Anycast DNS
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Anycast 是一种网络寻址方法，同一个 IP 地址从多个地理位置同时发布。在 [[dns|DNS]] 中，Anycast 路由将查询定向到最近的服务器，从而提升性能并提供 DDoS 防御能力。
示例
Cloudflare's 1.1.1.1 DNS resolver uses anycast — your query is handled by the closest data center, whether in Tokyo, London, or São Paulo.