{"id":201241,"date":"2025-05-10T10:37:39","date_gmt":"2025-05-10T02:37:39","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201241\/"},"modified":"2025-05-10T10:37:39","modified_gmt":"2025-05-10T02:37:39","slug":"redis%e7%89%b9%e6%ae%8a%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8bhyperloglog%e5%9f%ba%e6%95%b0%e7%bb%9f%e8%ae%a1%e7%ae%97%e6%b3%95%e8%ae%b2%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201241\/","title":{"rendered":"Redis\u7279\u6b8a\u6570\u636e\u7c7b\u578bHyperLogLog\u57fa\u6570\u7edf\u8ba1\u7b97\u6cd5\u8bb2\u89e3"},"content":{"rendered":"

<\/b> <\/p>\n

Redis\u7279\u6b8a\u6570\u636e\u7c7b\u578bHyperLogLog\u57fa\u6570\u7edf\u8ba1\u7b97\u6cd5\u8bb2\u89e3<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

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Redis HyperLogLog\u57fa\u6570\u7edf\u8ba1<\/h2>\n

HyperLogLog \u662f\u7528\u6765\u505a\u57fa\u6570\u7edf\u8ba1\u7684\u7b97\u6cd5\u3002<\/p>\n

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\u6bd4\u5982\u6570\u636e\u96c6{1, 3, 5, 7, 5, 7, 8}<\/code>\uff0c\u90a3\u4e48\u8fd9\u4e2a\u6570\u636e\u96c6\u7684\u57fa\u6570\u96c6\u4e3a{1, 3, 5 ,7, 8}<\/code>\uff0c\u57fa\u6570(\u4e0d\u91cd\u590d\u5143\u7d20)\u4e3a5\u3002<\/p>\n

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\u4f46\u662f\u6ce8\u610f\u5728\u8fd9\u4e2a\u6570\u91cf\u7ea7\u4e0b\uff0c\u662f\u4f1a\u5b58\u57280.81%<\/code>\u7684\u9519\u8bef\u7387\u7684\uff0c\u6240\u4ee5\u8bf4\u5177\u4f53\u8fd8\u5f97\u770b\u4e1a\u52a1\u662f\u5426\u53ef\u4ee5\u63a5\u53d7\u8fd9\u6837\u7684\u9519\u8bef\u7387\u3002
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\u4e00\u3001pfadd<\/h3>\n

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pfadd mypf 1 2 3 a b c 3 4 5 c d a<\/pre>\n
<\/p>\n
\u4e8c\u3001pfcount<\/h3>\n
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pfcount mypf<\/pre>\n
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<\/p>\n
\u4e09\u3001pfmerge<\/h3>\n
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pfmerge mypftotal mypf3 mypf4<\/pre>\n
\u628amypf3\u3001mypf4<\/code>\u5408\u5e76\u5230mypftotal <\/code>\u4e0a\u3002<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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