rayon-rs/rayon

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

13269 stars · 604 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Rayon is a data-parallelism library for Rust that converts sequential computations into parallel ones with minimal code changes, typically by swapping iter() for par_iter(). It uses work-stealing scheduling and guarantees data-race freedom through Rust's type system.

Use cases

• parallelize iterator pipelines in Rust
• speed up CPU-bound data processing
• run recursive divide-and-conquer tasks in parallel
• create custom thread pools for parallel workloads
• parallelize collection map/reduce operations safely

When to choose

• you want near-effortless data parallelism in Rust
• you need compile-time data-race guarantees
• you want dynamic work-stealing load balancing
• your workload is CPU-bound and parallelizable

When to avoid

• your workload is I/O-bound rather than CPU-bound
• you need async task concurrency rather than data parallelism
• you require fine-grained control over thread scheduling
• you target a Rust version older than 1.85

Facets

library · maturity stable

concurrency developer-tools performance rust cross-platform data-parallelism parallel-iterators work-stealing thread-pool data-race-freedom algorithms

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