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cmu-pasta/fray

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A controlled concurrency testing framework for the JVM

7 mentions on Hacker News by 3 people: 2 stories, 5 comments · first 2025-02-18 · latest 2025-06-08

Mentions per year 7 mentions · busiest year 2025 (7)
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  1. ▲ 70
    Fray: A Controlled Concurrency Testing Framework for the JVM
    story by 0x54MUR41 · 2025-06-08 · 3 comments
  2. https://github.com/cmu-pasta/fray Is a concurrency testing framework for Java. It also does deterministic simulation.
  3. …a model of it. For this you want something like https://github.com/awslabs/shuttle (for Rust), or https://github.com/cmu-pasta/fray (for Java). Or use something custom.
    comment by geertj · 2025-05-15 · in The current state of TLA⁺ development
  4. https://github.com/cmu-pasta/fray Fray is a controlled concurrency testing tool for the JVM that supports record and replay. It could be a perfect backend for codetracer. (I'm the author of Fray)
  5. …and running them under different thread inter-leavings can already reveal so many bugs. [1] [1]: https://github.com/cmu-pasta/fray/blob/main/docs/bugs.md
  6. …to hear your thoughts—feel free to ask me anything! And if you’re curious, give Fray a try. [1]: https://github.com/cmu-pasta/fray
  7. ▲ 4
    Show HN: Fray: A controlled concurrency testing framework for the JVM
    story by aoli-al · 2025-02-18 · 1 comment