title: More sidekiq instances vs higher concurrency
body: <p>I'm setting up my sidekiq on production and I'm wondering how should I setup sidekiq instances.</p>
  
  <p>I've got 3 different types of workers and 8 CPU cores and the question is if it's better to make 3 instances with concurrencies 8, 15 and 12 or should it be 8 instances with lower concurrencies for each instance, or maybe something between like for example 6 instances?</p>
  
  <p>What are the pros and cons of the ways I've mentioned?</p>