nthj / gone-in-60-milliseconds

Further resources and some code around a talk originally given at Austin on Rails on May 24th, 2016.

Slides

PDF here :)

Further Resources

Alternatives

• actioncable-js

Gotchas

• Puma unresponsive when there is more than one ActionCable channel

Deployment

• Integrating Action Cable with Passenger Standalone
• Deploying ActionCable to Heroku via @SophieDeBenedetto

Performance

• Action Cable - Friend or Foe?
• Musings on HTTP/2 integration via @tenderlove on GitHub
• What HTTP/2 means for Ruby developers is also nice

Examples of Authentication

module ApplicationCable
  class Connection < ActionCable::Connection::Base
    identified_by :current_user

    def connect
      self.current_user = find_verified_user
    end

    def session
      cookies.encrypted[Rails.application.config.session_options[:key]]
    end

    def ability
      @ability ||= Ability.new(current_user)
    end

    protected
    def find_verified_user
      User.find_by(id: session["user_id"])
    end
  end
end

and

module ApplicationCable
  class Channel < ActionCable::Channel::Base
    delegate :session, :ability, to: :connection
    # dont allow the clients to call those methods
    protected :session, :ability
  end
end

Questions

Hey, I'm @thenthj on Twitter.

Acknowledgements

Thanks to @austinonrails for having me on May 24th, 2016. :)