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href=\"https:\/\/link.segmentfault.com\/?enc=vg71mmImAMUvJZg1adyNZQ%3D%3D.dmsf%2B87ZPXQ9FcSrgZlR%2FamZyehB2S72liB2kzUQr2MM0IW7Ae62TmvY79wyvL4Vjhk8Hjqczg%2Bl9ha4bfPxoRA6ByXztl2vAyeZB1PviMxzRBGkkRvfCkD9%2FGkqKay%2ByznTfjLUkC43ZT55iXDXxuVFB1V4J41htO6IripoCeY%3D\" 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href=\"https:\/\/link.segmentfault.com\/?enc=TLs0s9OgBCfDcwU%2BXEhzsg%3D%3D.NhfQ9jApxhN2KKfYPZdve%2Bu8StFTqiZ7JGa%2BhY1ZTpAYzW19KAkRgdK6aFoQ2SPDcvMPD%2FjQ0GUJ%2BY9qWQUscl4jWfIesIAg%2BRQYs9npcFxAvn5sbYLz8%2FKyavgQYDXpoLQDHhBTC6jA1qmY3dThO7johkXrAOC1O238qRpi5nOgwtNoJJZ0BcOA6XU%2Bwwi22rktEuGXxOl9sPnHoshXIg%3D%3D\" rel=\"nofollow\">https:\/\/github.com\/ApsaraDB\/g&#8230;<\/a>\u3002\u7c7b\u4f3c\u8fd9\u6837\u7684\u5de5\u4f5c\u8fd8\u6709\u5f88\u591a\uff0c\u4f8b\u5982\u7c7b\u578b\u7cfb\u7edf\uff08<a href=\"https:\/\/link.segmentfault.com\/?enc=aIjeM3lgADXF1IgrHxLlPQ%3D%3D.PIMgTZ5yI0EUTHo6mKNUJeUpgHcE2d31%2BenQ2pfU03IGv3x0u%2Beu%2BxbKradoKDCJ\" 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Clustering\u274c\u274c\u274c\u2705\u7b97\u5b50\u4ea4\u6362TopN-Join\u2705\u2705\u2705\u2705Agg-Join\u274c\u274c\u2705\u2705\u56de\u8868\u7b97\u5b50\u274c\u274c\u274c\u2705Collocated push down\u274c\u274c\u2705\u2705\u5206\u533a\u88c1\u526a\u6761\u4ef6\u6536\u96c6Predicate push downPredicate push downPredicate push downPredicate Move-Round\u00a0\u63a8\u591a\u4e86\u4f1a\u5bfc\u81f4\u7ed3\u679c\u9519\u8bef\uff0c\u63a8\u5c11\u4e86\u4f1a\u8fbe\u4e0d\u5230\u6700\u4f73\u6027\u80fd\u3002DRDS\u7684\u4f18\u5316\u5668\u79ef\u7d2f\u4e86\u5927\u91cf\u4e0b\u63a8\u4f18\u5316\u7b56\u7565\u3002\u8fd9\u4e9b\u4f18\u5316\u7b56\u7565\u5927\u591a\u662f\u6ca1\u6709\u529e\u6cd5\u51ed\u7a7a\u60f3\u8c61\u51fa\u6765\u7684\uff0c\u53ea\u6709\u901a\u8fc7\u5b9e\u9645\u7684\u573a\u666f\u6848\u4f8b\uff0c\u624d\u80fd\u5f97\u5230\u79ef\u7d2f\u3002\u8be6\u89c1\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=k0js1vixYo2zXDxmIbFRTA%3D%3D.1QxJp7dEquLq6WZ8jb3HDxfInOHuAJpcR7d38vupIyFrYUYl7sV71WhMMYAfpEd%2B\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u3002\u7269\u7406\u7b97\u5b50\u7684\u4e30\u5bcc\u4e0eMPP\u7684\u6267\u884c\u5f15\u64ce\u7269\u7406\u7b97\u5b50\u4e5f\u5c31\u662f\u6307\u6267\u884c\u5668\u7684\u5404\u79cd\u7b97\u6cd5\uff0c\u4f8b\u5982\u5bf9\u4e8eJoin\uff0c\u6211\u4eec\u652f\u6301HybridHashJoin