DDoS Protection

Mon, 01 Jan 0001 00:00:00 +0000

How CDN node mapping actually works

Mon, 10 Nov 2025 00:00:00 +0000

There’s an interview question that used to be a rite of passage in backend engineering: “Walk me through everything that happens when a user types a URL and hits enter.” Most answers got stuck on DNS and TLS. The part most people glossed over — how the request actually lands on the right CDN node out of thousands distributed globally — is where the interesting engineering lives.

Get the mapping wrong and your users in Singapore are hitting a PoP in Frankfurt. The latency shows up in your P75 TTFB, in your bounce rate, and eventually in your revenue numbers.

DNS on Eknix — Web security & performance for the enterprise

DDoS Protection

How CDN node mapping actually works