Grokking System Design Fundamentals
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CDN Architecture

Points of Presence (PoPs) and Edge Servers

A Point of Presence (PoP) is a physical location containing a group of edge servers within the CDN's distributed network. PoPs are strategically situated across various geographical regions to minimize the latency experienced by users when requesting content. Each PoP typically consists of multiple edge servers to provide redundancy, fault tolerance, and load balancing.

Edge servers are the servers within a PoP that store cached content and serve it to users




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