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Re:Ruby 2.6.0-preview2 released with JIT by dcu on Monday June 04, 2018 @08:40AM (#17227135)
Ruby's GIL will get in your way when working with real world apps. Also in this recent run gin doubles Sinatra's performance

https://www.techempower.com/benchmarks/#section=test&runid=a...

Re:Ruby 2.6.0-preview2 released with JIT by jashmatthews on Monday June 04, 2018 @09:20AM (#17227445)
Interesting! Thanks.

CRuby's GIL doesn't really matter for serving web requests since it's run with one process per core like NodeJS is. It's less memory efficient but doesn't really affect throughput so much. Also, JRuby has no GIL.