Saving 100 terabytes of memory by optimizing 1.1.1.1's DNS cache
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发生了什么
Big Pineapple , the platform behind 1.1.1.1 , Gateway DNS , DNS Firewall , AS112 , and several other Cloudflare DNS services, stores over 250 billion DNS cache entries at any given time. At that scale, wasting a single byte per entry costs more than 250 gigabytes of memory across our fleet. Five successive changes to how cache entries are stored in memory cut the per-entry footprint by over 50%. Across our fleet, th…
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