{"id":201217,"date":"2025-05-10T08:35:06","date_gmt":"2025-05-10T00:35:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201217\/"},"modified":"2025-05-10T08:35:06","modified_gmt":"2025-05-10T00:35:06","slug":"redis%e4%bd%bf%e7%94%a8%e5%85%83%e7%b4%a0%e5%88%a0%e9%99%a4%e7%9a%84%e5%b8%83%e9%9a%86%e8%bf%87%e6%bb%a4%e5%99%a8%e6%9d%a5%e8%a7%a3%e5%86%b3%e7%bc%93%e5%ad%98%e7%a9%bf%e9%80%8f%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201217\/","title":{"rendered":"Redis\u4f7f\u7528\u5143\u7d20\u5220\u9664\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u6765\u89e3\u51b3\u7f13\u5b58\u7a7f\u900f\u95ee\u9898"},"content":{"rendered":"

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

Redis\u4f7f\u7528\u5143\u7d20\u5220\u9664\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u6765\u89e3\u51b3\u7f13\u5b58\u7a7f\u900f\u95ee\u9898<\/h1>\n

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

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\u7f13\u5b58\u96ea\u5d29<\/h2>\n

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\u5e03\u9686\u8fc7\u6ee4\u5668\uff08Bloom Filter\uff09<\/h2>\n

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\u4f4d\u56fe\uff08Bitmap\uff09<\/h3>\n

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\u5982\u679c\u53d1\u751f\u8fc7\u591a\u7684\u54c8\u5e0c\u78b0\u649e\uff0c\u5c31\u4f1a\u5f71\u54cd\u5230\u5224\u65ad\u7684\u51c6\u786e\u6027\uff0c\u6240\u4ee5\u4e3a\u4e86\u51cf\u5c11\u54c8\u5e0c\u78b0\u649e\uff0c\u6211\u4eec\u4e00\u822c\u4f1a\u7efc\u5408\u8003\u8651\u4ee5\u4e0b2\u4e2a\u56e0\u7d20\uff1a<\/p>\n

1\u3001\u589e\u5927\u4f4d\u56fe\u6570\u7ec4\u7684\u5927\u5c0f\uff08\u4f4d\u56fe\u6570\u7ec4\u8d8a\u5927\uff0c\u5360\u7528\u7684\u5185\u5b58\u8d8a\u5927\uff09\u3002<\/p>\n

2\u3001\u589e\u52a0\u54c8\u5e0c\u51fd\u6570\u7684\u6b21\u6570\uff08\u540c\u4e00\u4e2akey\u503c\u7ecf\u8fc71\u4e2a\u51fd\u6570\u76f8\u7b49\u4e86\uff0c\u90a3\u4e48\u7ecf\u8fc72\u4e2a\u6216\u8005\u66f4\u591a\u4e2a\u54c8\u5e0c\u51fd\u6570\u7684\u8ba1\u7b97\uff0c\u90fd\u5f97\u5230\u76f8\u7b49\u7ed3\u679c\u7684\u6982\u7387\u5c31\u81ea\u7136\u4f1a\u964d\u4f4e\u4e86\uff09\u3002<\/p>\n

\u4e0a\u9762\u4e24\u4e2a\u65b9\u6cd5\u6211\u4eec\u9700\u8981\u7efc\u5408\u8003\u8651\uff1a\u6bd4\u5982\u589e\u5927\u4f4d\u6570\u7ec4\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u6d88\u8017\u66f4\u591a\u7684\u7a7a\u95f4\uff0c\u800c\u7ecf\u8fc7\u8d8a\u591a\u7684\u54c8\u5e0c\u8ba1\u7b97\u4e5f\u4f1a\u6d88\u8017cpu\u5f71\u54cd\u5230\u6700\u7ec8\u7684\u8ba1\u7b97\u65f6\u95f4\uff0c\u6240\u4ee5\u4f4d\u6570\u7ec4\u5230\u5e95\u591a\u5927\uff0c\u54c8\u5e0c\u51fd\u6570\u6b21\u6570\u53c8\u5230\u5e95\u9700\u8981\u8ba1\u7b97\u591a\u5c11\u6b21\u5408\u9002\u9700\u8981\u5177\u4f53\u60c5\u51b5\u5177\u4f53\u5206\u6790\u3002<\/p>\n

