Now, we’ve optimized how ISR cache updates work, leading to:

Faster revalidations with lower Time to First Byte (TTFB)

More efficient cache updates, reducing compute overhead

Greater cost efficiency, with up to 65% savings on ISR reads and writes

These improvements require no configuration changes—just redeploy to get the benefits.

Link to heading What’s new: Faster, more efficient ISR

Vercel has been continuously improving our support for ISR since it was first introduced. Our latest updates focus on speed and cost efficiency, with two major improvements:

Link to heading Faster: Regionalized caching

ISR cache entries are now stored in the same region as your functions, meaning:

Lower latency for cache retrieval

Faster revalidations when regenerating content

Better performance for global users, especially those outside North America

Regionalized ISR improves TTFB latency by up to 80% when an ISR cache read occurs within the same geographic area.…