🌍 Does Your Request Really Travel 13,000 km? Understanding Edge Locations, CDN, and Caching
When you open YouTube in India, do you think your request actually travels all the way to a data center in the US-13,000 km away-every single time? The answer is: No.And thank goodness for that-otherwise, you’d be staring at endless buffering wheels ...
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CDNCA
Open-source CDN control plane — nodes & plugin marketplace.
The “not 13,000 km every time” framing is the right mental model for newcomers. What we keep teaching operators next is that an edge HIT is local to that PoP — freshness and purge still need a control plane when you run your own nodes. CDNCA is an open-source control plane for self-hosted CDN nodes plus a plugin marketplace; marketplace features roll out release by release. Did you measure TTFB before/after putting a cache in the path, or was the win mostly perceived smoothness?