CloudFlare DNS is simple, fast and flexible

This post introduces Cloudflare's DNS service, highlighting its core features and advantages over traditional DNS providers. It explains the fundamental concepts of DNS resolution, the limitations of traditional DNS (latency due to geographical distance and long TTLs), and how Cloudflare's Anycast network addresses these issues by routing requests to the nearest data center. The post emphasizes the benefits of short TTLs (5 minutes by default) for rapid DNS record updates, enabling dynamic IP address changes for services like DynDNS and quick failover for enterprise services. It also details how low TTLs aid in on-the-fly attack mitigation by allowing rapid null-routing of malicious traffic. The post concludes by mentioning ongoing investigations into future DNS-related services, such as geo-based routing.