Cloudflare Blog·2w ago·16 read·seniorSaving another 100TB of RAM with math (and Rust)
Cloudflare engineers optimized the memory footprint of their Pingora Backend Router by refactoring the consistent hashing implementation in the pingora-ketama library. By moving from a verbose data structure to a compacted storage format and refining the ring hashing algorithm, they reclaimed over 100TB of RAM globally across their infrastructure. The solution demonstrates the impact of algorithmic efficiency at scale.
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