A trivial Rails cron job made using the Que gem

cronjob.rb

# app/jobs/cron_job.rb
class CronJob < Que::Job
  # To minimize log clutter from unavailable jobs, 
  #  @run_at should be a bit less than Que.wake_interval
  @run_at = proc { 59.seconds.from_now }

  def run
    
    # Do stuff here
    
    CronJob.enqueue
  end
end

que.rb

# config/initializers/que.rb
Que.mode = :async
Que.wake_interval = 60.seconds