Ruby on Rails vs Phoenix (Elixir): which is better for real-time apps?
The question is about Ruby on Rails .
Phoenix fits real-time apps better because Elixir's BEAM virtual machine runs many lightweight, independent processes at once instead of relying on Ruby's traditional process and thread model. Rails added native WebSocket support with ActionCable in Rails 5, but that feature still runs inside the same threading model Rails uses for everything else, rather than an actor-based one built for concurrency from the ground up.
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