{"id":10005994,"date":"2022-07-22T11:59:01","date_gmt":"2022-07-22T03:59:01","guid":{"rendered":"https:\/\/ityet.com\/?p=10005994"},"modified":"2022-07-22T11:59:01","modified_gmt":"2022-07-22T03:59:01","slug":"%e6%af%94bloom-filter%e8%8a%82%e7%9c%8125%e7%a9%ba%e9%97%b4%ef%bc%81ribbon-filter%e5%9c%a8lindorm%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10005994","title":{"rendered":"\u6bd4Bloom Filter\u8282\u770125%\u7a7a\u95f4\uff01Ribbon Filter\u5728Lindorm\u4e2d\u7684\u5e94\u7528"},"content":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u672c\u6587\u7814\u7a76\u4e86\u4e00\u79cd\u65b0\u7684\u8fc7\u6ee4\u5668Ribbon Filter\uff0c\u5e76\u5c06\u5176\u96c6\u6210\u5230Lindorm\u4e2d\u4f5c\u8005\uff1a\u7bab\u82cf \u671d\u6208 \u6b63\u7814\u00a01 \u524d\u8a00Lindorm\u662f\u4e00\u4e2a\u4f4e\u6210\u672c\u9ad8\u541e\u5410\u7684\u591a\u6a21\u6570\u636e\u5e93\uff0c\u76ee\u524d\uff0cLindorm\u662f\u963f\u91cc\u5185\u90e8\u6570\u636e\u4f53\u91cf\u6700\u5927\uff0c\u8986\u76d6\u4e1a\u52a1\u6700\u5e7f\u7684\u6570\u636e\u5e93\u4ea7\u54c1\u3002\u8d85\u9ad8\u7684\u6027\u80fd\u548c\u4f4eRT\u4e00\u76f4\u662fLindorm\u8ffd\u6c42\u7684\u76ee\u6807\uff0c\u56e0\u6b64Lindorm\u4e5f\u5728\u4e0d\u65ad\u5730\u4f18\u5316\u548c\u8fed\u4ee3\uff0c\u4e89\u53d6\u5728\u6bcf\u4e2a\u5c0f\u70b9\u4e0a\u90fd\u505a\u5230\u6781\u81f4\u3002\u8fd9\u6b21\uff0c\u6211\u4eec\u7684\u4f18\u5316\u7684\u76ee\u6807\u653e\u5230\u4e86Lindorm\u4e2d\u7684Bloom Filter\u4e0a\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195278\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u7531\u4e8eBloom Filter\u53ea\u9700\u8981\u5360\u7528\u6781\u5c0f\u7684\u7a7a\u95f4\uff0c\u4fbf\u53ef\u4ee5\u7ed9\u51fa\u201d\u53ef\u80fd\u5b58\u5728\u201c\u548c\u201d\u80af\u5b9a\u4e0d\u5b58\u5728\u201c\u7684\u5b58\u5728\u6027\u5224\u65ad\uff0c\u56e0\u6b64\u53ef\u4ee5\u63d0\u524d\u8fc7\u6ee4\u6389\u8bb8\u591a\u4e0d\u5fc5\u8981\u7684\u6570\u636e\u5757\uff0c\u4ece\u800c\u8282\u7701\u4e86\u5927\u91cf\u7684\u78c1\u76d8IO\u3002\u5728Lindorm\u4e2dGet\u64cd\u4f5c\u5c31\u662f\u901a\u8fc7\u8fd0\u7528\u4f4e\u6210\u672c\u9ad8\u6548\u7387\u7684Bloom Filter\u6765\u8fc7\u6ee4\u6389\u5927\u91cf\u65e0\u6548\u7684\u6570\u636e\u5757\u7684\uff0c\u4ece\u800c\u5927\u5e45\u5ea6\u964d\u4f4e\u78c1\u76d8IO\u6b21\u6570\u3002Bloom Filter\u5b58\u50a8\u5728\u4e86Lindorm\u7684\u5e95\u5c42\u6587\u4ef6LDFile\u4e2d\u3002\u5728\u957f\u671f\u7684\u751f\u4ea7\u89c2\u5bdf\u4e2d\uff0c\u6211\u4eec\u53d1\u73b0\uff0cBloom Filter\u7684\u7a7a\u95f4\u5360\u7528\u8fdc\u5927\u4e8e\u5176\u4ed6meta\u6570\u636e\u3002\u5728\u9ed8\u8ba4\u914d\u7f6e\u7684\u9519\u8bef\u7387\u4e0b\uff0c\u57fa\u672c\u4e0a100MB\u6570\u636e\uff08\u538b\u7f29\u540e\uff09\uff0c\u5c31\u4f1a\u4ea7\u751f1MB\u4ee5\u4e0a\u7684BloomFilter\uff0c\u4e5f\u5c31\u662fBloomFilter\u4f1a\u5360\u63891%\u7684\u5b58\u50a8\u7a7a\u95f4\u3002\u5bf9\u4e8e\u78c1\u76d8\u5b58\u50a8\u7a7a\u95f4\u6765\u8bf4\uff0c1%\u7684\u6d88\u8017\u5e76\u4e0d\u591a\uff0c\u4f46\u662f\uff0c\u7531\u4e8eBloomFilter\u505a\u4e3aLindorm\u8bfb\u94fe\u8def\u4e0a\u7684\u5173\u952e\u94fe\u8def\uff0c\u901a\u5e38\u9700\u8981\u7f13\u5b58\u5728\u5185\u5b58\u4e2d\u624d\u80fd\u83b7\u5f97\u66f4\u597d\u5730\u6027\u80fd\u3002\u5185\u5b58\u8d44\u6e90\u5bf9Lindorm\u6765\u8bf4\u662f\u975e\u5e38\u5b9d\u8d35\u7684\u8d44\u6e90\uff0c\u5bf9\u4e8e\u5355\u673a\u7ba1\u7406\u4e0aTB\u6570\u636e\u7684Lindorm\u8282\u70b9\u6765\u8bf4\uff0c\u901a\u5e38\u53ea\u6709\u51e0GB\u5230\u51e0\u5341GB\u7684\u5185\u5b58\u6765\u505a\u7f13\u5b58\u3002\u6309\u7167\u901a\u5e38\u7684\u89c4\u5f8b\uff0c\u4e0aTB\u7684\u6570\u636e\u4f1a\u4ea7\u751f\u51e0\u5341GB\u7684Bloom Filter\uff0c\u8fd9\u4e9bBloom Filter\u4f1a\u628a\u7f13\u5b58\u5360\u6ee1\uff0c\u5bfc\u81f4\u6570\u636e\u65e0\u6cd5\u8fdb\u5165\u7f13\u5b58\uff0c\u4f1a\u4e25\u91cd\u5f71\u54cd\u7528\u6237\u8bf7\u6c42\u7684\u5185\u5b58\u547d\u4e2d\u7387\u3002\u56e0\u6b64\uff0c\u4f18\u5316Bloom Filter\u7684\u5927\u5c0f\uff0c\u610f\u5473\u7740\u53ef\u4ee5\u51cf\u5c11\u5185\u5b58\u5360\u7528\uff0c\u8ba9\u7f13\u5b58\u80fd\u591f\u52a0\u8f7d\u66f4\u591a\u7528\u6237\u6570\u636e\uff0c\u4ece\u800c\u4f18\u5316Lindorm\u7684\u8bfb\u6027\u80fd\u3002\u4e3a\u4e86\u4f18\u5316BloomFilter, Lindorm\u4e5f\u505a\u4e86\u4e0d\u5c11\u5c1d\u8bd5\uff0c\u6bd4\u5982\u5f15\u5165SuRF\uff0c\u4f46\u6211\u4eec\u53d1\u73b0\uff0c\u5728\u7a7a\u95f4\u5360\u7528\u7387\u4e0a\uff0cSuRF\u5e76\u4e0d\u6bd4BloomFilter\u6709\u4f18\u52bf\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u628a\u76ee\u5149\u8f6c\u5411\u4e862021\u5e74\u7684\u4e00\u7bc7\u8bba\u6587\u300aRibbon