The performance difference between json 2.7.6 and 3.0.0 is noticeable in Sidekiq's load testing script (~21.0sec to 20.5sec, ~4-5%). That's really hard to do with mature software like Ruby; Jean's optimization work here has been stellar.
I'll probably release the final 3.0.0 version early September, so if you got time please try the RC1 and submit any feedback you may have: github.com/ruby/json/re...
1 repost11 likes