Return a duration sampled from an exponential distribution (https://en.wikipedia.org/wiki/Exponential_distribution). Successive events whose intervals are distributed according to this form a memoryless Poisson process. This should be used for repeated network events (e.g. sending a certain type of message) to minimize leaking information to observers.
Synopsis
Declared in <random.h>
std::chrono::microseconds
rand_exp_duration(std::chrono::microseconds mean) noexcept;
Description
The probability of an event occurring before time x is 1 ‐ eˆ‐(x/a) where a is the average interval between events.
Return Value
A duration sampled from an exponential distribution with the given mean.
Parameters
Name |
Description |
mean |
The average interval between events. |
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