filter: practically smaller than Bloom and Xor\u300b\u3002\u8fd9\u7bc7\u8bba\u6587\u63d0\u51fa\u4e86\u4e00\u79cd\u65b0\u7684Ribbon Filter\uff0c\u636e\u8bba\u6587\u7684\u7ed3\u8bba\uff0cRibbon Filter\u76f8\u5bf9Bloom Filter\u53ef\u4ee5\u8282\u770130%\u7684\u7a7a\u95f4\u3002\u8fd9\u4e2a\u5bf9\u6211\u4eec\u6765\u8bf4\u662f\u4e00\u4e2a\u975e\u5e38\u8bf1\u4eba\u7684\u7ed3\u8bba\uff0c\u8282\u770130%\u7a7a\u95f4\u610f\u5473\u7740\u53ef\u4ee5\u91ca\u653e30%\u7684\u7f13\u5b58\u7a7a\u95f4\uff0c\u8bfb\u8bf7\u6c42\u7684\u5185\u5b58\u547d\u4e2d\u7387\u4f1a\u6709\u5f88\u5927\u4e00\u90e8\u5206\u63d0\u5347\u3002Ribbon Filter\u771f\u7684\u6709\u8bba\u6587\u4e2d\u8bf4\u7684\u90a3\u4e48\u795e\u5947\u5417\uff1f\u5e26\u6765\u7a7a\u95f4\u8282\u7701\u7684\u540c\u65f6\uff0c\u4f1a\u5e26\u6765\u526f\u4f5c\u7528\u5417\uff1f\u672c\u6587\u5c06\u8fd9\u4e00\u5168\u65b0\u7684Ribbon Filter\u7ed9\u5927\u5bb6\u505a\u4e00\u4e2a\u4ecb\u7ecd\uff0c\u7136\u540e\u6211\u4eec\u628aRibbon Filter\u5f15\u5165\u4e86Lindorm\u4e2d\uff0c\u5e76\u6d4b\u8bd5\u4e86Ribbon Filter\u5728\u5b9e\u9645\u751f\u4ea7\u4e2d\u7684\u771f\u5b9e\u8868\u73b0\u30022 \u57fa\u672c\u539f\u74062.1 Bloom FilterBloom Filter\u662fBloom\u57281970\u5e74\u63d0\u51fa\u7684\u4e00\u79cd\u6982\u7387\u6570\u636e\u7ed3\u6784[1]\uff0c\u7528\u6765\u5feb\u901f\u6d4b\u8bd5\u5143\u7d20\u662f\u5426\u662f\u96c6\u5408\u7684\u6210\u5458\uff0c\u5b58\u5728\u4e00\u5b9a\u7684\u5047\u9633\u6027\u7387\uff08\u4e00\u822c\u8bbe\u7f6e\u4e3a0.01\uff09\uff0c\u4e0d\u53ef\u80fd\u6709\u5047\u9634\u6027\u7387\uff0c\u5373\u67e5\u8be2\u8fd4\u56de\u201c\u53ef\u80fd\u5b58\u5728\u201d\u6216\u8005\u201c\u4e00\u5b9a\u4e0d\u5b58\u5728\u201d\u3002\u53ef\u4ee5\u6dfb\u52a0\u5143\u7d20\u5230\u96c6\u5408\u4e2d\uff0c\u4f46\u4e0d\u80fd\u5220\u9664\uff08\u6709\u6539\u8fdb\u7248\u672c\u53ef\u4ee5\u5b9e\u73b0\uff09\uff0c\u6dfb\u52a0\u7684\u5143\u7d20\u8d8a\u591a\uff0c\u5047\u9633\u6027\u7387\u8d8a\u5927\u3002\u5bf9\u4e8e\u7ed9\u5b9a\u7684\u5047\u9633\u6027\u7387e\u548c\u5143\u7d20\u6570\u91cfn\uff0cBloom Filter\u6709\u4e00\u4e2a\u6700\u4f73\u7684\u7a7a\u95f4\u5927\u5c0f\uff0c\u4f7f\u5f97\u6dfb\u52a0\u5143\u7d20\u8fc7\u7a0b\u4e2d\uff0c\u4fdd\u8bc1\u9010\u6e10\u53d8\u5927\u7684\u5047\u9633\u6027\u7387\u5c0f\u4e8e\u7b49\u4e8ee\u3002Bloom Filter\u7531\u4e00\u4e2a\u957f\u5ea6\u4e3an\u768401\u6570\u7ec4array\u7ec4\u6210\u3002\u9996\u5148\u4f1a\u5c06array\u6570\u7ec4\u6bcf\u4e2a\u5143\u7d20\u521d\u59cb\u5316\u8bbe\u4e3a0\uff0c\u5bf9\u4e8e\u96c6\u5408A\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20w\uff0c\u505ak\u6b21\u54c8\u5e0c\uff0c\u6bcf\u6b21\u54c8\u5e0c\u503c\u90fd\u4f1a\u5bf9n\u53d6\u6a21\u5f97\u5230\u4e00\u4e2a\u7d22\u5f15\uff0c\u6bd4\u5982\u7b2ci\u6b21\u54c8\u5e0c\uff0c\u7d22\u5f15<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195279\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c\u5c06array\u6570\u7ec4\u4e2d\u7684\u5bf9\u5e94\u4f4d\u7f6e\u7f6e\u4e3a1\uff0c\u6700\u7ec8array\u53d8\u6210\u4e86\u4e00\u4e2a\u90e8\u5206\u5143\u7d20\u4e3a1\u7684\u6570\u7ec4\u3002\u5bf9\u4e8e\u5f85\u68c0\u6d4b\u5143\u7d20w\u540c\u6837\u4f1a\u505ak\u6b21\u54c8\u5e0c\u5f97\u5230k\u4e2a\u7d22\u5f15\uff0c\u5982\u679c\u6570\u7ec4\u4e2d\u5bf9\u5e94\u4f4d\u7f6e\u90fd\u4e3a1\u5219\u5143\u7d20w\u53ef\u80fd\u5b58\u5728\u96c6\u5408A\u4e2d\uff0c\u5426\u8005\u4e00\u5b9a\u4e0d\u5b58\u5728\u30022.2 Xor FilterRibbon Filter\u662f\u57fa\u4e8eXor Filter\u505a\u7684\uff0c\u5728\u4ecb\u7ecdRibbon Filter\u4e4b\u524d\uff0c\u5f97\u5148\u4e86\u89e3Xor Filter\u3002Xor Filter\u662fThomas Mueller Graf\u548cDaniel Lemire\u57282020\u5e74\u63d0\u51fa\u7684[2]\uff0c\u4e5f\u662f\u7528\u6765\u68c0\u6d4b\u4e00\u4e2a\u5143\u7d20\u662f\u4e0d\u662f\u96c6\u5408\u4e2d\u7684\u4e00\u4e2a\u6210\u5458\uff0c\u76f8\u6bd4Bloom Filter\uff0cXor Filter\u6838\u5fc3\u5dee\u5f02\u4e3b\u8981\u662f\u5982\u4e0b\uff1aXor Filter\u6709\u56fa\u5b9a\u7684\u4e09\u4e2a\u54c8\u5e0c\u51fd\u6570\uff0c\u800cBloom Filter\u54c8\u5e0c\u51fd\u6570\u7531\u5047\u9633\u6027\u7387\u786e\u5b9a\uff1bXor Filter\u91c7\u7528XOR\u65b9\u5f0f\u6309slot\u5339\u914d\uff0cBloom Filter\u4f7f\u7528AND\u65b9\u5f0f\u8fdb\u884c\u6309\u4f4d\u5339\u914d\uff1bXor Filter\u7531\u4e00\u4e2a\u4e8c\u7ef4bit\u6570\u7ec4\u7ec4\u6210\uff0cBloom Filter\u662f\u4e00\u4e2a\u4e00\u7ef4bit\u6570\u7ec4\uff1bXor Filter\u76f8\u6bd4Bloom Filter\u6700\u9ad8\u80fd\u8282\u770120%\u7684\u7a7a\u95f4\u3002\u00a0\u8f93\u5165\u7684\u5143\u7d20\u7ecf\u8fc7\u591a\u4e2a\u54c8\u5e0c\u51fd\u6570\u751f\u6210\u7684\u54c8\u5e0c\u503c\u4e0d\u4f1a\u50cfBloom