GoKawiilCloudflare shrinks 1.1.1.1 DNS cache entries to reclaim 100TB of RAM
Cloudflare redesigned how DNS cache entries are stored in memory for its 1.1.1.1 resolver platform, Big Pineapple, cutting each entry's size from 953 bytes to 420 bytes. The changes, detailed by systems engineer Sebastiaan Neuteboom, involved five Rust-level optimizations including fixed-size data structures, merged record lists, and raw wire-format storage instead of padded fields.