Introduction to Key Changes Features 1. Retry: limit perncetage of retry requests The feature improves the usability of backup requests: if a request exceeds the retry delay threshold, a backup request will be sent; but if the request succeeds within the timeout threshold, it will not be treated as an error. Therefore large amount of backup requests may be sent due to a network jitter, which increases the pressure on the server and could even cause an avanlache.