Vercel Runtime Logs Now Explain Cache Misses

Vercel's runtime logs now display a Cache Reason for non-fresh cache hits, detailing why a request missed the cache—such as time-based or tag-based revalidation. This feature helps developers debug cache misses and improve hit rates for ISR, Partial Prerendering, and functions with Cache-Control headers. Cache reasons appear in the Logs tab, CLI, and metrics tools.