September 23, 2026•1 min read•from InfoQ

Cloudflare's Data Innovation Frees 100 TB, Boosts DNS Performance

Cloudflare redesigned the in-memory representation of its Big Pineapple DNS cache, reducing the per-entry footprint by 56% and freeing roughly 100 TB of working-set memory across its fleet. The Rust-based changes also increased cache insertion throughput by 43% and reduced lookup latency by 19%, while enabling Cloudflare to increase cache capacity without additional memory.

By Leela Kumili

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Tagged with

#DNS cache

#Cloudflare

#memory

#Big Pineapple

#latency

#throughput

#cache capacity

#Rust

#in-memory representation

#per-entry footprint

#1.1.1.1

#working-set memory

#cache insertion

#lookup latency

#fleet

#redesign

#optimization

#performance

#data structures

#cache management