Exponential Backoff (Any AWS Service)

• If you get throttling exception, use expotnential backoff
  • Which included in AWS SDK API calls
  • Must implement yourself if you use AWS API as-is
• Concept:
  • Retry if fail, but double everytime there is another fail
  • For example:
    • 1st retry: fail, wait another 1 second
    • 2nd retry: fail, wait another 2 second
    • 3rd retry: fail, wait another 4 second
    • 4th retry: fail, wait another 8 second
    • 5th retry: fail, wait another 16 second
  • This is to reduce the load on the server if many clients connect the same time
• Note: We only implement retries on 5xx server errors.