\u3001LookupJoin\u3001NestedLoopJoin\u3001SortMergeJoin\u3001MaterializedSemiJoin\u7b49\u7b49\u7b97\u6cd5\u3002DRDS\u6700\u521d\u4ec5\u652f\u6301\u5355\u7ebf\u7a0b\u53bb\u6267\u884cSQL\uff0c\u4f46\u8fd9\u79cd\u6267\u884c\u5bf9\u590d\u6742\u7684SQL\u662f\u4e0d\u591f\u7528\u7684\u3002\u6211\u4eec\u5148\u505a\u4e86\u5355\u673a\u5e76\u884c\u5f15\u64ce\uff08SMP\uff09\uff0c\u53c8\u53d1\u5c55\u5230\u4e86\u73b0\u5728\u7684MPP\u5f15\u64ce\uff0c<a href=\"https:\/\/link.segmentfault.com\/?enc=FXIlQwgXaUe5ywozp7mwmA%3D%3D.UdzGjBkYw%2FQTiM4zLTvjYUT8fUyHwc9i1Mbd2kTwon%2Bl2w660IuxC5GSBlzDA3Fe\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u3002\u540c\u65f6\uff0c\u6267\u884c\u5f15\u64ce\u8fd8\u652f\u6301spill out\uff08\u4e2d\u95f4\u7ed3\u679c\u843d\u76d8\u7684\u80fd\u529b\uff09\uff0c\u5373\u4f7f\u53ea\u670915M\u5185\u5b58\uff0c\u4e5f\u80fd\u8dd1\u901aTPCH 1G\u7684\u6d4b\u8bd5\uff0c\u8be6\u89c1\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=VO4GGPC6%2BEiT6iro7wMACw%3D%3D.zzsCjTK4M8JeP2SdVftQuYQYDxtM4MgQoK55JDrgmSL21dfY6cHTlyp9P6dglD3F\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u3002\u8fd9\u4e9b\u80fd\u529b\u7684\u79ef\u7d2f\u4e0e\u7a81\u7834\uff0c\u6781\u5927\u7684\u63d0\u5347\u4e86PolarDB-X\u5728\u9762\u5bf9\u590d\u6742\u7684SQL\u7684\u8ba1\u7b97\u80fd\u529b\u3002\u574e\u5777\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u662f\u7ed5\u4e0d\u5f00\u7684\u4e00\u4e2a\u95ee\u9898\u3002\u5bf9\u4e8e\u4e2d\u95f4\u4ef6\u7c7b\u578b\u7684\u4ea7\u54c1\u6765\u8bf4\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u5f88\u57fa\u672c\u7684\u5047\u8bbe\uff1a\u4f7f\u7528\u6807\u51c6\u7684MySQL\uff0c\u907f\u514d\u5bf9MySQL\u505a\u4fb5\u5165\u6027\u7684\u4fee\u6539\uff1b\u5373\u4f7f\u4fee\u6539\uff0c\u4e5f\u5e94\u8be5\u662f\u63d2\u4ef6\u5316\u7684\u3002\u4e0d\u4fee\u6539MySQL\uff0c\u8fd9\u5bfc\u81f4\u6211\u4eec\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\u90fd\u6ca1\u6709\u5f88\u597d\u7684\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u3002\u6211\u4eec\u524d\u524d\u540e\u540e\u8d70\u8fc7\u7684\u4e00\u4e9b\u5f2f\u8def\uff1a\u50cf\u4f20\u7edf\u4e2d\u95f4\u4ef6\u4e00\u6837\uff0c\u7981\u6b62\u5206\u5e03\u5f0f\u4e8b\u52a1\u3002\u4f46\u8fd9\u4e2a\u5bf9\u5e94\u7528\u7684\u6539\u9020\u6210\u672c\u592a\u9ad8\u4e86\u3002\u4f7f\u7528\u67d4\u6027\u4e8b\u52a1\uff0c\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\u6211