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The article describes optimizations to the `gearhash` Rust crate, adding a NEON backend that doubles performance on ARM64 architectures, improving content-defined chunking for applications like Hugging Face's Xet client.
BuildBuddy's remote cache now uses content-defined chunking (CDC) to enable byte-level reuse of large build outputs, reducing uploads by 40% and disk cache size by 40% in benchmarks.