actioncable/lib/action_cable/subscription_adapter/async.rb


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require 'action_cable/subscription_adapter/inline'

module ActionCable
  module SubscriptionAdapter
    class Async < Inline # :nodoc:
      private
        def new_subscriber_map
          AsyncSubscriberMap.new
        end

        class AsyncSubscriberMap < SubscriberMap
          def add_subscriber(*)
            Concurrent.global_io_executor.post { super }
          end

          def invoke_callback(*)
            Concurrent.global_io_executor.post { super }
          end
        end
    end
  end
end