01a0485d-b638-7195-94bc-d7d28b517d99 post 01a0485d-b638-7195-94bc-d7d28b517d99 0 Stefan Wintermeyer https://vutuv.de/wintermeyer/posts/01a0485d-b638-7195-94bc-d7d28b517d99 2026-08-28 wintermeyer Great engineering story from Cloudflare: optimizing a DNS cache entry from 953 to 420 bytes freed ~100 TB of RAM. At 250 billion cache entries, even saving a single byte matters. And the best part: using less memory also made it faster. https://blog.cloudflare.com/dns-cache-memory-optimization-1111/ Great engineering story from Cloudflare: optimizing a DNS cache entry from 953 to 420 bytes freed ~100 TB of RAM. At 250 billion cache entries, even saving a single byte matters. Stefan Wintermeyer wintermeyer https://vutuv.de/wintermeyer https://vutuv.de/wintermeyer/posts/01a0485d-b638-7195-94bc-d7d28b517d99 https://vutuv.de/wintermeyer/posts/01a0485d-b638-7195-94bc-d7d28b517d99.json https://vutuv.de/wintermeyer/posts/01a0485d-b638-7195-94bc-d7d28b517d99.txt https://vutuv.de/wintermeyer/posts/01a0485d-b638-7195-94bc-d7d28b517d99.md https://vutuv.de/wintermeyer/posts/01a0485d-b638-7195-94bc-d7d28b517d99.xml dns Cloudflare Cache 2 2026-08-30T07:57:56Z 3 2026-08-28 0 0 Great engineering story from Cloudflare: optimizing a DNS cache entry from 953 to 420 bytes freed ~100 TB of RAM. At 250 billion cache entries, even saving a single byte matters. And the best part: using less memory also made it faster. https://blog.cloudflare.com/dns-cache-memory-optimization-1111/ 0 0 0 0 Mihail Moroşan morosanmihail https://vutuv.de/morosanmihail Johannes Tigges johannes_tigges https://vutuv.de/johannes_tigges 0 false