A data race that doesn't compile (in Rust)

Home » Posts A data race that doesn't compile June 23, 2026 · 16 min How I taught Rust’s type system to refuse my own parallel-Redux data races, with one false start and one mind-shift. There’s a class of bug I’ve spent more nights chasing than I care to remember. The kind that only happens under load, vanishes when you attach a debugger, and takes three engineers a weekend to corner. Data races. Rust’s borrow checker prevents most of them at the value level. But not all of them, and definitely not the question that interested me here: can the compiler refuse to build a parallel reducer pipeline where two reducers might write to the same piece of state? Turns out yes. This post is the story of how I got there in ruxe, my Redux-flavored Rust learning library.

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Excerpt limited to ~120 words for fair-use compliance. The full article is at Corentin Corgié.