{"id":10008368,"date":"2024-02-19T18:59:03","date_gmt":"2024-02-19T10:59:03","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008368"},"modified":"2024-02-19T18:59:03","modified_gmt":"2024-02-19T10:59:03","slug":"%e8%90%a5%e9%94%80%e7%b3%bb%e7%bb%9f%e9%bb%91%e5%90%8d%e5%8d%95%e4%bc%98%e5%8c%96%ef%bc%9a%e4%bd%8d%e5%9b%be%e7%9a%84%e5%ba%94%e7%94%a8%e8%a7%a3%e6%9e%90-%e4%ba%ac%e4%b8%9c%e4%ba%91%e6%8a%80","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008368","title":{"rendered":"\u8425\u9500\u7cfb\u7edf\u9ed1\u540d\u5355\u4f18\u5316\uff1a\u4f4d\u56fe\u7684\u5e94\u7528\u89e3\u6790 | \u4eac\u4e1c\u4e91\u6280\u672f\u56e2\u961f"},"content":{"rendered":"<h2>\u80cc\u666f<\/h2>\n<p>\u8425\u9500\u7cfb\u7edf\u4e2d\uff0c\u5ba2\u6237\u6295\u8bc9\u662f\u4e1a\u52a1\u53d1\u5c55\u7684\u4e00\u5927\u963b\u788d\uff0c\u4e00\u822c\u4f1a\u8fc7\u6ee4\u6389\u9ed1\u540d\u5355\u9ad8\u98ce\u9669\u8d26\u53f7\uff0c\u5e76\u914d\u5408\u9891\u63a7\u7b56\u7565\uff0c\u6765\u51cf\u5c11\u5ba2\u8bc9\uff0c\u8fdb\u800c\u589e\u52a0\u8425\u9500\u6548\u7387\uff0c\u51cf\u5c11\u8425\u9500\u6210\u672c\uff0c\u63d0\u5347\u8425\u9500\u8d28\u91cf\u3002<\/p>\n<p>\u8425\u9500\u7cfb\u7edf\u4e00\u822c\u662f\u901a\u8fc7\u5927\u6570\u636e\u5206\u6790\u5efa\u6a21\uff0c\u5728CDP\uff08\u5ba2\u6237\u6570\u636e\u5e73\u53f0\uff0c\u4ee5\u5ba2\u6237\u4e3a\u6838\u5fc3\uff0c\u56f4\u7ed5\u6570\u636e\u878d\u5408\u3001\u4eba\u7fa4\u5708\u9009\u3001\u7528\u6237\u6d1e\u5bdf\u7b49\u63d0\u4f9b\u4ea7\u54c1\u80fd\u529b\uff09\u521b\u5efa\u8425\u9500\u76ee\u6807\u5ba2\u6237\u7fa4\u4f53\uff0c\u9ed1\u540d\u5355\u540c\u6837\u4e5f\u662f\u901a\u8fc7CDP\u7ef4\u62a4\u3002\u4e0b\u9762\u7684\u56fe\u7247\u7b80\u5355\u63cf\u8ff0\u4e86\u8fc7\u6ee4\u9ed1\u540d\u5355\u7684\u5904\u7406\u6d41\u7a0b\uff0c\u6d41\u7a0b\u662f\u76f8\u5bf9\u7b80\u5355\u7684\u3002\u4f46\u662f\uff0c\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\u5374\u53d1\u73b0\u4e00\u4e2a\u95ee\u9898\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u8fd130\u4e07\u7684\u8425\u9500\u7fa4\u4f53\uff0c\u6574\u4e2a\u89e6\u8fbe\u6d41\u7a0b\u9700\u8981\u5904\u7406\u4e00\u4e2a\u591a\u5c0f\u65f6\uff0c\u800c\u5176\u4e2d\u8fc7\u6ee4\u9ed1\u540d\u5355\u5c31\u5360\u7528\u4e86\u8fd1\u534a\u4e2a\u5c0f\u65f6\u7684\u65f6\u95f4\uff0c\u4e1a\u52a1\u6709\u70b9\u96be\u4ee5\u63a5\u53d7\u8fd9\u4e2a\u6027\u80fd\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639077\" alt=\"\u9ed1\u540d\u5355\u5904