Cloudflare Cuts 100TB of Memory with Rust DNS Cache Optimizations

Cloudflare detailed five Rust optimizations to its 1.1.1.1 DNS cache platform holding over 250 billion entries, saving 100TB of memory while improving insert speed by 43% and query speed by 19%.

2026-08-28 ~ 2026-08-28 · 3 related posts

• Cloudflare saves 100TB RAM with Rust optimizations — ritakozlov · 2026-08-28
• Cloudflare saved 100TB of memory with 5 changes to 1.1.1.1's DNS cache — ritakozlov · 2026-08-28

1 near-duplicate retellings: DanielLockyer