Filter\u4e00\u6837\u6620\u5c04\u5230\u4e00\u4e2abit\u4f4d\uff0c\u800c\u662f\u6620\u5c04\u5230\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684slot\uff0c\u4e00\u4e2aslot\u6709\u591a\u4e2abit\u4f4d\uff0c\u4e14\u6bcf\u4e2aslot\u7684bit\u4f4d\u6570\u76f8\u540c\u3002\u5bf9\u4e8e\u5f85\u68c0\u6d4b\u5143\u7d20w\uff0c\u4f1a\u7ecf\u8fc7k\u4e2a\u54c8\u5e0c\u51fd\u6570\u751f\u6210k\u4e2a\u54c8\u5e0c\u503c\u5206\u522b\u6620\u5c04\u5230\u5bf9\u5e94slot\u4e0a\uff0c\u7136\u540e\u5bf9\u6240\u6709\u7684k\u4e2aslot\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u5f02\u6216\u8fd0\u7b97\u5f97\u5230\u7ed3\u679cr\uff0c\u5143\u7d20w\u8fd8\u4f1a\u7ecf\u8fc7\u53e6\u5916\u4e00\u4e2a\u72ec\u7acb\u7684\u54c8\u5e0c\u51fd\u6570\u751f\u6210\u6307\u7eb9fingerprint(w)\uff0c\u548cr\u4f5c\u5bf9\u6bd4\uff0c\u5982\u679c\u76f8\u540c\u5219\u5143\u7d20w\u53ef\u80fd\u5b58\u5728\u96c6\u5408A\u4e2d\uff0c\u5426\u8005\u4e00\u5b9a\u4e0d\u5b58\u5728\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195280\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u63a5\u4e0b\u6765\u4ecb\u7ecdXor Filter\u7684\u6784\u9020\u539f\u7406\u5f00\u59cb\u5148\u4ecb\u7ecd\u51e0\u4e2a\u5173\u952e\u53d8\u91cf\uff1aB\u5b58\u653e\u7740\u7684r-bit\u7684Xor Filtern\u662f\u53c2\u4e0e\u6784\u5efaXor Filter\u7684\u96c6\u5408A\u5143\u7d20\u6570\u91cfk\u662f\u54c8\u5e0c\u51fd\u6570\u7684\u4e2a\u6570\uff08\u56fa\u5b9a\u503c3\uff09m\u662fslot\u7684\u4e2a\u6570\u00a0\u521d\u59cb\u65f6\u4ee4r=5\uff0cn=3\uff0ck=3\uff0cm=9\uff0cB\u6240\u6709\u5143\u7d20\u4e3a0\uff0c\u5143\u7d20x\uff0cy\uff0cz\u5206\u522b\u7ecf\u8fc73\u4e2a\u54c8\u5e0c\u51fd\u6570\u6620\u5c04\u52303\u4e2aslot\u4e0a\uff0c\u6bcf\u4e00\u4e2a\u5143\u7d20\u7ecf\u8fc7\u4e00\u4e2a\u72ec\u7acb\u7684\u54c8\u5e0c\u51fd\u6570\u751f\u6210\u6307\u7eb9f(x)=11010\uff0cf(y)=10000\uff0cf(z)=01110\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195281\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u6211\u4eec\u53ef\u4ee5\u770b\u5230slot7\u88ab\u5143\u7d20z\u72ec\u4eab\uff0c\u6240\u4ee5slot7\u80fd\u591f\u552f\u4e00\u6807\u8bc6z\uff0c\u5c06slot7\u6253\u4e0a\u6807\u8bb0z\uff0c\u5e76\u53bb\u9664\u5143\u7d20z\u7684\u6620\u5c04<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195282\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u6b64\u65f6slot5\u53ef\u4ee5\u552f\u4e00\u6807\u8bc6\u5143\u7d20y\uff0c\u5c06slot5\u6253\u4e0a\u6807\u8bb0y\uff0c\u5e76\u53bb\u9664\u5143\u7d20y\u7684\u6620\u5c04<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195283\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u73b0\u5728\u53ea\u5269\u4e0b\u6700\u540e\u4e00\u4e2a\u5143\u7d20x\uff0cf(x)\u53ef\u4ee5\u653e\u5728slot1\u3001slot3\u3001slot6\u4efb\u4e00\u4f4d\u7f6e\uff0c\u8fd9\u91cc\u9009\u62e9slot1\uff0cslot3\u548cslot6\u7f6e\u4e3a\u76845-bit 0\uff0c\u5c06f(x) xor slot2 xor slot3\u7684\u7ed3\u679c\u653e\u5728slot1\u4e2d\uff0c11010^00000^00000=11010\uff0c\u5e76\u56de\u586b\u5176\u5b83\u5e26\u6709\u6807\u8bb0\u7684slot\uff0c\u548c\u524d\u9762\u64cd\u4f5c\u4e00\u6837y\u5143\u7d20slot5=f(y) xor slot1 xor slot6=10000^11010^00000=01010\uff0cz\u5143\u7d20slot7=f(z) xor slot2 xor slot5=01110^00000^01010=00100<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195284\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u6700\u7ec8\u5f97\u5230\u4e86\u6784\u5efa\u597d\u7684Xor Filter\uff0c\u6d4b\u8bd5\u7684\u65f6\u5019\uff0c\u5f85\u68c0\u6d4b\u7684\u5143\u7d20w\u7ecf\u8fc73\u4e2a\u54c8\u5e0c\u51fd\u6570\u5f97\u5230\u5bf9\u5e94\u7684slot\u7d22\u5f15h1(w)\uff0ch2(w)\uff0ch3(w)\uff0c\u4ee5\u53ca\u7ecf\u8fc7\u53e6\u4e00\u4e2a\u54c8\u5e0c\u51fd\u6570\u5f97\u5230\u6307\u7eb9f(w)\uff0c\u5c06\u6307\u7eb9\u4e0eB(h1(w)) xor B(h2(w)) xor B(h3(w))\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u82e5\u76f8\u7b49\uff0c\u5219\u8868\u793a\u5143\u7d20w\u53ef\u80fd\u5b58\u5728\uff0c\u5426\u8005\u4e00\u5b9a\u4e0d\u5b58\u5728\u30022.3 Ribbon FilterRibbon Filter\u662fPeter C. Dillinger\u548cStefan Walzer\u57282021\u5e74\u63d0\u51fa\u7684[3]\uff0cRibbon Filter\u4e3b\u4f53\u662fXor Filter\u7684\u5b9e\u73b0\uff0c\u5728\u5176\u57fa\u7840\u4e0a\u6784\u5efa\u53ef\u4ee5\u9ad8\u6548\u8fd0\u7b97\u7684\u77e9\u9635\uff0c\u4ece\u800c\u5229\u7528\u77e9\u9635\u672c\u8eab\u7684\u9ad8\u6548\u8fd0\u7b97\u6765\u89e3\u51b3Xor Filter\u6784\u5efa\u8fc7\u7a0b\u4e2d\u7684\u91cd\u590d\u64cd\u4f5c\uff0c\u76f8\u6bd4Bloom Filter\uff0cRibbon Filter\u4f1a\u6d88\u8017\u66f4\u591a\u7684CPU\uff0cRibbon Filter\u7684\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\u8282\u7701\u7a7a\u95f4\uff0c\u6240\u4ee5\u4f1a\u9488\u5bf9Xor