title: Given N containers find the blob
body: <p>We have a setup where a given uuid tagged blob could be in one of N containers or none.</p>
  
  <p>What is the best way to check all containers in parallel returning the blob if found or reporting blob doesn't exist?</p>
  
  <p>Our container names are dates and there won't be more than five at any given time there will only be one blob.</p>