\u7406\u6d41\u7a0b\" title=\"\u9ed1\u540d\u5355\u5904\u7406\u6d41\u7a0b\"><\/p>\n<h2>\u6027\u80fd\u4f18\u5316<\/h2>\n<h3>\u5f15\u5165\u591a\u7ebf\u7a0b\u4f18\u5316<\/h3>\n<p>\u5176\u5b9e\u5f88\u5bb9\u6613\u5c31\u80fd\u60f3\u5230\uff0c\u5bf9\u4e8e\u8c03\u7528RPC\u63a5\u53e3\u8fd9\u79cd\u542b\u6709I\/O\u64cd\u4f5c\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u5f15\u5165\u591a\u7ebf\u7a0b\u4f18\u5316\uff0c\u5c06\u4e00\u4e2a\u51e0\u5341\u4e07\u7684\u8d26\u53f7\u96c6\u5408\u62c6\u5206\u4e3a\u591a\u4e2a\u5b50\u4efb\u52a1\u63d0\u4ea4\u7ed9\u7ebf\u7a0b\u6c60\u5904\u7406\uff0c\u4ece\u800c\u52a0\u5feb\u5904\u7406\u901f\u5ea6\u3002\u4ece\u4e0b\u56fe\u53ef\u4ee5\u770b\u51fa\u5f15\u5165\u591a\u7ebf\u7a0b\u540e\u6027\u80fd\u6709\u5f88\u660e\u663e\u7684\u6539\u5584\uff0c\u5355\u7ebf\u7a0b\u5904\u740625\u4e07\u300150\u4e07\u4e2a\u8d26\u53f7\u7684\u7fa4\u4f53\u5206\u522b\u9700\u8981\u8fd1\u534a\u5c0f\u65f6\u3001\u8fd1\u4e00\u5c0f\u65f6\uff0c\u6539\u4e3a25\u4e2a\u7ebf\u7a0b\u5904\u7406\u540e\u53ef\u4ee5\u5206\u522b\u63a7\u5236\u57281\u5206\u949f\u30012\u5206\u949f\u5de6\u53f3\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639078\" alt=\"\u591a\u7ebf\u7a0b\u5904\u7406\" title=\"\u591a\u7ebf\u7a0b\u5904\u7406\" loading=\"lazy\"><\/p>\n<h3>\u5f15\u5165\u4f4d\u56fe\u4f18\u5316<\/h3>\n<p>\u8fdb\u4e00\u6b65\u4e86\u89e3CDP\u7684\u5e95\u5c42\u539f\u7406\u540e\uff0c\u4f1a\u53d1\u73b0\u8fd9\u4e2a\u95ee\u9898\u5e94\u8be5\u8fd8\u6709\u5176\u4ed6\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5373\u901a\u8fc7\u4f4d\u56fe\u4f18\u5316\u3002CDP\u7684\u7fa4\u4f53\u90fd\u4f1a\u6709\u5bf9\u5e94\u7684\u4f4d\u56fe\u6587\u4ef6\uff0c\u4e5f\u5c31\u662f\u8bf4\u8425\u9500\u5ba2\u6237\u7fa4\u4f53\u548c\u9ed1\u540d\u5355\u7fa4\u4f53\u90fd\u662f\u4ee5\u4f4d\u56fe\u7684\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u7684\uff0c\u901a\u8fc7CDP\u4e0b\u8f7d\u7fa4\u4f53\u7684SDK\u5c31\u53ef\u4ee5\u83b7\u53d6\u5230\u4f4d\u56fe\u6587\u4ef6\uff0c\u8425\u9500\u7fa4\u4f53\u7684\u4f4d\u56fe\u4e0e\u9ed1\u540d\u5355\u7fa4\u4f53\u4f4d\u56fe\u8fdb\u884c\u4e0e\u975e\u64cd\u4f5c\uff08<code>andNot<\/code>\uff0c\u5c31\u662f\u4ece\u4e00\u4e2a\u4f4d\u56fe\u4e2d\u79fb\u9664\u53e6\u4e00\u4e2a\u4f4d\u56fe\u4e2d\u5b58\u5728\u7684\u5143\u7d20\uff0c\u800c\u4fdd\u7559\u4e0d\u5728\u53e6\u4e00\u4e2a\u4f4d\u56fe\u4e2d\u7684\u5143\u7d20\uff09\uff0c\u5f97\u5230\u7684\u65b0\u7684\u4f4d\u56fe\u5c31\u662f\u8fc7\u6ee4\u6389\u9ed1\u540d\u5355\u8d26\u53f7\u540e\u7684\u76ee\u6807\u5ba2\u6237\u7684\u4f4d\u56fe\u3002\u4ee3\u7801\u5b9e\u73b0\u5f88\u7b80\u5355\uff0c\u4f7f\u7528CDP