\u4eec\u4f7f\u7528GTS\uff08\u539f\u540dTXC\uff09\u8fd9\u6837\u7684\u7b2c\u4e09\u65b9\u7ec4\u4ef6\u6765\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u3002\u8fd9\u79cd\u65b9\u6848\u9700\u8981\u5bf9\u4e0d\u540c\u7684SQL\u6839\u636e\u8bed\u4e49\u6765\u5b9e\u73b0\u56de\u6eda\u8bed\u53e5\uff0cSQL\u517c\u5bb9\u6027\u5f88\u5dee\u3002\u4f7f\u7528GTM\u7684\u65b9\u6848\u3002GTM\u672c\u8d28\u662f\u4e00\u4e2a\u5355\u70b9\uff0c\u5e76\u4e14GTM\u4e0eCoordinator\u4e4b\u95f4\u8981\u505a\u5927\u91cf\u7684\u6570\u636e\u4ea4\u4e92\uff0c\u6027\u80fd\u592a\u5dee\uff0c\u4e0d\u53ef\u80fd\u4f5c\u4e3a\u4e00\u4e2a\u9ed8\u8ba4\u4f7f\u7528\u7684\u4e8b\u52a1\u7b56\u7565\u3002\u6240\u4ee5\u6211\u4eec\u770b\u4f7f\u7528GTM\u65b9\u6848\u7684\u201c\u6570\u636e\u5e93\u201d\uff0c\u5b83\u4e00\u5b9a\u6709\u5f88\u4e25\u82db\u7684\u4f7f\u7528\u6761\u4ef6\uff08\u4f8b\u5982\u8981\u6c42\u5e94\u7528\u5c3d\u91cf\u907f\u514d\u5206\u5e03\u5f0f\u4e8b\u52a1\u3001\u9ed8\u8ba4\u5173\u95ed\u5f3a\u4e00\u81f4\u7b49\uff09\u3002XA\u4e8b\u52a1\uff0c\u65e9\u671f\u7684MySQL\u5bf9XA\u652f\u6301\u7684\u5f88\u5f31\uff0cBUG\u5f88\u591a\uff08\u5b9e\u9645\u4e0a\u73b0\u5728\u7684MySQL\u5bf9\u4e8eXA\u7684BUG\u4f9d\u7136\u5f88\u591a\uff09\uff0c\u4f8b\u5982\u5b95\u673a\u6062\u590d\u6d41\u7a0b\u5f88\u5bb9\u6613\u56e0\u4e3aXA\u6302\u6389\u3002\u5e76\u4e14XA\u4e8b\u52a1\u65e0\u6cd5\u89e3\u51b3\u8bfb\u7684\u53ef\u89c1\u6027\u95ee\u9898\uff0c\u4e0e\u5355\u673a\u4e8b\u52a1\u7684\u884c\u4e3a\u4e0d\u517c\u5bb9\u3002\u4e8b\u52a1\u7cfb\u7edf\u662f\u4e00\u4e2a\u4e0e\u5b58\u50a8\u5c42\u5bc6\u5207\u76f8\u5173\u7684\u4e8b\u60c5\uff0c\u4ecePolarDB-X\u7684\u63a2\u7d22\u6765\u770b\uff0c\u4e0d\u5bf9MySQL\u505a\u6df1\u5ea6\u4fee\u6539\uff0c\u662f\u4e0d\u53ef\u80fd\u505a\u51fa\u6027\u80fd\u3001\u529f\u80fd\u90fd\u7b26\u5408\u8981\u6c42\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u3002\u8fd9\u662f\u6240\u6709\u4e2d\u95f4\u4ef6\u7c7b\u4ea7\u54c1\u90fd\u65e0\u6cd5\u89e3\u51b3\u7684\u95ee\u9898\uff0c\u4e5f\u662f\u4e2d\u95f4\u4ef6\u4e0e\u6570\u636e\u5e93\u6839\u672c\u6027\u7684\u5dee\u5f02\u3002\u7ed5\u4e0d\u5f00\u7684\u5206\u533a\u952e\u4eceDRDS\u7684\u7b2c\u4e00\u4e2a\u7528\u6237\u5f00\u59cb\uff0c\u5c31\u4e00\u76f4\u8981\u56de\u7b54\u4e00\u4e2a\u95ee\u9898\uff0c\u6211\u7684\u8868\u600e\u4e48\u9009\u5206\u533a\u952e\uff1f\u4ece\u505a\u201c\u9ad8\u541e\u5410\u201d\u3001\u201c\u9ad8\u5e76\u53d1\u201d\u7684\u4e1a\u52a1\u7cfb\u7edf\u89d2\u5ea6\u6765\u770b\uff0c\u8981\u6c42\u8868\u548cSQL\u5e26\u4e0a\u6709\u4e1a\u52a1\u7279\u5f81\u7684\u5206\u533a\u952e\u662f\u975e\u5e38\u5408\u7406\u7684\u4e00\u4ef6\u4e8b\u60c5\u3002\u5168\u90e8\u4e0b\u63a8\u5230\u5b58\u50a8\u5c42\uff0c\u907f\u514d\u4ea7\u751f\u8de8\u673a\u7684\u67e5\u8be2\u3001\u4e8b\u52a1\uff0c\u505a\u5230\u8fd9\u4e9b\u624d\u80fd\u4fdd\u8bc1\u505a\u5230\u6700\u4f73\u7684\u6027\u80fd\uff0c\u8fd9\u662f\u6027\u80fd\u7684\u5929\u82b1\u677f\u3002\u95ee\u9898\u662f\uff0c\u867d\u7136\u8fd9\u6837\u505a\u4e0a\u9650\u5f88\u9ad8\uff08\u9ad8\u5230\u6dd8\u5b9d\u53cc\u5341\u4e000\u70b9\u7684\u4e1a\u52a1\u9ad8\u5cf0\u4e5f\u53ef\u4ee5\u5f88\u4e1d\u6ed1\uff09\uff0c\u4f46\uff1a\u8fd9\u79cd\u6539\u9020\u6210\u672c\u662f\u975e\u5e38\u9ad8\u7684\uff0c\u5f88\u591a\u65f6\u5019\u5206\u533a\u952e\u662f\u5f88\u96be\u9009\u7684\u3002\u4f8b\u5982\u5f88\u591a\u7535\u5546\u7cfb\u7edf\u7684\u8ba2\u5355\u8868\u4f1a\u6709\u4e24\u4e2a\u67e5\u8be2\u7ef4\u5ea6\uff0c\u5356\u5bb6\u548c\u4e70\u5bb6\uff0c\u9009\u54ea\u4e2a\u5f53\u5206\u533a\u952e\u4e0d\u662f\u6240\u6709\u7684\u4e1a\u52a1\u7cfb\u7edf\uff08\u6216\u8005\u8bf4\u4e0d\u662f\u6240\u6709\u7684\u8868\u548cSQL\uff09\u90fd\u503c\u5f97\u82b1\u8fd9\u4e48\u5927\u7684\u4ee3\u4ef7\u53bb\u6539\u9020\u7684\uff0c\u53ea\u6709\u6838\u5fc3\u7cfb\u7edf\u4e2d\u7684\u6838\u5fc3\u903b\u8f91\u624d\u9700\u8981\u505a\u8fd9\u79cd\u7ec6\u81f4\u7684\u6539\u9020\u62c6\u5206\u952e\u9009\u9519\u4e86\uff0c\u4f1a\u5bfc\u81f4\u4e0b\u9650\u6781\u4f4e\u3002\u5bf9\u4e8e\u6570\u636e\u5e93\u6765\u8bf4\uff0c\u63d0\u4f9b\u6bd4\u8f83\u9ad8\u7684\u4e0a\u9650\u548c\u63d0\u4f9b\u4e0d\u592a\u4f4e\u7684\u4e0b\u9650\u540c\u6837\u91cd\u8981\u3002\u00a0\u81ea\u7136\uff0c\u6211\u4eec\u60f3\u77e5\u9053\uff0c\u4ec0\u4e48\u6837\u7684\u6280\u672f\uff0c\u624d\u80fd\u8ba9\u4f60\u201c\u5fd8\u6389\u201d\u5206\u533a\u952e\u8fd9\u4e2a\u4e1c\u897f\u5462\u3002\u6570\u636e\u5e93\u65f6\u4ee3\uff082019~\uff09\u900f\u660e\u5206\u5e03\u5f0f\u4e4b\u8def\u662f\u5426\u9700\u8981\u5f3a\u5236\u5e94\u7528\u5728\u610f\u5206\u533a\u952e\u7684\u6982\u5ff5\uff0c\u662f\u4e2d\u95f4\u4ef6\u4e0e\u6570\u636e\u5e93\u7684\u5173\u952e\u6027\u533a\u522b\u4e4b\u4e00\u3002\u5206\u533a\u952e\u4e0e\u5168\u5c40\u7d22\u5f15\u5e7f\u4e49\u7684\u201c\u5206\u533a\u952e\u201d\u7684\u6982\u5ff5\uff0c\u5176\u5b9e\u5e76\u4e0d\u662f\