title: Get sidekiq to execute a job immediately
body: <p>At the moment, I have a sidekiq job like this:</p>
  
  <pre><code>class SyncUser
    include Sidekiq::Worker
  
    def perform(user_id)
      #do stuff
    end
  end
  </code></pre>
  
  <p>I am placing a job on the queue like this:</p>
  
  <pre><code>SyncUser.perform_async user.id
  </code></pre>
  
  <p>This all works of course but there is a bit of a lag between calling perform_async and the job actually getting executed.</p>
  
  <p>Is there anything else I can do to tell sidekiq to execute the job immediately?</p>