Teaching Rust's type system to prevent parallel-Redux data races at compile time
By
stmw
2h ago· 16 min readenInsight
Summary
A deep technical exploration of how the author taught Rust's type system to statically prevent data races in a parallel-Redux reducer pipeline. The article covers the problem of data races that Rust's borrow checker alone cannot catch, details a false start approach, and describes a mind-shift that led to a working compile-time solution using Rust's type system to ensure that no two parallel reducers can write to the same piece of state.
Source
Hacker NewsTeaching Rust's type system to prevent parallel-Redux data races at compile timecorentin-core.github.ioKey quotes
· 3 pulledThere'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?
How I taught Rust's type system to refuse my own parallel-Redux data races, with one false start and one mind-shift.
How I taught Rust’s type system to refuse my own parallel-Redux data races, with one false start and one mind-shift.
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