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7279\u6709\u7684\u3002\u6211\u4eec\u5728\u5355\u673a\u6570\u636e\u5e93\u4e2d\uff0c\u4f8b\u5982MySQL\u4e2d\uff0c\u6570\u636e\u5b58\u50a8\u6210\u4e86\u4e00\u68f5\u4e00\u68f5B\u6811\u3002\u5982\u679c\u4e00\u4e2a\u8868\u53ea\u6709\u4e3b\u952e\uff0c\u90a3\u5b83\u53ea\u6709\u4e00\u68f5B\u6811\uff0c\u4f8b\u5982\uff1aCREATE TABLE t1(\u00a0 \u00a0id INT,\u00a0 \u00a0name CHAR(32),\u00a0 \u00a0addr TEXT,\u00a0 \u00a0PRIMARY KEY (id))\u00a0\u8fd9\u4e2a\u8868\u552f\u4e00\u7684B\u6811\u662f\u6309\u7167\u4e3b\u952e\uff08id\uff09\u8fdb\u884c\u6392\u5e8f\u7684\u3002\u5982\u679c\u6211\u4eec\u7684\u67e5\u8be2\u6761\u4ef6\u4e2d\u5e26\u4e86id\u7684\u7b49\u503c\u6761\u4ef6\u4f8b\u5982where id=14\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u5728\u8fd9\u68f5\u6811\u4e0a\u5feb\u901f\u7684\u5b9a\u4f4d\u5230\u8fd9\u4e2aid\u5bf9\u5e94\u7684\u8bb0\u5f55\u5728\u54ea\u91cc\uff1b\u53cd\u4e4b\uff0c\u5219\u8981\u8fdb\u884c\u5168\u8868\u626b\u63cf\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042501237\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>B\u6811\u7528\u4e8e\u6392\u5e8f\u7684Key\uff0c\u901a\u8fc7\u4e8c\u5206\u67e5\u627e\u53ef\u4ee5\u5b9a\u4f4d\u5230\u4e00\u4e2a\u53f6\u5b50\u8282\u70b9\uff1b\u5206\u533a\u952e\u901a\u8fc7\u54c8\u5e0c\u6216\u8005Range\u4e0a\u7684\u4e8c\u5206\u67e5\u627e\uff0c\u53ef\u4ee5\u5b9a\u4f4d\u5230\u4e00\u4e2a\u5206\u7247\u3002\u53ef\u4ee5\u770b\u51fa\u5b83\u4eec\u90fd\u662f\u4e3a\u4e86\u80fd\u5feb\u901f\u7684\u5b9a\u4f4d\u5230\u6570\u636e\u3002\u5982\u679c\u6211\u4eec\u8981\u5bf9\u4e0a\u9762\u7684\u8868\u505awhere name=&#8217;Megan&#8217;\u6765\u67e5\u8be2\uff0c\u5728MySQL\u4e2d\uff0c\u6211\u4eec\u5e76\u4e0d\u9700\u8981\u5c06name\u8bbe\u4e3a\u4e3b\u952e\u3002\u66f4\u52a0\u81ea\u7136\u7684\u65b9\u5f0f\u662f\uff0c\u5728name\u4e0a\u521b\u5efa\u4e00\u4e2a\u4e8c\u7ea7\u7d22\u5f15\uff1aCREATE INDEX idx ON t1(name)\u00a0\u6bcf\u4e2a\u4e8c\u7ea7\u7d22\u5f15\u5728MySQL\u4e2d\u90fd\u662f\u4e00\u68f5\u72ec\u7acb\u7684B Tree\uff0c\u5176\u7528\u4e8e\u6392\u5e8f\u7684Key\u5c31\u662f\u4e8c\u7ea7\u7d22\u5f15\u7684\u5217\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u524dt1\u8fd9\u5f20\u8868\uff0c\u6709\u4e24\u9897B Tree\u4e86\uff0c\u4e3b\u952e\u4e00\u68f5\uff0cidx\u4e00\u68f5\uff0c\u5206\u522b\u662f\uff1aid-&gt;name,addrname-&gt;id\u00a0\u5f53\u4f7f\u7528where