https://www.live-feeds.com/feed/cloudflare-freed-up-100tb-of-ram-behind-its-1-1-1-1-dns-without-adding-a-single-serverContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/cloudflare-freed-up-100tb-of-ram-behind-its-1-1-1-1-dns-without-adding-a-single-serverhttps://www.live-feeds.com/feed/cloudflare-freed-up-100tb-of-ram-behind-its-1-1-1-1-dns-without-adding-a-single-server#u53411Tue, 01 Sep 2026 01:31:10 +0000Cloudflare reclaimed 100TB of memory across its fleet by redesigning the DNS cache for its 1.1.1.1 service. The company achieved this reduction without adding new servers by shrinking individual cache entries and implementing five specific optimizations. These changes halved the memory usage of the DNS cache. Because the system handles 250 billion cached DNS entries simultaneously, removing a single wasted byte from each entry results in a total saving of 250GB of RAM.Why it mattersDNS caches store IP address mappings to speed up internet requests. At the scale of 1.1.1.1, minor inefficiencies