Cloudflare engineers detailed how they optimized the DNS cache for their 1.1.1.1 resolver, reducing memory usage by 100 terabytes. The post covers specific data structure improvements and caching strategies that significantly cut footprint without sacrificing lookup performance.
Background
Cloudflare's 1.1.1.1 is one of the world's most popular public DNS resolvers, serving billions of queries daily. Memory-efficient caching is critical at their scale of traffic.
- Source
- Hacker News (RSS)
- Published
- Aug 28, 2026 at 01:17 AM
- Score
- 6.0 / 10