name=&#8217;Megan&#8217;\u8fdb\u884c\u67e5\u8be2\u662f\uff0c\u4f1a\u5148\u8bbf\u95eeidx\u8fd9\u9897B\u6811\uff0c\u6839\u636ename=&#8217;Megan&#8217;\u5b9a\u4f4d\u5230\u53f6\u5b50\u8282\u70b9\uff0c\u83b7\u53d6\u5230id\u7684\u503c\uff0c\u518d\u4f7f\u7528id\u7684\u503c\u5230\u4e3b\u952e\u90a3\u9897B\u6811\u4e0a\uff0c\u627e\u5230\u5b8c\u6574\u7684\u8bb0\u5f55\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042501238\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4e8c\u7ea7\u7d22\u5f15\u5b9e\u9645\u4e0a\u662f\u901a\u8fc7\u5197\u4f59\u6570\u636e\uff0c\u4f7f\u7528\u7a7a\u95f4\u4e0e\u63d0\u5347\u5199\u5165\u7684\u6210\u672c\uff0c\u6362\u53d6\u4e86\u67e5\u8be2\u7684\u6027\u80fd\u3002\u540c\u65f6\uff0c\u4e8c\u7ea7\u7d22\u5f15\u7684\u7ef4\u62a4\u4ee3\u4ef7\u5e76\u4e0d\u662f\u975e\u5e38\u7684\u9ad8\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u53ef\u4ee5\u653e\u5fc3\u7684\u5728\u4e00\u4e2a\u8868\u4e0a\u521b\u5efa\u82e5\u5e72\u4e2a\u4e8c\u7ea7\u7d22\u5f15\u3002\u540c\u7406\uff0c\u5728\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u4e2d\uff0c\u60f3\u8ba9\u4f60\u201c\u5fd8\u6389\u201d\u5206\u533a\u952e\u8fd9\u4e2a\u4e1c\u897f\uff0c\u552f\u4e00\u7684\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528\u5206\u5e03\u5f0f\u4e8c\u7ea7\u7d22\u5f15\uff0c\u4e5f\u79f0\u4e3a\u5168\u5c40\u7d22\u5f15\uff08Global Index\uff09\u3002\u5e76\u4e14\u8fd9\u4e2a\u5168\u5c40\u7d22\u5f15\u9700\u8981\u505a\u5230\u9ad8\u6548\u3001\u5ec9\u4ef7\u3001\u4e0e\u4f20\u7edf\u4e8c\u7ea7\u7d22\u5f15\u7684\u517c\u5bb9\u5ea6\u9ad8\u3002\u5168\u5c40\u4e8c\u7ea7\u7d22\u5f15\u540c\u6837\u4e5f\u662f\u4e00\u79cd\u6570\u636e\u5197\u4f59\u3002\u4f8b\u5982\uff0c\u5f53\u6267\u884c\u4e00\u6761SQL\uff1aINSERT INTO t1 (id,name,addr) VALUES (1,&#8221;meng&#8221;,&#8221;hz&#8221;);\u5982\u679corders\u8868\u4e0a\u6709seller_id\u8fd9\u4e2a\u5168\u5c40\u4e8c\u7ea7\u7d22\u5f15\uff0c\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a\uff0c\u6211\u4eec\u4f1a\u5206\u522b\u5f80\u4e3b\u952e\u4e0eseller_id\u4e24\u4e2a\u5168\u5c40\u7d22\u5f15\u4e2d\u6267\u884c\u8fd9\u4e2ainsert\uff0c\u4e00\u5171\u5199\u5165\u4e24\u6761\u8bb0\u5f55\uff1aINSERT INTO t1 (id,name,addr) VALUES (1,&#8221;meng&#8221;,&#8221;hz&#8221;);INSERT INTO idx (id,name) VALUES (1,&#8221;meng&#8221;);\u5176\u4e2dt1\u4e3b\u952e\u7d22\u5f15\u7684\u5206\u533a\u952e\u662fid\uff0cidx\u7684\u5206\u533a\u952e\u662fname\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042501239\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br 