions API now available on AI Gateway
OpenAI's Decisions API is now accessible through Vercel's AI Gateway with an OpenAI-compatible endpoint, enabling decision models to answer typed questions and return probabilities, choices, and scores for routing, triage, and guardrails use cases. Support is available across the OpenAI SDK, AI SDK, HTTP API, and CLI with the latest versions.
Timestamp attributes now supported in Vercel Flags
Vercel Flags now supports timestamp attributes for entities, allowing you to create time-based targeting rules. Use this feature to run limited-time campaigns, show content between specific dates, or target users based on registration date.
Glyph Cluster now available in stealth on AI Gateway
Glyph Cluster, a reasoning model for coding and long-context analysis, is now available as a stealth model on Vercel's AI Gateway for Pro and Enterprise plan teams with purchased AI Gateway credits at no cost during the stealth period. The model supports function calling, streams responses, and can be accessed via AI SDK, OpenAI-compatible APIs, and coding agents.