Module failure_detector

Structs

• HeartbeatHistory 🔒
  Holds the heartbeat statistics. It is capped by the number of samples specified in max_sample_size.
• PhiAccrualFailureDetector 🔒
  This is our port of Akka’s “PhiAccrualFailureDetector” under Apache License 2.0.
• PhiAccrualFailureDetectorOptions

Functions

• phi 🔒
  Calculation of phi, derived from the Cumulative distribution function for N(mean, stdDeviation) normal distribution, given by 1.0 / (1.0 + math.exp(-y * (1.5976 + 0.070566 * y * y))) where y = (x - mean) / standard_deviation This is an approximation defined in β Mathematics Handbook (Logistic approximation). Error is 0.00014 at +- 3.16 The calculated value is equivalent to -log10(1 - CDF(y))