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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
Cloudflare says that it has freed up roughly 100TB of RAM across its global fleet without reconfiguring any physical RAM modules in its servers, and that it did so by redesigning how each DNS cache entry is laid out in memory.
Fri, 28 Aug 2026 15:49:21 GMT
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