Filter\u7684\u4e8c\u7ef4\u6570\u7ec4\u7684\u6c42\u89e3\u8fc7\u7a0b\u505a\u8ba1\u7b97\u4f18\u5316\uff0cRibbon Filter\u4f1a\u5c06\u4e8c\u7ef4\u6570\u7ec4\u7684\u6c42\u89e3\u8fc7\u7a0b\u8f6c\u5316\u6210\u89e3\u7ebf\u6027\u65b9\u7a0b\u7ec4Ax=b\uff0c\u5e76\u5e94\u7528\u4e86\u57fa\u4e8e\u884c\u5217\u5f0f\u7684\u9ad8\u65af\u6d88\u5143\u6cd5\uff0c\u7ebf\u6027\u4ee3\u6570\u4e2d\u6c42\u89e3\u7ebf\u7a0b\u65b9\u7a0b\u7ec4\u65f6\u4f1a\u7528\u5230\u884c\u5217\u5f0f\u8fd0\u7b97\uff0c\u9ad8\u65af\u6d88\u5143\u6cd5\u5c31\u662f\u5728\u6c42\u89e3\u7ebf\u7a0b\u65b9\u7a0b\u7ec4\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5c06\u4e00\u4e2a\u884c\u5217\u5f0f\u8f6c\u5316\u6210\u4e0a\u4e09\u89d2\u6216\u8005\u4e0b\u4e09\u89d2\u77e9\u9635\u3002\u00a0\u76f8\u6bd4Xor Filter\uff0c Ribbon Filter\u4e3b\u8981\u5dee\u5f02\u5982\u4e0b\uff1aRibbon Filter\u54c8\u5e0c\u6620\u5c04\u5230\u6570\u7ec4\u8fde\u7eed\u7684\u4e00\u7247\u7d22\u5f15\uff0c\u800cXor Filter\u4ec5\u6709\u76843\u4e2a\u54c8\u5e0c\u51fd\u6570\u6bcf\u4e2a\u90fd\u968f\u673a\u6620\u5c04\uff1bRibbon Filter\u6784\u5efa\u8fc7\u7a0b\u4f7f\u7528\u9ad8\u65af\u6d88\u5143\u6cd5\uff0cXor Filter\u4f7f\u7528Peeling\u7b97\u6cd5\uff1bRibbon Filter\u4e8c\u7ef4bit\u6570\u7ec4\u4f7f\u7528\u5217\u5f0f\u5b58\u50a8\uff0cXor Filter\u662f\u884c\u5f0f\u5b58\u50a8\uff1bRibbon Filter\u76f8\u6bd4Bloom Filter\u6700\u9ad8\u80fd\u8282\u770130%\u7684\u7a7a\u95f4\u3002\u00a0\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u4e0a\u8282Xor Filter\u7684\u5143\u7d20w\u7684\u67e5\u8be2\u6d4b\u8bd5\u8fc7\u7a0b\uff0c\u54c8\u5e0c\u6620\u5c04\u7528h(x)\u8868\u793a\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195285\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195286\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195287\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c\u5373<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195288\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>= B[2] xor B[4] xor B[7] \uff0c\u90a3\u662f\u4e0d\u662f\u53ef\u4ee5\u8868\u793a\u6210<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195289\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c\u5176\u4e2d<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195290\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u662f\u5143\u7d20w\u54c8\u5e0c\u6620\u5c04\u7684\u7279\u5f81\u5411\u91cf\uff0c\u7b2c2,4,7\u4f4d\u4e3a1\uff08\u7d22\u5f15\u4ece0\u7b97\u8d77\uff09\uff0c\u5bf9\u5e94\u4e86<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195291\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195292\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195293\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u7684\u503c\uff0cZ\u662f\u4e8c\u7ef4bit\u6570\u7ec4B\u7684\u77e9\u9635\u5f62\u5f0f\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195294\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c\u540c\u65f6\u6ce8\u610f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195295\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u8ba1\u7b97\u8fc7\u7a0b\u4e2d\u52a0\u6cd5\u8fd0\u7b97\u8981\u53d8\u6210\u5f02\u6216XOR\u8fd0\u7b97\u3002\u53ef\u4ee5\u8ba1\u7b97\u51faquery(w)=00100\uff0c<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195296\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>=<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195297\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u4e0a\u8282Xor Filter\u7684\u6784\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u7528\u7ebf\u6027\u65b9\u7a0b\u7ec4\u8868\u793a\u6210\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195298\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c\u4e8c\u7ef4bit\u6570\u7ec4B\u53ef\u4ee5\u901a\u8fc7\u6c42\u89e3\u8be5\u65b9\u7a0b\u7ec4\u5f97\u5230\uff0c\u65b9\u7a0b\u7ec4\u7684\u7cfb\u6570\u77e9\u9635\u4e3a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195299\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff0c\u7b2c1\u884c\u5bf9\u5e94\u4e86\u5143\u7d20x\u54c8\u5e0c\u6620\u5c04\u7684\u7279\u5f81\u5411\u91cf\uff0c\u7b2c2\u884cy\uff0c\u7b2c3\u884cz\u3002\u9664\u4e86\u5f15\u5165\u77e9\u9635\u8fd0\u7b97\uff0cRibbon Filter\u8fd8\u5bf9\u4e8c\u7ef4bit\u6570\u7ec4\u7684\u5b58\u50a8\u7ed3\u6784\u8fdb\u884c\u4e86\u8c03\u6574\uff0c\u5728Xor Filter\u4e2d\u6bcf\u4e2aslot\u7684r-bit\u8fde\u7eed\u5b58\u50a8\uff0c\u4e14\u4fdd\u8bc1\u7b2ci\u4e2aslot\u4e2d\u6240\u6709\u7684bit\u90fd\u5728\u7b2ci+1\u4e2aslot\u7684r-bit\u524d\u9762\uff0c\u8fd9\u79cd\u79f0\u4e3a\u884c\u5f0f\u5b58\u50a8\u7ed3\u6784\uff0c\u800cRibbon