checkout_beacon_refresh_location_worker_fake.rb

class CheckoutBeaconRefreshLocationWorkerFake
  include Sidekiq::Worker
  sidekiq_options lock: :until_and_while_executing

  def perform(id)
    $tick ||= 0
    $tick += 1
    puts "STARTING #{$tick}"
    sleep 5
    puts "DONE #{$tick}"
  end
end

log.txt

6:46:19 PM worker.1      |   CheckoutBeaconRefreshLocationWorkerFake JID-d62a2a531e984bdc9d949180 INFO: start
6:46:19 PM worker.1      |  STARTING 1
6:46:20 PM worker.1      |   CheckoutBeaconRefreshLocationWorkerFake JID-1b8e1c31ce5d37d00c017fc4 INFO: start
6:46:20 PM worker.1      |   CheckoutBeaconRefreshLocationWorkerFake JID-1b8e1c31ce5d37d00c017fc4 INFO: done: 0.019 sec
6:46:20 PM worker.1      |   CheckoutBeaconRefreshLocationWorkerFake JID-bf07b3d391f496857efce83f INFO: start
6:46:20 PM worker.1      |   CheckoutBeaconRefreshLocationWorkerFake JID-bf07b3d391f496857efce83f INFO: done: 0.018 sec
6:46:24 PM worker.1      |  DONE 1
6:46:24 PM worker.1      |   CheckoutBeaconRefreshLocationWorkerFake JID-d62a2a531e984bdc9d949180 INFO: done: 5.025 sec

rails-console

# All of these commands where issued right after each other, in less than a second's time
[1] pry(main)> CheckoutBeaconRefreshLocationWorkerFake.perform_async(1)
=> "d62a2a531e984bdc9d949180"
[2] pry(main)> CheckoutBeaconRefreshLocationWorkerFake.perform_async(1)
=> "1b8e1c31ce5d37d00c017fc4"
[3] pry(main)> CheckoutBeaconRefreshLocationWorkerFake.perform_async(1)
=> "bf07b3d391f496857efce83f"