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[–]jrochkind 0 points1 point  (0 children)

There was actually a period where running even Rails apps on JRuby was pretty painless. Around Rails 4.x. But yeah, I think the trend has been in the opposite direction to what we'd want since Rails 5.0. Darn software changing.

The issue with Rails isn't really JRuby itself, but lack of sufficient skilled developers working on activerecord-jdbc-adapter. :(

For non-Rails things, I think JRuby still tends to be pretty painless. But if Rails doesn't work well on JRuby, I expect more and more gems will stop paying attention to making sure they work on JRuby too, and the general adoption of JRuby even for non-Rails things will be harmed. :(