Filter\u4f7f\u7528\u5217\u5f0f\u5b58\u50a8\uff0c\u4fdd\u8bc1\u6bcfw\u4e2aslot\u7684\u7b2cj\u4e2abit\u90fd\u5728\u7b2cj+1\u4e2abit\u524d\u9762\uff0cw\u662fRibbon Filter\u54c8\u5e0c\u6620\u5c04\u5230\u7684\u8fde\u7eed\u7d22\u5f15\u7684\u5bbd\u5ea6\uff0c\u4e00\u822cw&gt;&gt;r\uff0c\u5982\u679c\u4f7f\u7528\u884c\u5f0f\u5b58\u50a8\uff0c\u67e5\u8be2\u7684\u65f6\u5019\u9700\u8981\u4ece\u5185\u5b58\u8bfb\u53d6\u6240\u6709\u7684w\u4e2ar-bit\uff0c\u7136\u540e\u505a\u5f02\u6216\u8ba1\u7b97\u5f97\u5230\u7ed3\u679c\u5e76\u4e0e\u6307\u7eb9\u5bf9\u6bd4\uff0c\u73b0\u5728\u4f7f\u7528\u5217\u5f0f\u5b58\u50a8\uff0c\u53ef\u4ee5\u5148\u8bfb\u53d6\u7b2c1\u4e2aw-bit\uff0c\u505a\u4e00\u4e0b\u5f02\u6216\u8ba1\u7b97\u5e76\u5c06\u7ed3\u679c\u4e0e\u6307\u7eb9\u7684\u7b2c1\u4e2abit\u6bd4\u8f83\uff0c\u5982\u679c\u4e0d\u540c\u5219\u8868\u793a\u67e5\u8be2\u7684\u5143\u7d20\u4e0d\u5728\u96c6\u5408\u5185\uff0c\u76f4\u63a5\u8fd4\u56deFalse\uff0c\u5426\u8005\u7ee7\u7eed\u8bfb\u53d6\u63a5\u4e0b\u6765\u7684w-bit\u5e76\u91cd\u590d\u4e4b\u524d\u7684\u8fc7\u7a0b\u3002\u5217\u5f0f\u5b58\u50a8\u5e26\u6765\u7684\u597d\u5904\u6709\uff1a\u67e5\u8be2\u8fc7\u7a0b\u4e0d\u7528\u8bfb\u53d6\u6240\u6709\u7684bit\uff0c\u51cf\u5c11\u67e5\u8be2\u65f6\u95f4\uff1b\u5bf9\u7a7a\u95f4\u66f4\u53cb\u597d\uff0c\u8bbf\u95eew\u4e2a\u8fde\u7eed\u5185\u5b58\u7a7a\u95f4\u53d8\u6210\u4e86\u8bbf\u95eer\u4e2a\u8fde\u7eed\u5185\u5b58\u7a7a\u95f4\u3002\u4e00\u822cw=64\uff0cr=7\u3002\u00a02.4 \u6027\u80fd\u5bf9\u6bd4\u4f9d\u636eRibbon Filter\u8bba\u6587\u7684\u6027\u80fd\u5bf9\u6bd4\u7ed3\u8bba\uff0c\u6211\u4eec\u63d0\u53d6\u51fa\u672c\u6587\u5173\u5fc3\u7684Bloom\uff0cXor\uff0cRibbon\u4e09\u8005\u7684\u6027\u80fd\u5bf9\u6bd4\u3002\u8fd9\u91cc\u7684key\u7528\u7684\u662flong\u6570\u636e\u7c7b\u578b\uff0cConstruct\u5305\u62ec\u6dfb\u52a0key\u548c\u6c42\u89e3\u65b9\u7a0b\u3002Filterfalse positive ratespace overheadns\/key\uff0cn=10^6\uff0cConstructns\/key\uff0cn=10^6\uff0cQueryBlockedBloom1%52.0%1114Xor1\/2^8\u22480.39%23.0%14815Ribbon1\/2^7\u22480.78%10.1%8339\u00a0\u00a0\u4ece\u8868\u4e2d\u53ef\u4ee5\u770b\u51fa\uff1aRibbon\u6784\u5efa\u65f6\u95f4\u662fBlockedBloom\u76847.5\u500d\uff1bRibbon\u67e5\u8be2\u65f6\u95f4\u662fBlockedBloom\u76842.8\u500d\uff1bRibbon\u7a7a\u95f4\u5f00\u9500\u662fBlockedBloom\u768472%\uff08(1+10.1%)\/(1+52.0%)\uff09\uff0c\u8282\u7701\u4e8628%\u3002\u00a0\u901a\u8fc7\u6587\u7ae0\u4e2d\u7684\u5bf9\u6bd4\uff0c\u6211\u4eec\u53d1\u73b0Ribbon Filter\u867d\u7136\u6bd4Bloom Filter\u8282\u7701\u4e8628%\u7684\u7a7a\u95f4\uff0c\u4f46\u6784\u5efa\u65f6\u95f4\u548c\u67e5\u8be2\u65f6\u95f4\u90fd\u6709\u4e86\u4e00\u4e9b\u660e\u663e\u7684\u4e0a\u5347\u3002\u521d\u770b\u662f\u4e00\u4e2a\u65f6\u95f4\u6362\u7a7a\u95f4\u7684\u505a\u6cd5\uff0c\u4e0d\u8fc7\uff0c\u8bba\u6587\u4e2d\u9009\u7528\u7684Bloom Filter\u662fBlockedBloom\uff0c\u8fd9\u662f2019\u5e74\u63d0\u51fa\u7684\u4e00\u4e2a\u57fa\u4e8eBloom Filter\u7684\u4f18\u5316\u7248\u672c[4]\uff0c\u672c\u8eab\u6027\u80fd\u5c31\u5df2\u7ecf\u6bd4\u8f83\u597d\uff0c\u800c\u4e14\u6d4b\u8bd5\u7684Filter hash function\u90fd\u662f\u9488\u5bf9long\u503c\u7684\uff0c\u800cLindorm\u4e2d\u7684Bloom Filter\u662f\u9488\u5bf9byte\u6570\u7ec4\u505ahash\u7684\uff0c\u6027\u80fd\u8868\u73b0\u53ef\u80fd\u4e0d\u5b8c\u5168\u4e00\u81f4\u3002\u56e0\u6b64\uff0cRibbon Filter\u662f\u5426\u80fd\u5728\u4efb\u4f55\u573a\u666f\u4e0b\u90fd\u80fdLindorm\u5e26\u6765\u6027\u80fd\u63d0\u5347\uff0c\u9700\u8981\u6211\u4eec\u628aRibbon Filter\u5f15\u5165Lindorm\u4e2d\uff0c\u5728\u751f\u4ea7\u73af\u5883\u505a\u4e00\u4e9b\u6d4b\u8bd5\u30023. \u5e94\u7528Ribbon Filter3.1 \u6838\u5fc3\u903b\u8f91\u7684\u5b9e\u73b0\u6211\u4eec\u53c2\u8003\u8bba\u6587\u4e2d\u7684Ribbon Filter\u4f7f\u7528Java\u8fdb\u884c\u4e86\u5b9e\u73b0\u5e76\u96c6\u6210\u5230Lindorm\u4e2d\u3002\u8bba\u6587\u4e2d\u6709\u4e00\u79cd\u7a7a\u95f4\u5f00\u9500\u66f4\u5c0f\u7684\u4f18\u5316\u7248\u672c\u7684Ribbon Filter\uff0c\u4f46\u662f\u5b83\u4e0d\u80fd\u4fdd\u8bc1\u6784\u9020\u6210\u529f\uff0c\u9700\u8981\u91cd\u8bd5\uff0c\u8fd9\u5728Lindorm\u4e2d\u662f\u4e0d\u80fd\u63a5\u53d7\u7684\uff0cLindorm\u4e2d\u6784\u5efa\u8fc7\u6ee4\u5668\u662f\u4e0d\u80fd\u5931\u8d25\u7684\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4Flush\u6216\u8005Compaction\u5931\u8d25\u3002\u6240\u4ee5\u6211\u4eec\u6700\u540e\u9009\u7528\u4e86\u5bbd\u5ea6w=64\u7684Homogeneous Ribbon Filter\u3002\u6700\u7ec8\u7684\u5b9e\u73b0\u6709\u4e00\u4e9b\u5de5\u7a0b\u4e0a\u7684\u53d6\u820d\uff0c\u56e0\u6b64\u4e0e\u8bba\u6587\u8fd8\u662f\u5b58\u5728\u4e00\u4e9b\u5dee\u5f02\uff1a\u8bba\u6587\u4e2d\u5b9e\u73b0\u7684Ribbon