SDK\u7684\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff08\u4e5f\u53ef\u4ee5\u53c2\u8003<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=TD8Cosx5jwWI%2Bk0%2F%2BfMgkw%3D%3D.RtSiYNRI3nG5gOlzHm22HJ1n5krmmhfLWTPyAtsNh%2FjXBbBkUFTtRt%2BVgnz8mh%2FMcMEab6lPkuqz%2Fc1BrJ9lCCkkLiNjXOLZJeOs4oAudRBwSaKUalOVokXz%2ByCgZMpp6bPVvl88JhiFfwfarby618k6AoPbkDczk08Jufc9bR8%3D\" rel=\"noopener noreferrer\">GitHub<\/a>\u793a\u4f8b\u4ee3\u7801\uff0c\u4f46\u4e0d\u9002\u7528\u4e8eCDP\u7fa4\u4f53\u4f4d\u56fe\u5904\u7406\uff09\uff1a<\/p>\n<pre><code>DataLoader dataLoader = new DataLoader(token, bitMapBaseUrl);\nABitmap customerBitmap = dataLoader.loadGroup(customerGroupCode);\nABitmap blacklistBitmap = dataLoader.loadGroup(blacklistGroupCode);\ncustomerBitmap.andNot(blacklistBitmap);\n<\/code><\/pre>\n<p>\u4f4d\u56fe\u5b58\u50a8\u76f8\u5f53\u8282\u7701\u7a7a\u95f4\uff0c50\u4e07\u7fa4\u4f53\u7684\u4f4d\u56fe\u6587\u4ef6\u4e5f\u5c31\u7ea62MB\u5927\u5c0f\u3002\u540c\u65f6\u4f4d\u56fe\u7684\u4e0e\u975e\u64cd\u4f5c\u662f\u76f8\u5f53\u5feb\u7684\uff0c\u4e0a\u8fb9\u4f8b\u5b50\u4e2d\u768425\u4e07\u300150\u4e07\u7684\u7fa4\u4f53\u90fd\u53ef\u4ee5\u572880\u6beb\u79d2\u5de6\u53f3\u8fc7\u6ee4\u6389\u9ed1\u540d\u5355\u8d26\u53f7\u3002\u4ece\u8fd1\u534a\u5c0f\u65f6\u3001\u8fd1\u4e00\u5c0f\u65f6\u5230\u51e0\u5341\u6beb\u79d2\u8fd9\u4e2a\u5bf9\u6bd4\u975e\u5e38\u60ca\u4eba\u4e86\uff0c\u90a3\u4e48\u4e3a\u4ec0\u4e48\u4f4d\u56fe\u7684\u5904\u7406\u901f\u5ea6\u53ef\u4ee5\u8fd9\u4e48\u5feb\u5462\uff1f<\/p>\n<h2>\u4f4d\u56fe\u7b80\u4ecb<\/h2>\n<h3>\u4f4d\u56fe\u539f\u7406<\/h3>\n<p>\u4f4d\u56fe\u7684\u57fa\u672c\u601d\u60f3\u662f\u4f7f\u7528bit\u6765\u6807\u8bb0\u4e00\u4e2a\u6570\u503c\uff0c1\u8868\u793a\u8be5\u6570\u503c\u5b58\u5728\uff0c0\u8868\u793a\u4e0d\u5b58\u5728\u3002\u7531\u4e8e\u4ee5\u4f4d\u4e3a\u5355\u4f4d\u5b58\u50a8\u6570\u636e\uff0c\u56e0\u6b64\u53ef\u4ee5\u5927\u5927\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u975e\u5e38\u9ad8\u6548\u5730\u8868\u793a\u548c\u64cd\u4f5c\u6570\u503c\u96c6\u5408\u3002<\/p>\n<p>\u4e3e\u4e2a\u76f4\u89c2\u7684\u4f8b\u5b50\uff0c\u670940\u4ebf\u4e2a\u4e0d\u91cd\u590d\u7684\u968f\u673a\u81ea\u7136\u6570\uff0c\u5982\u679c\u4f7f\u7528<code>long<\/code>\u578b\u6570\u503c\u5b58\u50a8\uff0c\u4e00\u4e2a<code>long