Cloudflare cuts DNS cache memory footprint by 56% to free 100TB
Cloudflare redesigned the memory layout of its DNS cache entries, reducing each from 953 to 420 bytes. This freed about 100TB of RAM across its fleet, equivalent to 130 servers' worth of DDR5. The changes also improved insert throughput by 43% and reduced lookup latency by 19%.
This summary is AI-generated and original to Mobble; the linked article is the authoritative source.
Original headline: “Cloudflare frees up 100TB of RAM by shrinking 1.1.1.1's DNS cache entries — 250 billion cached DNS entries at any given time means one wasted byte costs 250GB.” Browse more stories.