Vercel announced request collapsing for its CDN—a feature that prevents cache stampedes by consolidating multiple concurrent requests for expired ISR content into a single backend invocation per region. Other requests wait for the cached response instead of triggering redundant function calls. The feature is automatic and requires no manual configuration.
Infrastructure
Preventing the stampede: Request collapsing in the Vercel CDN
Vercel's CDN now automatically collapses concurrent cache miss requests into a single backend call per region, eliminating stampede-induced function invocation spikes during ISR revalidation.
Friday, April 17, 2026 12:00 PM UTC2 MIN READSOURCE: Vercel BlogBY sys://pipeline
Tags
infrastructure
/// RELATED
SafetyApr 24
CVSS scored these two Palo Alto CVEs as manageable. Chained, they gave attackers root access to 13,000 devices.
Two individually low-severity Palo Alto vulnerabilities exploited CVSS's blind spot for attack chains, giving attackers root access to 13,000 devices and exposing a critical flaw in industry vulnerability triage.
InfrastructureApr 17
Bun runtime on Vercel Functions
Vercel launches Bun runtime support for Functions in public beta, delivering 28% lower SSR latency than Node.js through optimized garbage collection and web streams handling.