Anycast
Anycast is a networking technique where the same IP address is shared among multiple servers, with data packets routed to the closest or most available one based on network topology. This method enhances efficiency in global internet services by reducing latency and improving load distribution, making it a go-to solution for modern content delivery networks like those used by major websites.
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Anycast technology powers the global DNS root servers, allowing a single IP address to represent servers in multiple continents, which handles over 100 billion queries per day and makes the internet feel seamlessly fast no matter where you are. This setup was crucial during events like the 2016 Dyn cyberattack, where anycast helped mitigate widespread outages by rerouting traffic dynamically.
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