grosser/parallel

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

4264 stars · 265 forks observed · 2026-08-28

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

A Ruby gem that makes parallel processing simple, supporting parallel map/each/flat_map over processes, threads, or Ractors. It is best suited for map-reduce style workloads like parallel downloads, uploads, or CPU-bound computations.

Use cases

• run expensive calculations across all CPU cores in ruby
• parallelize downloads or uploads in ruby
• process a large array with multiple worker processes
• speed up blocking IO operations with threads
• parallel iterate over ActiveRecord records
• use ruby ractors for parallel execution

When to choose

• you need simple parallel map/each semantics in Ruby
• you want to choose between processes, threads, or Ractors with one API
• you need worker pools that grab the next item when free

When to avoid

• you need distributed processing across multiple machines
• you need fine-grained async/concurrent primitives like futures or channels
• you rely on experimental Ractor stability for production-critical code

Facets

library · maturity stable

concurrency developer-tools performance ruby parallel-processing map-reduce threads processes ractors gem algorithms

Member repositories

For agents

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