PB-2395: +3rd party

Author: adk-swisstopo

get-started/retry.md

@@ -15,6 +15,10 @@ throttled or otherwise permanently dropped. To mitigate this
 we recommend you implement retries using a truncated exponential backoff
 algorithm with jitter.
 
+You are welcome to use a third party library to implement your retry strategy
+but you should verify it actually implements a truncated exponential backoff
+algorithm with jitter with reasonable parametres under your control.
+
 ## Truncated exponential backoff algorithm with jitter
 
 Here is an example of algorithm that implements the recommended retry strategy: