:向hyperloglog添加元素 pfadd 2021_12_14:ids "uid-1" "uid-2" "uid-3" "uid-4" pfcount 2021_12_14:ids pfadd 2021
提供了3个命令: pfadd, pfcount, pfmerge,比如2016-03-06的访问用户是uuid-1, uuid-2, uuid-3, uuid-4, 2016-03-05的访 问用户是uid