\u5e03\u9686\u8fc7\u6ee4\u5668\u76842\u5927\u7279\u70b9<\/h3>\n

\u4e0b\u9762\u8fd9\u4e2a\u5c31\u662f\u4e00\u4e2a\u7ecf\u8fc7\u4e862\u6b21\u54c8\u5e0c\u51fd\u6570\u5f97\u5230\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u6839\u636e\u4e0b\u56fe\u6211\u4eec\u5f88\u5bb9\u6613\u770b\u5230\uff0c\u5047\u5982\u6211\u4eec\u7684Redis\u6839\u672c\u4e0d\u5b58\u5728\uff0c\u4f46\u662fRedis\u7ecf\u8fc72\u6b21\u54c8\u5e0c\u51fd\u6570\u4e4b\u540e\u5f97\u5230\u7684\u4e24\u4e2a\u4f4d\u7f6e\u5df2\u7ecf\u662f1\u4e86\uff08\u4e00\u4e2a\u662fwolf\u901a\u8fc7f2\u5f97\u5230\uff0c\u4e00\u4e2a\u662fNosql\u901a\u8fc7f1\u5f97\u5230\uff09\u3002<\/p>\n

<\/p>\n

\u6240\u4ee5\u901a\u8fc7\u4e0a\u9762\u7684\u73b0\u8c61\uff0c\u6211\u4eec\u4ece\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u89d2\u5ea6\u53ef\u4ee5\u5f97\u51fa\u5e03\u9686\u8fc7\u6ee4\u5668\u4e3b\u8981\u67092\u5927\u7279\u70b9\uff1a<\/p>\n

1\u3001\u5982\u679c\u5e03\u9686\u8fc7\u6ee4\u5668\u5224\u65ad\u4e00\u4e2a\u5143\u7d20\u5b58\u5728\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5143\u7d20\u53ef\u80fd\u5b58\u5728<\/strong>\u3002<\/p>\n

2\u3001\u5982\u679c\u5e03\u9686\u8fc7\u6ee4\u5668\u5224\u65ad\u4e00\u4e2a\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5143\u7d20\u4e00\u5b9a\u4e0d\u5b58\u5728<\/strong>\u3002<\/p>\n

\u800c\u4ece\u5143\u7d20\u7684\u89d2\u5ea6\u4e5f\u53ef\u4ee5\u5f97\u51fa2\u5927\u7279\u70b9\uff1a<\/p>\n

1\u3001\u5982\u679c\u5143\u7d20\u5b9e\u9645\u5b58\u5728\uff0c\u90a3\u4e48\u5e03\u9686\u8fc7\u6ee4\u5668\u4e00\u5b9a\u4f1a\u5224\u65ad\u5b58\u5728<\/strong>\u3002<\/p>\n

2\u3001\u5982\u679c\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u90a3\u4e48\u5e03\u9686\u8fc7\u6ee4\u5668\u53ef\u80fd\u4f1a\u5224\u65ad\u5b58\u5728<\/strong>\u3002<\/p>\n

PS\uff1a\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u7ecf\u8fc7N\u6b21\u54c8\u5e0c\u51fd\u6570\uff0c\u5219\u9700\u8981\u5f97\u5230\u7684N\u4e2a\u4f4d\u7f6e\u90fd\u662f1\u624d\u80fd\u5224\u5b9a\u5b58\u5728\uff0c\u53ea\u8981\u6709\u4e00\u4e2a\u662f0\uff0c\u5c31\u53ef\u4ee5\u5224\u5b9a\u4e3a\u5143\u7d20\u4e0d\u5b58\u5728\u5e03\u9686\u8fc7\u6ee4\u5668\u4e2d<\/strong>\u3002<\/p>\n

fpp<\/h4>\n

\u56e0\u4e3a\u5e03\u9686\u8fc7\u6ee4\u5668\u4e2d\u603b\u662f\u4f1a\u5b58\u5728\u8bef\u5224\u7387\uff0c\u56e0\u4e3a\u54c8\u5e0c\u78b0\u649e\u662f\u4e0d\u53ef\u80fd\u767e\u5206\u767e\u907f\u514d\u7684\u3002\u5e03\u9686\u8fc7\u6ee4\u5668\u5bf9\u8fd9\u79cd\u8bef\u5224\u7387\u79f0\u4e4b\u4e3a\u5047\u9633\u6027\u6982\u7387<\/strong>\uff0c\u5373\uff1aFalse Positive Probability\uff0c\u7b80\u79f0\u4e3afpp\u3002<\/p>\n

