title: Youtube API: Get subscribers counts of a million channels
body: <p>scenario: MySQL database with a million entries, containing Youtube channel IDs and subscribers counts. Now I would like to update the subscribers counts periodically (maybe once a week).</p>
  
  <p>I am wondering if such large requests are even possible with the API? And if so, what would be the most efficient way to get the subscribers count of a million channels? And if not so, can you think of a work-around?</p>
  
  <p>Thank you very much!</p>