Filter\u4f7f\u7528\u7684key\u7c7b\u578b\u662flong\u578b\uff0c\u5728Lindorm\u4e2d\u6bcf\u4e2akey\u662f\u4e00\u4e2abyte\u6570\u7ec4\uff1b\u8bba\u6587\u4e2d\u5b9e\u73b0\u7684Ribbon Filter\u6784\u5efa\u7684\u65f6\u5019\u76f4\u63a5\u63d0\u4f9b\u4e00\u4e2akey\u6570\u7ec4\uff0c\u4f46\u662f\u5728Lindorm\u4e2dkey\u662f\u6d41\u5f0f\u7684\u4e00\u4e2a\u4e2a\u6765\uff0c\u5e76\u4e14\u6570\u91cf\u672a\u77e5\uff1b\u8bba\u6587\u4e2d\u5b9e\u73b0\u7684Ribbon Filter\u6784\u5efa\u63d0\u4f9bkey\u6570\u7ec4\u7684\u5927\u5c0fn\u662f\u5df2\u77e5\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195300\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\uff08\u9519\u8bef\u7387f\u5df2\u77e5\uff09\u5f97\u5230Ribbon Filter\u7684\u7a7a\u95f4\u5927\u5c0f\uff0c\u4f46\u662fLindorm\u4e2d\u53ea\u63d0\u4f9b\u7a7a\u95f4\u5927\u5c0fbitSize\u548c\u9519\u8bef\u7387f\uff0ckey\u6570\u91cfn\u672a\u77e5\uff0c\u9700\u8981\u53cd\u5411\u6c42\u51fan\uff1b\u8bba\u6587\u4e2d\u5b9e\u73b0\u7684Ribbon Filter\u8f93\u51fa\u7684\u662f\u4e00\u4e2along\u578b\u6570\u7ec4\uff0c\u4f46\u662f\u5728Lindorm\u4e2d\u5f97\u662f\u4e00\u4e2aByteBuffer\u624d\u80fd\u7edf\u4e00\u5b58\u5230\u6587\u4ef6\u7cfb\u7edf\u4e2d\uff1b\u8bba\u6587\u4e2d\u5b9e\u73b0\u7684Ribbon Filter\u67e5\u8be2\u8fc7\u7a0b\u53ef\u4ee5\u4f7f\u7528\u7c7b\u4e2d\u5168\u90e8\u4e2d\u95f4\u53d8\u91cf\uff0c\u4f46\u662f\u5728Lindorm\u4e2d\u67e5\u8be2\u51fd\u6570\u662f\u9759\u6001\u7684\uff0c\u53ea\u6709\u5c11\u90e8\u5206meta\u4fe1\u606f\u548c\u5b58\u6709Ribbon Filter\u7684\u6570\u636e\u5757\u53ef\u4ee5\u4f7f\u7528\u3002\u00a0Ribbon Filter\u7684\u6784\u5efa\uff1aBloom Filter\u6784\u5efa\u8fc7\u7a0b\u53ea\u9700\u8981\u6dfb\u52a0\u5143\u7d20\u5373\u53ef\uff0c\u6dfb\u52a0\u5b8c\u4e86\u5c31\u6784\u5efa\u5b8c\u4e86\uff0c\u4f46\u662fRibbon Filter\u6784\u5efa\u8fc7\u7a0b\u8fd8\u5305\u62ec\u6c42\u89e3\u65b9\u7a0b\u9636\u6bb5\uff0c\u8fd9\u4e2a\u9636\u6bb5\u662f\u6700\u8017\u65f6\u7684\uff0c\u8fd9\u4e2a\u9636\u6bb5\u653e\u5728\u54ea\u4e2a\u5730\u65b9\u5728\u4ec0\u4e48\u65f6\u95f4\u7531\u8c01\u8c03\u7528\u6765\u6267\u884c\uff0c\u4f1a\u4e0d\u4f1a\u5f71\u54cd\u6027\u80fd\u662f\u4e00\u4e2a\u5927\u5927\u7684\u95ee\u9898\u3002\u76ee\u524d\u662f\u653e\u5728Ribbon Filter\u7684\u5199\u8fc7\u7a0b\u4e2d\u6267\u884c\uff0c\u5199\u4e4b\u524d\u4f1a\u5148\u6c42\u89e3\u65b9\u7a0b\uff0c\u6027\u80fd\u5f71\u54cd\u76ee\u524d\u8fd8\u6ca1\u53d1\u73b0\u3002\u00a0Ribbon Filter\u7684\u67e5\u8be2\uff1aBloom\u53ea\u9700\u8981\u5c11\u91cf\u7684meta\u4fe1\u606f\u7136\u540e\u6309\u9700\u52a0\u8f7d\u9700\u8981\u7684Bloom Block\uff0c\u5c31\u53ef\u4ee5\u5b8c\u6210\u67e5\u8be2\u8fc7\u7a0b\uff0cmeta\u4fe1\u606f\u6709VERSION,byteSize,hashCount,hashType,keyCount\u3002Ribbon\u4e0d\u9700\u8981hashCount\u5b57\u6bb5\uff0c\u5176\u5b83\u90fd\u8981\uff0c\u9664\u6b64\u4e4b\u5916\u8fd8\u9700\u8981numStarts\uff08\u54c8\u5e0c\u6620\u5c04\u5230\u7684\u533a\u95f4\u4e0a\u9650\uff09\uff0cupperNumColumns\uff08\u6307\u7eb9\u4f4d\u6570\u7684\u5411\u4e0a\u53d6\u6574\uff09\uff0cupperStartBlock\uff08\u6307\u793afloor(r)\u4f4d\u7684slot\u4e0eceil(r)\u7684slot\u7684\u5206\u754c\uff09\uff0c\u540e\u7eed\u5f15\u5165\u5931\u8d25\u91cd\u8bd5\u673a\u5236\u8fd8\u5f97\u6709\u54c8\u5e0c\u79cd\u5b50seed\u5b57\u6bb5\u3002\u4e3a\u4e86\u4e0d\u6539\u53d8meta\u4fe1\u606f\u7684\u957f\u5ea6\uff0c\u53ea\u5c06hashCount\u53d8\u6210\u4e86slotCount\uff08slot\u7684\u6570\u91cf\uff09\uff0c\u90fd\u662fint\u7c7b\u578b\uff0cnumStarts = slotCount-63\uff0cupperNumColumns = (ribbonBitSize + slotCount &#8211; 1) \/ slotCount\uff0cupperStartBlock = upperNumColumns <em> (slotCount &gt;&gt; 6) &#8211; (ribbonBitSize &gt;&gt; 6)\uff0c\u8fd9\u6837\u5c31\u5b8c\u7f8e\u4e86\uff0c\u4ece\u7269\u7406\u5b58\u50a8\u5c42\u662f\u4e0d\u592a\u80fd\u770b\u51faBloom meta block\u548cRibbon meta block\u7684\u533a\u522b\u7684\uff0c\u65e2\u6ca1\u589e\u5b57\u6bb5\u4e5f\u6ca1\u51cf\u5b57\u6bb5\u4e5f\u6ca1\u4fee\u6539\u5b57\u6bb5\u7c7b\u578b\u30023.2 \u521d\u6b65\u6d4b\u8bd5\u672c\u6b21benchmark\u5bf9\u6bd4\u7684\u662f\u5728Lindorm\u4e2d\u5e94\u7528\u7684Bloom Filter\u548cRibbon Filter\u3002\u8fd9\u91cc\u7684key\u7528\u7684\u662fbyte\u6570\u7ec4\u7c7b\u578b\uff0ckey length\u662fbyte\u6570\u7ec4\u5927\u5c0f\uff1b\u9519\u8bef\u7387\u90fd\u4e3a1%\uff0chash\u7c7b\u578b\u90fd\u662fmurmur\uff0cConstruct\u5305\u62ec\u6dfb\u52a0key\u548c\u6c42\u89e3\u65b9\u7a0b\u3002\u00a01. Construct\uff0c\u6784\u5efafilter\uff0c\u5355\u4f4d\u662fns\/key, n=10^6\uff0c\u4e0b\u540c\u3002key