CloudFlare DNS is simple, fast and flexible

What this post added

This post introduces Cloudflare's Anycast DNS service, highlighting its advantages over traditional DNS providers. Key technical contributions include: 1. Explanation of Anycast routing for reduced latency by directing queries to the nearest data center. 2. Discussion of low TTLs (5 minutes by default) for rapid DNS record updates, enabling dynamic IP changes for failover and scripting. 3. Explanation of how low TTLs aid in DDoS mitigation by allowing on-the-fly IP address changes for null-routing.