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In a content distribution network (CDN), DNS (Domain Name System) plays a crucial role in routing user requests to the nearest edge server, ensuring faster content delivery. When a user requests a resource, the DNS resolves the domain name to the IP address of the optimal server based on geographic proximity, load, and server availability. This minimizes latency and enhances the user experience by reducing the time it takes to access content. Additionally, DNS can provide failover capabilities by directing traffic away from unavailable servers.

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