lengthRibbon,ns\/key,\u00a0n=10^6Bloom,ns\/key,\u00a0n=10^6ratio (Ribbon:Bloom)10109.926136.01280.82%25143.178164.24787.17%50196.083227.89886.04%250334.312467.88471.45%20001375.1652006.23568.54%\u00a0\u00a0\u53ef\u4ee5\u770b\u5230\uff0c\u5728Lindorm\u4e2d\uff0c\u968f\u7740Key\u957f\u5ea6\u7684\u589e\u957f\uff0c\u6784\u5efaRibbon Filter\u7684\u901f\u5ea6\u53cd\u800c\u4f1a\u66f4\u5feb\u3002\u00a02. Query\uff0c\u67e5\u8be2key lengthRibbon,ns\/key,\u00a0n=10^6Bloom,ns\/key,\u00a0n=10^6ratio (Ribbon:Bloom)1020.82722.13594.09%2538.28544.76485.53%5051.73070.07573.82%250147.951256.86357.60%20001125.7602230.20050.48%\u00a0\u00a0\u53ef\u4ee5\u770b\u5230\uff0c\u5728Lindorm\u4e2d\uff0c\u968f\u7740Key\u957f\u5ea6\u7684\u589e\u957f\uff0c\u67e5\u8be2Ribbon Filter\u7684\u901f\u5ea6\u53cd\u800c\u66f4\u5feb\u3002\u00a03. space load\uff0c\u7a7a\u95f4\u8d1f\u8f7d\u8ddfkey length\u65e0\u5173key lengthRibbon,bit\/key,\u00a0n=10^6Bloom,bit\/key,\u00a0n=10^6ratio (Ribbon:Bloom)<\/em>7.2329.58575.45%\u00a0\u00a0\u4ece\u521d\u6b65\u6d4b\u8bd5\u7684\u7ed3\u679c\u6765\u770b\uff0c\u4f3c\u4e4e\u6d4b\u8bd5\u7ed3\u8bba\u6bd4\u8bba\u6587\u4e2d\u66f4\u597d\uff0c\u65e0\u8bba\u67e5\u8be2\u901f\u5ea6\uff0c\u6784\u5efa\u901f\u5ea6\uff0cRibbon Filter\u90fd\u6bd4Bloom Filter\u66f4\u4f18\u3002\u6211\u4eec\u5206\u6790\uff0c\u8fd9\u662f\u7531\u4e8eLindorm\u4e2d\u539f\u6765\u4f7f\u7528\u7684BloomFilter\u662f\u4e00\u4e2a\u6ca1\u6709\u4f18\u5316\u8fc7\u7684\u539f\u59cb\u7248\u672c\uff0c\u800c\u4e14Bloom Filter\u67e5\u8be2\u65f6\u9700\u8981\u591a\u6b21\u6267\u884chash\u51fd\u6570\uff0c\u800chash bytes\u7684\u6d88\u8017\u6bd4\u8bba\u6587\u4e2dhash \u6570\u5b57\u7684\u6d88\u8017\u8981\u5927\u7684\u591a\uff0c\u56e0\u6b64Ribbon Filter\u7684\u67e5\u8be2\u6027\u80fd\u5e76\u6ca1\u6709\u8bba\u6587\u4e2d\u8bf4\u7684\u90a3\u4e48\u5dee\uff0c\u53cd\u800c\u968f\u7740key\u7684\u957f\u5ea6\u53d8\u957f\uff0c\u67e5\u8be2\u7684\u6027\u80fd\u8981\u5f3a\u4e8e\u539f\u6709\u7684BloomFilter\u5b9e\u73b0\u5e76\u4e14\u5dee\u8ddd\u8d8a\u6765\u8d8a\u5927\u3002\u6784\u5efaFilter\u65f6\u7684\u7ed3\u8bba\u4e5f\u7c7b\u4f3c\uff0c\u968f\u7740key\u957f\u5ea6\u7684\u4e0a\u5347\uff0cRibbonFilter\u7684\u6784\u5efa\u901f\u5ea6\u66f4\u5feb\uff0c\u5b8c\u5168\u4f18\u4e8eBloom Filter\u3002\u4f46\u5728\u751f\u4ea7\u8fc7\u7a0b\u4e2d\uff0c\u6784\u5efa\u8fc7\u6ee4\u5668\u53ea\u5360Lindorm\u751f\u4ea7LDFile\u5168\u8fc7\u7a0b\u4e2d\u7684\u5f88\u5c0f\u4e00\u90e8\u5206\uff0c\u57fa\u672c\u4e0a\u4e0d\u4f1a\u5bf9Lindorm\u6587\u4ef6\u7684\u751f\u6210\u901f\u5ea6\u9020\u6210\u5f71\u54cd\u3002\u5728\u7a7a\u95f4\u4e0a\uff0c\u76f8\u540c\u7684\u9519\u8bef\u7387\u4e0b\uff0cRibbon Filter\u786e\u5b9e\u80fd\u6bd4Bloom Filter\u8282\u770125%\u7684\u7a7a\u95f4\u3002\u57fa\u4e8e\u4ee5\u4e0a\u6d4b\u8bd5\u7ed3\u8bba\uff0c\u6211\u4eec\u89c9\u5f97\u4f7f\u7528Ribbon Filter\u66ff\u4ee3Bloom Filter\uff0c\u65e0\u8bba\u4ece\u54ea\u4e2a\u89d2\u5ea6\u4e0a\u6765\u8bf4\uff0c\u90fd\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u30023.3 \u751f\u4ea7\u6d4b\u8bd5\u6211\u4eec\u628aRibbon Filter\u96c6\u6210\u5728Lindorm\u5bbd\u8868\u5f15\u64ce\u4e2d\uff0c\u8fdb\u884c\u4e86\u5168\u94fe\u8def\u7684\u538b\u6d4b\uff0c\u538b\u6d4b\u673a\u5668\u7684\u914d\u7f6e\u4e3a4\u68388GB\uff0c\u4f7f\u7528ESSD\u5b58\u50a8\uff0c\u538b\u6d4b\u5de5\u5177\u7528\u7684\u662fycsb\u672c\u6b21\u6d4b\u8bd5\u7684\u662f\u6279\u91cf\u8bfb\u7684\u541e\u5410\u91cf\u5bf9\u6bd4\u6d4b\u8bd5\u548c\u5ef6\u8fdf\u5bf9\u6bd4\u6d4b\u8bd5\uff0c\u4ee5\u53ca\u8bfb\u53d6\u8fc7\u7a0b\u4e2d\u7684\u7f13\u5b58\u547d\u4e2d\u7387\u5bf9\u6bd4\u6d4b\u8bd5\uff0c\u4ee5\u53camajor compaction\u6027\u80fd\u5bf9\u6bd4\u6d4b\u8bd5\u3002\u8bfb\u53d6\u6d4b\u8bd5\u6839\u636erowKey\u7684\u5b57\u8282\u6570\u7684\u4e0d\u540c\u5206\u4e3a\u56db\u4e2a\u573a\u666f\uff1a10bytes\uff0c25bytes\uff0c50bytes\uff0c300bytes\u3002\u6d4b\u8bd5\u8868\u5355\u8282\u70b9\u5206\u5e03\uff0cload10\u4ebf\u884c\u6570\u636e\uff0c\u6bcf\u884c\u6570\u636e\u4e00\u4e2a\u5217\u65cf\uff0c\u51715\u5217\uff0c\u6bcf\u5217value 20bytes\uff0c\u6bcf\u884c\u6570\u636e\u5927\u69820.1kb\uff0c\u8868\u5927\u5c0f100G\u5de6\u53f3\uff0c\u6279\u91cf\u8bfb\u4e00\u6b2120\u884c\u3002\u00a0\u6279\u91cf\u8bfb\u541e\u5410\u91cf\u5bf9\u6bd4<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195301\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u6279\u91cf\u8bfb\u5e73\u5747\u5ef6\u8fdf\u5bf9\u6bd4<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195302\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u8bfb\u53d6\u8fc7\u7a0b\u4e2d\u7684\u7f13\u5b58\u547d\u4e2d\u7387\u5bf9\u6bd4<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195303\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>\u5355\u8282\u70b9major