FOSDEM 2026: Building performance-critical Python tools with Rust
I gave a talk at FOSDEM 2026 in the Rust devroom on building performance-critical Python tools with Rust.
Python dominates web development, but often comes with performance and scaling issues. Recently, the Python ecosystem
has seen massive performance gains from projects written in Rust, such as uv and ruff. At
Cloudsmith, we achieved 2x throughput on our 10-year-old Django monolith by integrating
Rust-based tools and contributed features back upstream.
The talk covers our methodology: establishing performance baselines through load testing, identifying bottlenecks, and integrating existing Rust-based tools with minimal code changes. We also share our experience contributing observability features upstream to Granian, ensuring production-ready monitoring that benefits the entire community.