Anycast
A networking technique where the same IP address is advertised from multiple locations worldwide.
Anycast is a routing method where many servers in different geographic locations all share the same IP address. When you send a request to an anycast IP, the internet automatically routes you to the nearest server. CDNs like Cloudflare use anycast so that a user in Tokyo connects to a server in Japan while a user in London connects to one in Europe, both using the same IP address. This reduces latency and provides automatic failover if one location goes down.
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Referenced on
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