blog.cloudflare.com· Aug 27, 2026· by Sebastiaan Neuteboom

How we saved 100 terabytes of memory by optimizing 1.1.1.1’s DNS cache

Open Original Article ↗
Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#1.1.1.1#Deep Dive#DNS#Engineering#Optimization#Performance#Rust