A CDN isn't one cache β it's hundreds of independent ones, and most are cold. Cloudflare alone runs 300+ data centers, each with its own memory. Your page can be blazing fast in Frankfurt and ice cold in Tokyo, where the first visitor pays the full origin round trip. Across 408,000 measured CDN requests, a cache miss was 3.5Γ slower than a hit. warmup.rocks solves the cold-cache problem at the edge. On a schedule, it requests your pages from 42 countries across 6 continents β each request enter