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I expect a second wave is most likely to come if TruffleRuby takes off (perhaps when it has full support for Rails). https://pragtob.wordpress.com/2017/01/24/b

• cutler 9y ago
  .... and Substrate VM. JRuby has also made great strides recently.
  • holydude 9y ago
    But the question is when that will be available? It might be too late.