Merge pull request rails#23709 from jankeesvw/set-action-cable-logging-to-debug

Make ActionCable logging less verbose in development

Author: David Heinemeier Hansson

actioncable/lib/action_cable/channel/base.rb

@@ -191,7 +191,7 @@ def unsubscribed
         # Transmit a hash of data to the subscriber. The hash will automatically be wrapped in a JSON envelope with
         # the proper channel identifier marked as the recipient.
         def transmit(data, via: nil)
-          logger.info "#{self.class.name} transmitting #{data.inspect}".tap { |m| m << " (via #{via})" if via }
+          logger.info "#{self.class.name} transmitting #{data.inspect.truncate(300)}".tap { |m| m << " (via #{via})" if via }
           connection.transmit ActiveSupport::JSON.encode(identifier: @identifier, message: data)
         end