<\/code>\u578b\u6570\u503c8\u4e2a\u5b57\u8282\uff0c40\u4ebf\u4e2a\u6570\u503c\u5360\u7528\u7ea629.8GB\uff0c\u4f46\u5982\u679c\u662f\u5b58\u50a8\u4e3a40\u4ebf\u4e2abit\uff0c\u5219\u53ea\u9700\u8981\u7ea60.47GB\u3002<\/p>\n<p>\u5728Java\u4e2d\u4e00\u4e2a<code>long<\/code>\u578b\u6570\u503c\u536064\u4f4d\uff0c\u53ef\u4ee5\u7528\u4e00\u4e2a<code>long<\/code>\u578b\u6570\u7ec4<code>long[] words = new long[(nBits - 1) \/ 64 + 1]<\/code>\u5b58\u50a8\u4f4d\u56fe\uff0c\u5176\u4e2d<code>nBits<\/code>\u8868\u793a\u4f4d\u56fe\u7684\u521d\u59cb\u5927\u5c0f\u3002\u5bf9\u4e8e\u7ed9\u5b9a\u4efb\u610f\u81ea\u7136\u6570<code>x<\/code>\uff0c<code>x \/ 64<\/code>\u5c31\u80fd\u5f97\u5230<code>x<\/code>\u5728\u6570\u7ec4\u4e2d\u7684\u4e0b\u6807\uff0c<code>x % 64<\/code>\u5c31\u80fd\u5f97\u5230<code>x<\/code>\u5728\u6b64\u4e0b\u6807\u7684\u54ea\u4e2a\u4f4d\u3002\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4e0b\u6807<code>words[0]<\/code>\u53ef\u4ee5\u8868\u793a\u6570\u503c<code>0~63<\/code>\uff0c\u7b2c\u4e8c\u4e2a\u4e0b\u6807<code>words[1]<\/code>\u53ef\u4ee5\u8868\u793a\u6570\u503c<code>64~127<\/code>\uff0c\u4e4b\u540e\u4f9d\u6b64\u7c7b\u63a8\u3002<\/p>\n<p>\u5982\u679c\u5c06 3, 4, 6 \u51e0\u4e2a\u6570\u503c\u5b58\u5165\u4f4d\u56fe\uff0c\u5219\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5bf9\u5e94\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4e0b\u6807\u7684 3, 4, 6 \u4f4d\u88ab\u6807\u8bb0\u4e3a1\uff0c\u5176\u4ed6\u4f4d\u5747\u4e3a0\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639080\" alt=\"\u4f4d\u56fe\" title=\"\u4f4d\u56fe\" loading=\"lazy\"><\/p>\n<p>\u5bf9\u4e8e\u6dfb\u52a0\u64cd\u4f5c\uff0c\u5047\u8bbe\u8981\u6dfb\u52a0\u6570\u503c<code>2<\/code>\uff0c\u53ef\u4ee5\u8ba1\u7b97\u51fa\u5176\u5728\u6570\u7ec4\u4e2d\u7684\u4e0b\u6807\u4e3a<code>2 \/ 64<\/code>\u5373<code>0<\/code>\uff0c\u5728<code>words[0]<\/code>\u7684\u4f4d\u7f6e\u4e3a<code>2 % 64<\/code>\u5373<code>2<\/code>\uff0c\u53ea\u9700\u5c06<code>1<\/code>\u6309\u4f4d\u5de6\u79fb<code>2<\/code>\u4f4d\uff0c\u7136\u540e\u548c<code>words[0]<\/code>\u8fdb\u884c\u6309\u4f4d\u6216\u64cd\u4f5c\uff0c\u5c06\u76f8\u5e94\u4f4d\u7f6e\u7f6e\u4e3a<code>1<\/code>\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639081\" alt=\"\u4f4d\u56fe\u6dfb\u52a0\u6210\u5458\" title=\"\u4f4d\u56fe\u6dfb\u52a0\u6210\u5458\" loading=\"lazy\"><\/p>\n<p>\u5bf9\u4e8e\u79fb\u9664\u64cd\u4f5c\uff0c\u5047\u8bbe\u8981\u79fb\u9