compaction\u6027\u80fd\u5bf9\u6bd4\uff08cpu\u6253\u6ee1\uff09<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042195304\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\" ><br \/>Filter\u7684meta\u4fe1\u606f\u5bf9\u6bd4\u6307\u6807Bloom FilterRibbon FilterSize\uff08bytes\uff09119930889043968No of Keys99998339999833Max Keys1000149910005000Percentage filled100%100%Number of chunks9269\u00a0\u00a0\u751f\u4ea7\u7684\u6d4b\u8bd5\u8bc1\u5b9e\u4e86\u6211\u4eec\u57283.2\u8282\u7406\u8bba\u5206\u6790\u7684\u7ed3\u679c\u3002\u5f15\u5165Ribbon Filter\u540e\uff0c\u8bfb\u7684\u541e\u5410\u6700\u9ad8\u6709\u4e8618%\u7684\u63d0\u5347\u3002\u8bfbRT\u6709\u4e86\u6700\u9ad815%\u7684\u4e0b\u964d\u3002\u541e\u5410\u7684\u63d0\u5347\u548cRT\u7684\u4e0b\u964d\u4e3b\u8981\u6765\u6e90\u4e8e\u4f7f\u7528Ribbon Filter\u540e\uff0c\u8fc7\u6ee4\u5668\u7a7a\u95f4\u7684\u51cf\u5c11\u548c\u5185\u5b58\u547d\u4e2d\u7387\u7684\u63d0\u5347\u3002\u5e76\u4e14\u5728\u4e0d\u540c\u7684key\u5927\u5c0f\u4e0b\uff0cRibbon Filter\u5747\u6709\u597d\u8fc7Bloom Filter\u7684\u8868\u73b0\u3002\u5728Compaction\u7684\u5bf9\u6bd4\u6d4b\u8bd5\u4e2d\uff0c\u5927\u5bb6\u4e5f\u53ef\u4ee5\u770b\u5230\uff0c\u4f7f\u7528Ribbon Filter\u4e0e\u5426\u5bf9Compaction\u7684\u901f\u5ea6\u57fa\u672c\u6ca1\u6709\u5f71\u54cd\u30024 \u603b\u7ed3\u672c\u6587\u7814\u7a76\u4e86\u4e00\u79cd\u65b0\u7684\u8fc7\u6ee4\u5668Ribbon Filter\u3002\u6211\u4eec\u6839\u636e\u8bba\u6587\u7684\u601d\u8def\u5728Lindorm\u4e2d\u8fdb\u884c\u4e86\u5b9e\u73b0\u3002\u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u6211\u4eec\u53d1\u73b0Ribbon Filter\u80fd\u591f\u8282\u770125%\u7684\u8fc7\u6ee4\u5668\u7a7a\u95f4\u5360\u7528\uff0c\u4ece\u800c\u5728\u5404\u79cd\u6761\u4ef6\u4e0b\u63d0\u5347Lindorm\u7684\u8bfb\u6027\u80fd\u3002Lindorm\u5c06\u5728\u4e0b\u4e00\u4e2a\u7248\u672c\u4e2d\u96c6\u6210Ribbon Filter\uff0c\u5e26\u7ed9\u7528\u6237\u6781\u81f4\u5730\u6027\u80fd\u4f53\u9a8c\u3002\u53e6\u5916\uff0c\u4e3a\u4e86\u4fdd\u8bc1Ribbon Filter\u6784\u5efa\u4e0d\u5931\u8d25\uff0c\u6211\u4eec\u9009\u7528\u4e86\u4e00\u79cd\u7a7a\u95f4\u5360\u7528\u76f8\u5bf9\u8f83\u591a\u7684\u5b9e\u73b0\uff0c\u6211\u4eec\u5c06\u5728Ribbon Filter\u7684\u57fa\u7840\u4e0a\u7ee7\u7eed\u505a\u4e86\u4e00\u4e9b\u63a2\u7d22\uff0c\u4fdd\u8bc1\u6784\u5efa\u4e0d\u5931\u8d25\u91cd\u8bd5\u7684\u524d\u63d0\u4e0b\uff0c\u8fdb\u4e00\u6b65\u8282\u7701\u8fc7\u6ee4\u5668\u7684\u7a7a\u95f4\u3002\u53c2\u8003\u6587\u732e[1]Burton H. Bloom. 1970. Space\/Time Trade-offs in Hash Coding with Allowable Errors. Commun. ACM 13, 7 (1970), 422\u2013426.[2]Thomas Mueller Graf and Daniel Lemire. 2020. Xor Filters: Faster and Smaller Than Bloom and Cuckoo Filters. ACM J. Exp. Algorithmics 25 (2020), 1\u201316.\u00a0<a href=\"https:\/\/link.segmentfault.com\/?enc=7zkycdyt55PIC5vjcc8erQ%3D%3D.djQCpHqYpcCJM5XR6zQCH0hNjdebf3Q%2BRbe%2FcCZ%2Bbds%3D\" rel=\"nofollow\">https:\/\/doi.org\/10.1145\/3376122<\/a>[3]Dillinger, Peter C. and Stefan Walzer. \u201cRibbon filter: practically smaller than Bloom and Xor.\u201d <em>ArXiv<\/em> abs\/2103.02515 (2021).[4]Harald Lang, Thomas Neumann, Alfons Kemper, and Peter A. Boncz. 2019. Performance-Optimal Filtering: Bloom overtakes Cuckoo at High-Throughput. Proc. VLDB Endow. 12, 5 (2019), 502\u2013515.\u00a0\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=9TF%2B%2BkMtRUAdatr7%2F%2B9Ndg%3D%3D.%2BqvdMEL3fybF2sKcs%2FmCnLHa4WCHw1Zs79l2AqwecB8DPpr206qXWWwcS3yflwjL\" rel=\"nofollow\">http:\/\/click.aliyun.com\/m\/100&#8230;<\/a>\u672c\u6587\u4e3a\u963f\u91cc\u4e91\u539f\u521b\u5185\u5bb9\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042195276\">https:\/\/segmentfault.com\/a\/1190000042195276<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u672c\u6587\u7814\u7a76\u4e86\u4e00\u79cd\u65b0\u7684\u8fc7\u6ee4\u5668Ribbon Filter\uff0c\u5e76\u5c06\u5176\u96c6\u6210\u5230Lindorm\u4e2d\u4f5c\u8005\uff1a\u7bab\u82cf \u671d\u6208 \u6b63\u7814 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10005994","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10005994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10005994"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10005994\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10005994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10005994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10005994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}