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用于不精确的去重统计，标准误差为0.81%，可以用于访问量统计或者其他不需要精确统计的场景
# 一、使用方法
提供了pfadd、pfcount，第一个用于增加计数，第二个是获取计数
![[Snipaste_2023-02-23_17-24-34 11.png]]