664\u521a\u6dfb\u52a0\u7684\u6570\u503c<code>2<\/code>\uff0c\u548c\u6dfb\u52a0\u64cd\u4f5c\u4e00\u6837\uff0c\u53ef\u4ee5\u901a\u8fc7\u8ba1\u7b97\u5f97\u5230\u5176\u5728\u6570\u7ec4\u7684\u4e0b\u6807\u4e3a<code>0<\/code>, \u5728<code>words[0]<\/code>\u7684\u4f4d\u7f6e\u4e3a<code>2<\/code>\uff0c\u53ea\u9700\u5c06<code>1<\/code>\u6309\u4f4d\u5de6\u79fb<code>2<\/code>\u4f4d\u518d\u6309\u4f4d\u53d6\u53cd\uff0c\u7136\u540e\u548c<code>words[0]<\/code>\u8fdb\u884c\u6309\u4f4d\u4e0e\u64cd\u4f5c\uff0c\u5c06\u76f8\u5e94\u4f4d\u7f6e\u7f6e\u4e3a<code>0<\/code>\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639082\" alt=\"\u4f4d\u56fe\u79fb\u9664\u6210\u5458\" title=\"\u4f4d\u56fe\u79fb\u9664\u6210\u5458\" loading=\"lazy\"><\/p>\n<p>\u800c\u5bf9\u4e8e\u67e5\u627e\u64cd\u4f5c\uff0c\u5047\u8bbe\u8981\u67e5\u627e\u6570\u503c<code>3<\/code>\uff0c\u53ef\u4ee5\u8ba1\u7b97\u5f97\u5230\u5176\u5728\u6570\u7ec4\u7684\u4e0b\u6807\u4e3a<code>0<\/code>, \u5728<code>words[0]<\/code>\u7684\u4f4d\u7f6e\u4e3a<code>3<\/code>\uff0c\u53ea\u9700\u5c06<code>1<\/code>\u6309\u4f4d\u5de6\u79fb<code>3<\/code>\u4f4d\uff0c\u7136\u540e\u548c<code>words[0]<\/code>\u6309\u4f4d\u4e0e\u64cd\u4f5c\u4e0d\u7b49\u4e8e<code>0<\/code>\u5373\u53ef\u5224\u65ad\u6570\u503c\u662f\u5426\u5b58\u5728\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639083\" alt=\"\u4f4d\u56fe\u67e5\u8be2\u6210\u5458\" title=\"\u4f4d\u56fe\u67e5\u8be2\u6210\u5458\" loading=\"lazy\"><\/p>\n<p>\u4ee5\u4e0a\u5185\u5bb9\u7b80\u5355\u4ecb\u7ecd\u4e86 Java \u4e2d\u7684<code>BitSet<\/code>\u7684\u5b9e\u73b0\u539f\u7406\uff0c\u5b9e\u9645\u4ee3\u7801\u8fd8\u4f1a\u7a0d\u5fae\u590d\u6742\u4e00\u4e9b\uff0c\u6bd4\u5982\u4f1a\u6d89\u53ca\u5230\u6570\u7ec4\u6269\u5bb9\uff0c\u8303\u56f4\u8fb9\u754c\u7684\u68c0\u6d4b\u7b49\u7b49\u3002\u6709\u610f\u601d\u7684\u662f<code>BitSet<\/code>\u4e2d\u8ba1\u7b97\u6570\u7ec4\u4e0b\u6807\u548c\u4f4d\u7f6e\u5e76\u6ca1\u6709\u4f7f\u7528\u9664\u6cd5\u548c\u53d6\u6a21\uff0c\u90fd\u662f\u901a\u8fc7\u4f4d\u79fb\u64cd\u4f5c\u5b9e\u73b0\u7684\uff0c<code>x \/ 64<\/code>\u662f\u901a\u8fc7\u53f3\u79fb\u64cd\u4f5c<code>x &gt;&gt; 6<\/code>\uff0c<code>1<\/code>\u6309\u4f4d\u5de6\u79fb<code>x % 64<\/code>\u4f4d\u662f\u76f4\u63a5\u5c06<code>1<\/code>\u5de6\u79fb<code>x<\/code>\u4f4d\u5373<code>1 &lt;&lt; x<\/code>\u3002<\/p>\n<p>\u4f4d\u56fe\u5bf9\u8c61\u8fd8\u652f\u6301\u4e00\u4e9b\u5e38\u7528\u7684\u4f4d\u8fd0\u7b97\uff0c\u5982\u6c42\u4ea4\u96c6(<code>and<\/code>, \u6309\u4f4d\u4e0e\u64cd\u4f5c)\uff0c\u6c42\u5e76\u96c6(<code>or<\/code>, \u6309\u4f4d\u6216\u64cd\u4f5c)\uff0c\u6c42\u5dee\u96c6(<code>andNot<\/code>, \u6309\u4f4d\u4e0e\u975e\u64cd\u4f5c)\u3002<\/p>\n<p>\u4f4d\u56fe\u975e\u5e38\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\uff0c\u4f4d\u64cd\u4f5c\u4e5f\u975e\u5e38\u9ad8\u6548\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u5f15\u5165\u4f4d\u56fe\u8fc7\u6ee4\u9ed1\u540d\u5355\u80fd\u5728\u6beb\u79d2\u7ea7\u522b\u5904\u7406\u5b8c\u6210\u7684\u539f\u56e0\u3002<\/p>\n<h3>RoaringBitmap<\/h3>\n<p>\u9057\u61be\u7684\u662f\uff0c<code>BitSet<\/code>\u4f1a\u5360\u7528\u8fc7\u591a\u5185\u5b58\u3002\u5982\u679c<code>BitSet<\/code>\u4e2d\u53ea\u5b58\u50a8\u4e00\u4e2a\u6570\u503c<code>200000000<\/code>\uff0c\u901a\u8fc7GraphLayout\u53d1\u73b0<code>BitSet<\/code>\u4f1a\u5360\u7528\u7ea623MB\u5185\u5b58\uff0c\u8fd9\u79cd\u60c5\u51b5\u5bf9\u7a7a\u95f4\u7684\u6d6a\u8d39\u6781\u5176\u4e25\u91cd\u3002\u4e3a\u4e86\u5f25\u8865\u8fd9\u4e00\u7f3a\u9677\uff0c\u901a\u5e38\u4f7f\u7528\u538b\u7f29\u4f4d\u56fe\u3002<\/p>\n<p><code>RoaringBitmap<\/code>\u662f\u4e00\u79cd\u538b\u7f29\u4f4d\u56fe\uff0c\u5176\u6027\u80fd\u5f80\u5f80\u4f18\u4e8e<code>WAH<\/code>\u3001<code>EWAH<\/code>\u6216<code>Concise<\/code>\u7b49\u4f20\u7edf\u538b\u7f29\u4f4d\u56fe\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c<code>RoaringBitmap<\/code>\u7684\u901f\u5ea6\u53ef\u4ee5\u5feb\u4e0a\u6570\u767e\u500d\uff0c\u800c\u4e14\u538b\u7f29\u6548\u679c\u5f80\u5f80\u8981\u597d\u5f97\u591a\u3002\u5b83\u4eec\u751a\u81f3\u6bd4\u672a\u538b\u7f29\u7684\u4f4d\u56fe\u66f4\u5feb\u3002\u5982\u679c\u4f7f\u7528<code>RoaringBitmap<\/code>\u53ea\u5b58\u50a8\u4e00\u4e2a\u6570\u503c<code>200000000<\/code>\uff0c\u53ea\u9700\u8981144B\u7684\u5185\u5b58\u3002<\/p>\n<p><code>RoaringBitmap<\/code>\u5c06\u4e00\u4e2a<code>int<\/code>\u6570\u503c<code>x<\/code>\u5212\u5206\u4e3a\u9ad816\u4f4d\u548c\u4f4e16\u4f4d\uff0c\u9ad816\u4f4d\u4e0b\u6807\u53ef\u4ee5\u901a\u8fc7<code>x &gt;&gt;&gt; 