title: Scheduler without CRON JOBS in RAILS 4.2.5
body: <p>I want to create a Scheduling functionality where we need to call the external API and these operations need to be processed on background. How can we do it without using any OS CRON JOBS. I'm new to rails, please give me some suggestions</p>
  
  <p>I have seen some gems like Whenever which uses OS CRON's but my requirement is without using those CRON's.</p>