Saving 100 terabytes of memory by optimizing 1.1.1.1's DNS cache
Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.
Summary
Cloudflare’s Big Pineapple has implemented five memory optimizations that reduced the DNS cache’s per-entry footprint by 56%, resulting in a significant recovery of 100 terabytes of memory across its network. This efficiency boost highlights the impact of thoughtful engineering on resource management.
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