-`restart-strategy.fixed-delay.attempts`: Number of restart attempts, used if the default restart strategy is set to "fixed-delay".
Default value is 1, unless "fixed-delay" was activated by enabling checkpoints, in which case the default is `Integer.MAX_VALUE`.
-`restart-strategy.fixed-delay.delay`: Delay between restart attempts, used if the default restart strategy is set to "fixed-delay".
Default value is the `akka.ask.timeout`, unless "fixed-delay" was activated by enabling checkpoints, in which case
the default is 10s.
-`restart-strategy.fixed-delay.delay`: Delay between restart attempts, used if the default restart strategy is set to "fixed-delay". (default: `1 s`)
-`restart-strategy.failure-rate.max-failures-per-interval`: Maximum number of restarts in given time interval before failing a job in "failure-rate" strategy.