FailureAccrualPolicy

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6. 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()

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14. final def notify(): Unit

    

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15. final def notifyAll(): Unit

    

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

    

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

    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 succes rate is computed

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

    

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

    

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