This story is about how ClickHouse supports Rust components in the C++ code base and the challenges we had to overcome.

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ClickHouse has integrated Rust into its C++ codebase to leverage Rust's strengths while maintaining its existing infrastructure. The process involved initial Rust component testing, integration challenges, and resolving incompatibilities. Key Rust libraries like BLAKE3 and PRQL were added, leading to significant improvements. Despite some issues, the integration of Rust brought enhanced confidence and practical benefits.

A Year of Rust in ClickHouse