16<\/code>\u5f97\u5230\uff0c\u9ad8\u4f4dcontainer\u4e2d\u7ef4\u62a4\u4e86\u4e00\u4e2a\u6570\u7ec4\uff0c\u6570\u7ec4\u7684\u5143\u7d20\u4e2d\u5b58\u50a8\u4e86\u4f4e\u4f4dcontainer\uff0c\u4f4e\u4f4dcontainer\u4e2d\u7684\u5143\u7d20\u6570\u91cf\u672a\u8fbe\u52304096\u65f6\uff0c\u4f7f\u7528<code>ArrayContainer<\/code>\u5b58\u50a8\uff0c\u5176\u5185\u90e8\u5b9e\u73b0\u662f\u4e00\u4e2a<code>char<\/code>\u6570\u7ec4\uff0c\u6570\u7ec4\u4e2d\u5b58\u653e\u4f4e\u4f4d\u6570\u503c\uff0c\u8fbe\u52304096\u540e\u4f4e\u4f4dcontainer\u4f1a\u8f6c\u6362\u4e3a<code>BitmapContainer<\/code>\uff0c\u5176\u5185\u90e8\u5b9e\u73b0\u5c31\u662f\u4e00\u4e2a\u4f4d\u56fe\u3002\u6b64\u5916\u8fd8\u6709\u4e00\u4e2a<code>RunContainer<\/code>\u7684\u5b9e\u73b0\uff0c\u4e0d\u8fc7\u8f83\u5c11\u4f7f\u7528\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639084\" alt=\"RoaringBitmap\" title=\"RoaringBitmap\" loading=\"lazy\"><\/p>\n<p>\u4e3a\u4ec0\u4e48\u8981\u4f7f\u75284096\u8fd9\u4e2a\u9608\u503c\u5462\uff1f\u662f\u56e0\u4e3a\u8d85\u8fc74096\u540e\uff0c<code>BitmapContainer<\/code>\u4f1a\u6bd4<code>ArrayContainer<\/code>\u66f4\u8282\u7701\u7a7a\u95f4\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044639085\" alt=\"container\" title=\"container\" loading=\"lazy\"><\/p>\n<p>\u5b58\u50a8<code>long<\/code>\u578b\u6570\u503c\u65f6\u53ef\u4ee5\u4f7f\u7528<code>Roaring64NavigableMap<\/code>\uff0c\u533a\u522b\u662f\u5b83\u4f1a\u5c06\u6570\u503c\u5206\u4e3a\u9ad832\u4f4d\u548c\u4f4e32\u4f4d\u3002CDP\u5b58\u50a8\u4eba\u7fa4\u7684\u4f4d\u56fe\u5c31\u662f\u57fa\u4e8e<code>Roaring64NavigableMap<\/code>\u5b9e\u73b0\u7684\u3002<\/p>\n<h2>\u4f4d\u56fe\u7684\u5e94\u7528\u573a\u666f<\/h2>\n<p>\u4f4d\u56fe\u53ef\u4ee5\u7528\u8f83\u5c11\u7684\u5185\u5b58\u6765\u8868\u793a\u5927\u89c4\u6a21\u7684\u5e03\u5c14\u503c\u96c6\u5408\uff0c\u8282\u7701\u5185\u5b58\u7a7a\u95f4\uff0c\u5e76\u4e14\u652f\u6301\u9ad8\u6548\u7684\u4f4d\u64cd\u4f5c\uff0c\u5982<code>AND<\/code>\u3001<code>OR<\/code>\u3001<code>XOR<\/code>\u7b49\uff0c\u4f7f\u5f97\u5bf9\u96c6\u5408\u8fdb\u884c\u590d\u6742\u64cd\u4f5c\u53d8\u5f97\u7b80\u5355\u9ad8\u6548\uff0c\u5bf9\u4e8e\u5b58\u5728\u6027\u67e5\u8be2\uff0c\u4f4d\u56fe\u53ef\u4ee5\u5728\u5e38\u6570\u65f6\u95f4\u5185\u5b8c\u6210\uff0c\u5177\u6709\u9ad8\u6548\u7684\u67e5\u8be2\u6027\u80fd\u3002\u4e00\u4e9b\u9762\u8bd5\u9898\u4e2d\u51fa\u73b0\u7684\u51e0\u5341\u4ebf\u6570\u636e\u7684\u53bb\u91cd\u3001\u6392\u5e8f\u3001\u8ba1\u6570\u6216\u8005\u6210\u5458\u67e5\u8be2\u7b49\u95ee\u9898\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7\u4f4d\u56fe\u89e3\u51b3\uff0c\u6b64\u5916\u8fd8\u6709\u5f88\u591a\u573a\u666f\u5e94\u7528\u5230\u4e86\u4f4d\u56fe\u3002<\/p>\n<h3>Java \u4e2d\u7684\u4f4d\u56fe\u5e94\u7528<\/h3>\n<p><code>ArrayList<\/code>\u4e3a\u4e86\u63d0\u5347\u6027\u80fd\u5e76\u8282\u7701\u7a7a\u95f4\uff0c\u91cd\u5199\u4e86<code>Collection<\/code>\u63a5\u53e3\u9ed8\u8ba4\u7684<code>removeIf<\/code>\u65b9\u6cd5\uff0c\u91cd\u5199\u540e\u7684\u65b9\u6cd5\u4f7f\u7528\u4e86\u4f4d\u56fe\uff0c\u9996\u5148\u904d\u5386\u4e00\u904d\u5143\u7d20\u7528\u4f4d\u56fe\u6807\u8bb0\u5f85\u5220\u9664\u7684\u5143\u7d20\u4f4d\u7f6e\uff0c\u7136\u540e\u904d\u5386\u7b2c\u4e8c\u904d\u624d\u771f\u6b63\u5220\u9664\u5143\u7d20\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u53ef\u4ee5\u9ad8\u6548\u79fb\u9664\u5143\u7d20\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u6570\u7ec4\u590d\u5236\u548c\u5143\u7d20\u79fb\u52a8\u6b21\u6570\uff0c\u5e76\u4e14\u4f7f\u7528\u4f4d\u56fe\u6807\u8bb0\u5f85\u5220\u9664\u4f4d\u7f6e\u4e5f\u6ca1\u6709\u8fc7\u591a\u6d6a\u8d39\u7a7a\u95f4\u3002<\/p>\n<h3>\u4f4d\u56fe\u7d22\u5f15<\/h3>\n<p>\u4f4d\u56fe\u7d22\u5f15\u662f\u4e00\u79cd\u7279\u522b\u9002\u5408\u4e8e\u5904\u7406\u5177\u6709\u8f83\u5c11\u552f\u4e00\u503c\u7684\u5217\uff08\u4f8b\u5982\u6027\u522b\u3001\u5a5a\u59fb\u72b6\u51b5\u7b49\uff09\u67e5\u8be2\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5728\u6570\u636e\u4ed3\u5e93\u7b49\u573a\u5408\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u73af\u5883\u901a\u5e38\u5305\u542b\u5927\u91cf\u7684\u6570\u636e\u8bfb\u53d6\u64cd\u4f5c\u548c\u590d\u6742\u7684\u5e03\u5c14\u903b\u8f91\u67e5\u8be2\uff0c\u540c\u65f6\u6570\u636e\u66f4\u65b0\u7684\u9891\u7387\u76f8\u5bf9\u8f83\u4f4e\u3002\u4f4d\u56fe\u7d22\u5f15\u901a\u8fc7\u5c06\u5217\u503c\u6620\u5c04\u5230\u4f4d\u4e0a\uff0c\u5e76\u5229\u7528\u4f4d\u8fd0\u7b97\u6765\u5feb\u901f\u5b8c\u6210\u67e5\u8be2\uff0c\u80fd\u591f\u6709\u6548\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0c\u4f46\u5b83\u4e0d\u9002\u5408\u90a3\u4e9b\u5177\u6709\u9ad8\u57fa\u6570\u503c\u548c\u9891\u7e41\u66f4\u65b0\u7684\u573a\u666f\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u573a\u666f\u4e0b\u4f4d\u56fe\u7d22\u5f15\u4f1a\u5360\u7528\u5927\u91cf\u7a7a\u95f4\u5e76\u4e14\u66f4\u65b0\u6210\u672c\u5f88\u9ad8\u3002<\/p>\n<h3>Redis 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008368","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008368","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"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008368"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008368\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}