This is just a PoC to show code that's not thread safe
Backburner configuration is taken directly from https://github.com/nesquena/backburner without much changes
When testing socket connection in random_job.rb, make sure your port is open (this example uses port 3306)
To insert job into queue:
$ ruby main.rb
To execute the job:
$ ruby worker.rb
DO NOT forget, if you have any changes in random_job.rb then you need to restart your worker.rb