\u5728\u5b9e\u8df5\u4e2d\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\u65f6\u53ef\u4ee5\u81ea\u5df1\u5b9a\u4e49\u4e00\u4e2afpp\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u6839\u636e\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u7406\u8bba\u8ba1\u7b97\u51fa\u9700\u8981\u591a\u5c11\u4e2a\u54c8\u5e0c\u51fd\u6570\u548c\u591a\u5927\u7684\u4f4d\u6570\u7ec4\u7a7a\u95f4\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u8fd9\u4e2afpp\u4e0d\u80fd\u5b9a\u4e49\u4e3a100%\uff0c\u56e0\u4e3a\u65e0\u6cd5\u767e\u5206\u4fdd\u8bc1\u4e0d\u53d1\u751f\u54c8\u5e0c\u78b0\u649e\u3002<\/p>\n

\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5b9e\u73b0(Guava)<\/h3>\n

\u5728Guava\u7684\u5305\u4e2d\u63d0\u4f9b\u4e86\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5b9e\u73b0\uff0c\u4e0b\u9762\u5c31\u901a\u8fc7Guava\u6765\u4f53\u4f1a\u4e00\u4e0b\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5e94\u7528\uff1a
1\u3001\u5f15\u5165pom<\/code>\u4f9d\u8d56<\/p>\n

