Fallbacker/timer-fallbacker

# The forwarder max attempt times.
max_attempts: 3
# The exponential_backoff is the standard retry duration, and the time for each retry is expanded
# by 2 times until the number of retries reaches the maximum.(Time unit is millisecond.)
exponential_backoff: 2000
# The max backoff time used in retrying, which would override the latency time when the latency time
# with exponential increasing larger than it.(Time unit is millisecond.)
max_backoff: 5000