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Vercel Edge Cache: Sub-10ms Global TTFB
InfrastructureIntermediate2026-06-05•6 min read
Key Performance Metrics
8ms
TTFB
99.4%
Cache Hit
-45%
Cloud Bills
"Porting a legacy server-side application to Vercel's Edge Network, utilizing stale-while-revalidate and localized routing for immediate loads."
Vercel Edge Cache Optimization Case Study
Serving users globally with sub-10ms latency requires caching strategies near the user. This case study details the optimization of a legacy application by migrating it to Vercel's Edge Network.
Methodology
We configured Next.js stale-while-revalidate caching headers and deployed custom Edge Middleware on Vercel to route requests to the nearest edge cache node.