From the source
From the source
Vercel reduces ISR latency and cost with regional caching and compression.
Vercel has optimized its Incremental Static Regeneration (ISR) caching with regionalized storage and automatic compression, reducing TTFB latency by up to 80% and ISR spend by up to 65%.
The improvements require no configuration changes and are live for all Vercel users upon redeployment.
From the source
Regionalized ISR improves TTFB latency by up to 80% when an ISR cache read occurs within the same geographic area. These improvements are especially visible for those outside the United States.
vercel.com