\n\n   \n    \n     com.google.guava\n    \n    \u53ef\u4ee5\u8fdb\u5165\u7f51\u7ad9\u8ba1\u7b97bit\u6570\u7ec4\u5927\u5c0f\u548c\u54c8\u5e0c\u51fd\u6570\u4e2a\u6570\u3002\n    
<\/p>\n\n    
\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5982\u4f55\u5220\u9664<\/h3>\n\n    
\u4e0a\u9762\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u6211\u4eec\u77e5\u9053\uff0c\u5224\u65ad\u4e00\u4e2a\u5143\u7d20\u5b58\u5728\u5c31\u662f\u5224\u65ad\u5bf9\u5e94\u4f4d\u7f6e\u662f\u5426\u4e3a1\u6765\u786e\u5b9a\u7684\uff0c\u4f46\u662f\u5982\u679c\u8981\u5220\u9664\u6389\u4e00\u4e2a\u5143\u7d20\u662f\u4e0d\u80fd\u76f4\u63a5\u628a1\u6539\u62100\u7684\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u4f4d\u7f6e\u53ef\u80fd\u5b58\u5728\u5176\u4ed6\u5143\u7d20\uff0c\u6240\u4ee5\u5982\u679c\u8981\u652f\u6301\u5220\u9664\uff0c\u90a3\u6211\u4eec\u5e94\u8be5\u600e\u4e48\u505a\u5462\uff1f\u6700\u7b80\u5355\u7684\u505a\u6cd5\u5c31\u662f\u52a0\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u5c31\u662f\u8bf4\u4f4d\u6570\u7ec4\u7684\u6bcf\u4e2a\u4f4d\u5982\u679c\u4e0d\u5b58\u5728\u5c31\u662f0\uff0c\u5b58\u5728\u51e0\u4e2a\u5143\u7d20\u5c31\u5b58\u5177\u4f53\u7684\u6570\u5b57\uff0c\u800c\u4e0d\u4ec5\u4ec5\u53ea\u662f\u5b581\uff0c\u90a3\u4e48\u8fd9\u5c31\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u672c\u6765\u5b581\u5c31\u662f\u4e00\u4f4d\u5c31\u53ef\u4ee5\u6ee1\u8db3\u4e86\uff0c\u4f46\u662f\u5982\u679c\u8981\u5b58\u5177\u4f53\u7684\u6570\u5b57\u6bd4\u5982\u8bf42\uff0c\u90a3\u5c31\u9700\u89812\u4f4d\u4e86\uff0c\u6240\u4ee5\u5e26\u6709\u8ba1\u6570\u5668\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u4f1a\u5360\u7528\u66f4\u5927\u7684\u7a7a\u95f4<\/strong>\u3002<\/p>\n\n    
\u5e26\u6709\u8ba1\u6570\u5668\u7684\u5e03\u9686\u8fc7\u6ee4\u5668<\/h4>\n\n    
\u4e0b\u9762\u5c31\u662f\u4e00\u4e2a\u5e26\u6709\u8ba1\u6570\u5668\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u793a\u4f8b
 1\u3001\u5f15\u5165\u4f9d\u8d56\uff1a<\/p>\n\n\n    
\n\n     \n      \n       com.baqend\n      \n      \n       bloom-filter\n      \n      \n       1.0.7\n      \n     <\/pre>\n
2\u3001\u65b0\u5efa\u4e00\u4e2a\u5e26\u6709\u8ba1\u6570\u5668\u7684\u5e03\u9686\u8fc7\u6ee4\u5668demo\uff1a<\/p>\n
\npackage com.lonelyWolf.redis.bloom;\n\nimport orestes.bloomfilter.FilterBuilder;\n\npublic class CountingBloomFilter {\n    public static void main(String[] args) {\n        orestes.bloomfilter.CountingBloomFilter\n     \n       cbf = new FilterBuilder(10000,\n                0.01).countingBits(8).buildCountingBloomFilter();\n\n        cbf.add(\"zhangsan\");\n        cbf.add(\"lisi\");\n        cbf.add(\"wangwu\");\n        System.out.println(\"\u662f\u5426\u5b58\u5728\u738b\u4e94\uff1a\" + cbf.contains(\"wangwu\")); \/\/true\n        cbf.remove(\"wangwu\");\n        System.out.println(\"\u662f\u5426\u5b58\u5728\u738b\u4e94\uff1a\" + cbf.contains(\"wangwu\")); \/\/false\n    }\n}\n\n     <\/pre>\n
\u6784\u5efa\u5e03\u9686\u8fc7\u6ee4\u5668\u524d\u97622\u4e2a\u53c2\u6570\u4e00\u4e2a\u5c31\u662f\u671f\u671b\u7684\u5143\u7d20\u6570\uff0c\u4e00\u4e2a\u5c31\u662ffpp\u503c\uff0c\u540e\u9762\u7684countingBits<\/code>\u53c2\u6570\u5c31\u662f\u8ba1\u6570\u5668\u5360\u7528\u7684\u5927\u5c0f\uff0c\u8fd9\u91cc\u4f20\u4e86\u4e00\u4e2a8\u4f4d\uff0c\u5373\u6700\u591a\u5141\u8bb8255\u6b21\u91cd\u590d\uff0c\u5982\u679c\u4e0d\u4f20\u7684\u8bdd\u8fd9\u91cc\u9ed8\u8ba4\u662f16\u4f4d\u5927\u5c0f\uff0c\u5373\u5141\u8bb865535\u6b21\u91cd\u590d\u3002<\/strong><\/p>\n
\u603b\u7ed3<\/h2>\n
\u672c\u6587\u4e3b\u8981\u8bb2\u8ff0\u4e86\u4f7f\u7528Redis\u5b58\u5728\u7684\u4e09\u79cd\u95ee\u9898\uff1a\u7f13\u5b58\u96ea\u5d29<\/strong>\uff0c\u7f13\u5b58\u51fb\u7a7f<\/strong>\u548c\u7f13\u5b58\u7a7f\u900f<\/strong>\u3002\u5e76\u5206\u522b\u5bf9\u6bcf\u79cd\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\u8fdb\u884c\u4e86\u63cf\u8ff0\uff0c\u6700\u540e\u7740\u91cd\u4ecb\u7ecd\u4e86\u7f13\u5b58\u7a7f\u900f\u7684\u89e3\u51b3\u65b9\u6848\uff1a\u5e03\u9686\u8fc7\u6ee4\u5668\u3002\u539f\u751f\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u4e0d\u652f\u6301\u5220\u9664\uff0c\u4f46\u662f\u53ef\u4ee5\u5f15\u5165\u4e00\u4e2a\u8ba1\u6570\u5668\u5b9e\u73b0\u5e26\u6709\u8ba1\u6570\u5668\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u6765\u5b9e\u73b0\u5220\u9664\u529f\u80fd\uff0c\u540c\u65f6\u5728\u6700\u540e\u4e5f\u63d0\u5230\u4e86\uff0c\u5e26\u6709\u8ba1\u6570\u5668\u7684\u5e03\u9686\u8fc7\u6ee4\u5668\u4f1a\u5360\u7528\u66f4\u591a\u7684\u7a7a\u95f4\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Redis\u4f7f\u7528\u5143\u7d20\u5220\u9664\u7684\u5e03\u9686\u8fc7\u6ee4...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201217","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201217"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201217\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}