Package org.springframework.util.backoff

Class ExponentialBackOff

  • All Implemented Interfaces:
    BackOff
    public class ExponentialBackOff
extends Object
implements BackOff
    Implementation of BackOff that increases the back off period for each retry attempt. When the interval has reached the max interval, it is no longer increased. Stops retrying once the max elapsed time has been reached.

    Example: The default interval is 2000L ms, the default multiplier is 1.5, and the default max interval is 30000L. For 10 attempts the sequence will be as follows: 

     request#     back off

  1              2000
  2              3000
  3              4500
  4              6750
  5             10125
  6             15187
  7             22780
  8             30000
  9             30000
 10             30000

    Note that the default max elapsed time is Long.MAX_VALUE. Use setMaxElapsedTime(long) to limit the maximum length of time that an instance should accumulate before returning BackOffExecution.STOP.

    Since:
    4.1
    Author:
    Stephane Nicoll