How CDN Caching Affects Traffic Visibility

A CDN absorbs requests before they reach your origin server. That's the point. But it also means your origin-level analytics only see a fraction of total traffic: the cache misses.

What gets hidden

• Cached page requests: a popular article served thousands of times may generate one origin hit per cache TTL.
• Bot traffic hitting cached URLs: scanners and scrapers that hit cached paths never appear in origin logs.
• Geographic distribution: CDN edge nodes absorb traffic close to users; origin logs show the CDN IP, not the visitor.
• Attack traffic: a DDoS targeting cached URLs may be absorbed entirely by the CDN, invisible to your origin monitoring.

How to restore visibility

Pull logs from the CDN edge layer, not just origin. Most CDNs expose access logs or a log-forwarding integration. Alternatively, deploy a reverse proxy in front of your CDN that captures and analyzes all traffic before the cache decision. Karbon sits at this layer and gives full request visibility regardless of cache hit rate.