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Engineering Blog & System Architecture Notes

In depth articles, benchmarks, and postmortems on high concurrency backends, custom network protocols, WebRTC real time streaming, native AI systems and Web Development.

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Everything You Need to Know About IPv4, IPv6, Dual Stack, DNS64, and NAT64

Everything You Need to Know About IPv4, IPv6, Dual Stack, DNS64, and NAT64

A clear, theory light breakdown of networking technologies for web developers. Starting from scratch, we cover the difference between public and private IP addresses, how Dual Stack, DNS64, NAT64, and 464XLAT work in mobile networks, why Cloudflare throws an error when adding an IPv6 address from Hetzner, and how to properly configure your database, rate limits, and server firewall.

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