{"id":6687,"date":"2025-01-14T17:16:22","date_gmt":"2025-01-14T09:16:22","guid":{"rendered":"https:\/\/t.n-years.com\/?p=6687"},"modified":"2025-01-14T17:16:22","modified_gmt":"2025-01-14T09:16:22","slug":"%e5%b8%83%e9%9a%86%e8%bf%87%e6%bb%a4%e5%99%a8%e5%8f%8a%e5%ba%94%e7%94%a8%e5%9c%ba%e6%99%af","status":"publish","type":"post","link":"https:\/\/t.n-years.com\/?p=6687","title":{"rendered":"\u5e03\u9686\u8fc7\u6ee4\u5668\u53ca\u5e94\u7528\u573a\u666f"},"content":{"rendered":"<h3>\u5e03\u9686\u8fc7\u6ee4\u5668\u79d1\u666e<\/h3>\n<h4>1. \u4ec0\u4e48\u662f\u5e03\u9686\u8fc7\u6ee4\u5668\uff1f<\/h4>\n<p>\u5e03\u9686\u8fc7\u6ee4\u5668\uff08Bloom Filter\uff09\u662f\u4e00\u79cd\u7a7a\u95f4\u6548\u7387\u9ad8\u7684\u6982\u7387\u578b\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5224\u65ad\u4e00\u4e2a\u5143\u7d20\u662f\u5426\u5c5e\u4e8e\u67d0\u4e2a\u96c6\u5408\u3002\u5b83\u7531 Burton Howard Bloom \u5728 1970 \u5e74\u63d0\u51fa\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u7a7a\u95f4\u6548\u7387\u9ad8<\/strong>\uff1a\u76f8\u6bd4\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff0c\u5e03\u9686\u8fc7\u6ee4\u5668\u5360\u7528\u7684\u5185\u5b58\u8f83\u5c11\u3002<\/li>\n<li><strong>\u6982\u7387\u578b<\/strong>\uff1a\u5b83\u53ef\u80fd\u4ea7\u751f\u8bef\u5224\uff08\u5373\u5224\u65ad\u5143\u7d20\u5b58\u5728\u65f6\uff0c\u5b9e\u9645\u4e0a\u4e0d\u5b58\u5728\uff09\uff0c\u4f46\u4e0d\u4f1a\u6f0f\u5224\uff08\u5373\u5224\u65ad\u5143\u7d20\u4e0d\u5b58\u5728\u65f6\uff0c\u4e00\u5b9a\u4e0d\u5b58\u5728\uff09\u3002<\/li>\n<li><strong>\u5feb\u901f\u67e5\u8be2<\/strong>\uff1a\u67e5\u8be2\u65f6\u95f4\u4e0e\u96c6\u5408\u5927\u5c0f\u65e0\u5173\uff0c\u901a\u5e38\u4e3a\u5e38\u6570\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<h4>2. \u5de5\u4f5c\u539f\u7406<\/h4>\n<p>\u5e03\u9686\u8fc7\u6ee4\u5668\u7531\u4e00\u4e2a\u957f\u5ea6\u4e3a ( m ) \u7684\u4f4d\u6570\u7ec4\u548c ( k ) \u4e2a\u72ec\u7acb\u7684\u54c8\u5e0c\u51fd\u6570\u7ec4\u6210\u3002<\/p>\n<ul>\n<li><strong>\u521d\u59cb\u5316<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a ( m ) \u7684\u4f4d\u6570\u7ec4\uff0c\u6240\u6709\u4f4d\u521d\u59cb\u5316\u4e3a 0\u3002<\/li>\n<li><strong>\u6dfb\u52a0\u5143\u7d20<\/strong>\uff1a\u5c06\u5143\u7d20\u901a\u8fc7 ( k ) \u4e2a\u54c8\u5e0c\u51fd\u6570\u6620\u5c04\u5230\u4f4d\u6570\u7ec4\u7684 ( k ) \u4e2a\u4f4d\u7f6e\uff0c\u5e76\u5c06\u8fd9\u4e9b\u4f4d\u7f6e\u7f6e\u4e3a 1\u3002<\/li>\n<li><strong>\u67e5\u8be2\u5143\u7d20<\/strong>\uff1a\u901a\u8fc7\u76f8\u540c\u7684 ( k ) \u4e2a\u54c8\u5e0c\u51fd\u6570\u8ba1\u7b97\u5143\u7d20\u7684\u4f4d\u7f6e\uff0c\u82e5\u6240\u6709\u4f4d\u7f6e\u90fd\u4e3a 1\uff0c\u5219\u8ba4\u4e3a\u5143\u7d20\u53ef\u80fd\u5b58\u5728\uff1b\u5426\u5219\uff0c\u5143\u7d20\u4e00\u5b9a\u4e0d\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h4>3. \u4f18\u7f3a\u70b9<\/h4>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\n<ul>\n<li>\u7a7a\u95f4\u6548\u7387\u9ad8\uff0c\u9002\u5408\u5927\u89c4\u6a21\u6570\u636e\u3002<\/li>\n<li>\u67e5\u8be2\u901f\u5ea6\u5feb\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a ( O(k) )\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\n<ul>\n<li>\u5b58\u5728\u8bef\u5224\u7387\uff0c\u65e0\u6cd5\u5220\u9664\u5143\u7d20\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u5e94\u7528\u573a\u666f<\/h3>\n<h4>1. \u7f13\u5b58\u7cfb\u7edf<\/h4>\n<ul>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u9632\u6b62\u7f13\u5b58\u7a7f\u900f\uff0c\u5373\u67e5\u8be2\u4e0d\u5b58\u5728\u7684\u6570\u636e\u65f6\uff0c\u907f\u514d\u76f4\u63a5\u8bbf\u95ee\u6570\u636e\u5e93\u3002<\/li>\n<li><strong>\u5b9e\u73b0<\/strong>\uff1a\u5728\u7f13\u5b58\u524d\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u82e5\u8fc7\u6ee4\u5668\u5224\u65ad\u6570\u636e\u4e0d\u5b58\u5728\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u51cf\u5c11\u6570\u636e\u5e93\u538b\u529b\u3002<\/li>\n<\/ul>\n<h4>2. \u7f51\u7edc\u722c\u866b<\/h4>\n<ul>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u907f\u514d\u91cd\u590d\u6293\u53d6\u540c\u4e00 URL\u3002<\/li>\n<li><strong>\u5b9e\u73b0<\/strong>\uff1a\u5c06\u5df2\u6293\u53d6\u7684 URL \u5b58\u5165\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u6293\u53d6\u65b0 URL \u65f6\u5148\u68c0\u67e5\u662f\u5426\u5df2\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h4>3. \u5206\u5e03\u5f0f\u7cfb\u7edf<\/h4>\n<ul>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u5feb\u901f\u5224\u65ad\u6570\u636e\u662f\u5426\u5728\u5206\u5e03\u5f0f\u5b58\u50a8\u4e2d\u3002<\/li>\n<li><strong>\u5b9e\u73b0<\/strong>\uff1a\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u51cf\u5c11\u8de8\u8282\u70b9\u67e5\u8be2\u3002<\/li>\n<\/ul>\n<h4>4. \u5783\u573e\u90ae\u4ef6\u8fc7\u6ee4<\/h4>\n<ul>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u5feb\u901f\u5224\u65ad\u90ae\u4ef6\u5730\u5740\u662f\u5426\u4e3a\u5783\u573e\u90ae\u4ef6\u53d1\u9001\u8005\u3002<\/li>\n<li><strong>\u5b9e\u73b0<\/strong>\uff1a\u5c06\u5df2\u77e5\u5783\u573e\u90ae\u4ef6\u5730\u5740\u5b58\u5165\u5e03\u9686\u8fc7\u6ee4\u5668\uff0c\u65b0\u90ae\u4ef6\u5230\u8fbe\u65f6\u8fdb\u884c\u8fc7\u6ee4\u3002<\/li>\n<\/ul>\n<h4>5. \u6570\u636e\u5e93\u7cfb\u7edf<\/h4>\n<ul>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u52a0\u901f\u67e5\u8be2\uff0c\u51cf\u5c11\u78c1\u76d8 I\/O\u3002<\/li>\n<li><strong>\u5b9e\u73b0<\/strong>\uff1a\u5728\u67e5\u8be2\u524d\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\u5224\u65ad\u6570\u636e\u662f\u5426\u5b58\u5728\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u78c1\u76d8\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u5e03\u9686\u8fc7\u6ee4\u5668\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u6570\u636e\u7ed3\u6784\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5feb\u901f\u5224\u65ad\u5143\u7d20\u662f\u5426\u5b58\u5728\u7684\u573a\u666f\u3002\u5c3d\u7ba1\u5b58\u5728\u8bef\u5224\u7387\uff0c\u4f46\u5728\u8bb8\u591a\u5e94\u7528\u4e2d\uff0c\u5176\u7a7a\u95f4\u548c\u65f6\u95f4\u6548\u7387\u7684\u4f18\u52bf\u4f7f\u5176\u6210\u4e3a\u7406\u60f3\u9009\u62e9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5e03\u9686\u8fc7\u6ee4\u5668\u79d1\u666e 1. \u4ec0\u4e48\u662f\u5e03\u9686\u8fc7\u6ee4\u5668\uff1f \u5e03\u9686\u8fc7\u6ee4\u5668\uff08Bloom 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