FailureAccrualPolicy

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1. final def !=(arg0: Any): Boolean

   

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2. final def ##(): Int

   

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3. final def ==(arg0: Any): Boolean

   

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4. val DefaultConsecutiveFailures: Int

   

5. val DefaultMinimumRequestThreshold: Int

   

6. val DefaultSuccessRateThreshold: Double

   

7. val DefaultSuccessRateWindow: Duration

   

8. final def asInstanceOf[T0]: T0

   

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10. def consecutiveFailures(numFailures: Int, markDeadFor: Stream[Duration]): FailureAccrualPolicy

    

    A policy based on a maximum number of consecutive failures.

    A policy based on a maximum number of consecutive failures. If numFailures occur consecutively, checkFailures() will return a Some(Duration) to mark an endpoint dead for.

    numFailures

    number of consecutive failures

    markDeadFor

    stream of durations to use for the next duration returned from markDeadOnFailure()

11. val constantBackoff: Stream[Duration]

    

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14. def finalize(): Unit

    

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15. final def getClass(): Class[_]

    

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16. def hashCode(): Int

    

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17. final def isInstanceOf[T0]: Boolean

    

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18. final def ne(arg0: AnyRef): Boolean

    

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19. final def notify(): Unit

    

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20. final def notifyAll(): Unit

    

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21. def successRate(requiredSuccessRate: Double, window: Int, markDeadFor: Stream[Duration]): FailureAccrualPolicy

    

    Returns a policy based on an exponentially-weighted moving average success rate over a window of requests.

    Returns a policy based on an exponentially-weighted moving average success rate over a window of requests. A moving average is used so the success rate calculation is biased towards more recent requests; for an endpoint with low traffic, the window will span a longer time period and early successes and failures may not accurately reflect the current health.

    If the computed weighted success rate is less than the required success rate, markDeadOnFailure() will return Some(Duration).

    requiredSuccessRate

    successRate that must be met

    window

    window over which the success rate is tracked. window requests must occur for markDeadOnFailure() to ever return Some(Duration)

    markDeadFor

    stream of durations to use for the next duration returned from markDeadOnFailure()

    See also

    com.twitter.finagle.util.Ema for how the success rate is computed

22. def successRateWithinDuration(requiredSuccessRate: Double, window: Duration, markDeadFor: Stream[Duration]): FailureAccrualPolicy

    

    Returns a policy based on an exponentially-weighted moving average success rate over a time window.

    Returns a policy based on an exponentially-weighted moving average success rate over a time window. A moving average is used so the success rate calculation is biased towards more recent requests.

    If the computed weighted success rate is less than the required success rate, markDeadOnFailure() will return Some(Duration).

    requiredSuccessRate

    successRate that must be met

    window

    window over which the success rate is tracked. markDeadOnFailure() will return None, until we get requests for a duration of at least window.

    markDeadFor

    stream of durations to use for the next duration returned from markDeadOnFailure()

    See also

    com.twitter.finagle.util.Ema for how the success rate is computed

23. def successRateWithinDuration(requiredSuccessRate: Double, window: Duration, markDeadFor: Stream[Duration], minRequestThreshold: Int): FailureAccrualPolicy

    

    Returns a policy based on an exponentially-weighted moving average success rate over a time window.

    Returns a policy based on an exponentially-weighted moving average success rate over a time window. A moving average is used so the success rate calculation is biased towards more recent requests.

    If the computed weighted success rate is less than the required success rate, markDeadOnFailure() will return Some(Duration).

    requiredSuccessRate

    successRate that must be met

    window

    window over which the success rate is tracked. markDeadOnFailure() will return None, until we get requests for a duration of at least window.

    markDeadFor

    stream of durations to use for the next duration returned from markDeadOnFailure()

    minRequestThreshold

    minimum number of requests in the past window for markDeadOnFailure() to return a duration

    See also

    com.twitter.finagle.util.Ema for how the success rate is computed

24. final def synchronized[T0](arg0: ⇒ T0): T0

    

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26. final def wait(): Unit

    

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27. final def wait(arg0: Long, arg1: Int): Unit

    

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28. final def wait(arg0: Long): Unit

    

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