Preventing the stampede: Request collapsing in the Vercel CDN

T1Covered by 1 source · first reported by Vercel (blog + changelog) at 25 Sept 2025, 13:00 UTC

Incremental Static Regeneration When you deploy a Next.js app with(ISR), pages get regenerated on-demand after their cache expires. ISR lets you get the performance benefits of static generation while keeping your content fresh. But there's a problem. When many users request the same ISR route at…