RubyConf 2021 - Parallel testing with Ractors - Putting CPU's to work by Vinicius Stock

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Published on ● Video Link: https://www.youtube.com/watch?v=rdwvvDMmsAQ


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Parallelizing tests is an opportune way of reducing the total runtime for a test suite. Rails achieves this by forking multiple separate workers that fetch tests from a queue. In Ruby 3, Ractors introduced new mechanisms for executing code in parallel. Can they be leveraged by a test framework? And how would that compare to current parallelization solutions?

Let’s find the answers to these questions by building a test framework built on Ractors, from scratch. We’ll compare the current solutions for parallelization and what advantages or limitations Ractors bring when used in this context.



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