forked from STI/Astroport.ONE
29 lines
782 B
Python
29 lines
782 B
Python
# coding:utf-8
|
|
|
|
import random
|
|
|
|
|
|
def random_jitter(value: float) -> float:
|
|
"""Jitter the value a random number of milliseconds.
|
|
|
|
This adds up to 1 second of additional time to the original value.
|
|
Prior to backoff version 1.2 this was the default jitter behavior.
|
|
|
|
Args:
|
|
value: The unadulterated backoff value.
|
|
"""
|
|
return value + random.random()
|
|
|
|
|
|
def full_jitter(value: float) -> float:
|
|
"""Jitter the value across the full range (0 to value).
|
|
|
|
This corresponds to the "Full Jitter" algorithm specified in the
|
|
AWS blog's post on the performance of various jitter algorithms.
|
|
(http://www.awsarchitectureblog.com/2015/03/backoff.html)
|
|
|
|
Args:
|
|
value: The unadulterated backoff value.
|
|
"""
|
|
return random.uniform(0, value)
|