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Key\u95ee\u9898\uff09\uff0c\u5355\u673a\u6570\u636e\u5e93\u4e2d\uff0c\u5982\u679c\u4e00\u4e2a\u7d22\u5f15\u9009\u62e9\u5ea6\u4e0d\u9ad8\uff08\u4f8b\u5982\u5728\u6027\u522b\u4e0a\u521b\u5efa\u4e86\u7d22\u5f15\uff09\uff0c\u9664\u4e86\u7a0d\u5fae\u6709\u4e9b\u6d6a\u8d39\u8d44\u6e90\u5916\uff0c\u4e0d\u4f1a\u6709\u4ec0\u4e48\u592a\u4e25\u91cd\u7684\u95ee\u9898\uff1b\u4f46\u662f\u5bf9\u4e8e\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff0c\u8fd9\u4e2a\u9009\u62e9\u5ea6\u4f4e\u7684\u7d22\u5f15\u4f1a\u53d8\u6210\u4e00\u4e2a\u70ed\u70b9\uff0c\u5bfc\u81f4\u6574\u4e2a\u96c6\u7fa4\u7684\u90e8\u5206\u70ed\u70b9\u8282\u70b9\u6210\u4e3a\u6574\u4e2a\u7cfb\u7edf\u7684\u74f6\u9888\u3002\u5168\u5c40\u7d22\u5f15\u9700\u8981\u6709\u76f8\u5e94\u7684\u65b9\u6cd5\u53bb\u89e3\u51b3\u6b64\u7c7b\u95ee\u9898\u3002\u7d22\u5f15\u7684\u521b\u5efa\u901f\u5ea6\uff0c\u7d22\u5f15\u56de\u8868\u7684\u6027\u80fd\uff0c\u7d22\u5f15\u7684\u529f\u80fd\u4e0a\u7684\u9650\u5236\uff0c\u805a\u7c07\u7d22\u5f15\uff0c\u7d22\u5f15\u7684\u5b58\u50a8\u6210\u672c\u7b49\u7b49\uff0c\u5176\u5b9e\u4e5f\u90fd\u6781\u5927\u7684\u5f71\u54cd\u4e86\u5168\u5c40\u7d22\u5f15\u7684\u4f7f\u7528\u4f53\u9a8c\uff0c\u8fd9\u91cc\u9274\u4e8e\u7bc7\u5e45\u539f\u56e0\uff0c\u5c31\u4e0d\u7ee7\u7eed\u5c55\u5f00\u4e86\u3002\u7d22\u5f15\u7684\u6570\u91cf\u5bf9\u5168\u5c40\u7d22\u5f15\u7684\u8fd9\u4e9b\u8981\u6c42\uff0c\u672c\u8d28\u6765\u6e90\u4e8e\u5168\u5c40\u7d22\u5f15\u7684\u6570\u91cf\u3002\u900f\u660e\u6027\u505a\u7684\u597d\u7684\u6570\u636e\u5e93\uff0c\u6240\u6709\u7d22\u5f15\u90fd\u4f1a\u662f\u5168\u5c40\u7d22\u5f15\uff0c\u5176\u5168\u5c40\u7d22\u5f15\u7684\u6570\u91cf\u4f1a\u975e\u5e38\u7684\u591a\uff08\u6b63\u5982\u5355\u673a\u6570\u636e\u5e93\u4e2d\u4e00\u4e2a\u8868\u4e00\u4e2a\u5e93\u7684\u4e8c\u7ea7\u7d22\u5f15\u6570\u91cf\u4e00\u6837\uff09\u3002\u6570\u91cf\u591a\u4e86\uff0c\u8981\u6c42\u624d\u4f1a\u53d8\u9ad8\u3002\u800c\uff0c\u8fd9\u4e9b\u6ca1\u6709\u5168\u505a\u597d\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff0c\u5373\u4f7f\u6709\u5168\u5c40\u7d22\u5f15\uff0c\u4f60\u4f1a\u53d1\u73b0\u5b83\u4eec\u7ed9\u51fa\u7684\u7528\u6cd5\u4f9d\u7136\u4f1a\u662f\u5f3a\u4f9d\u8d56\u5206\u533a\u952e\u7684\u7528\u6cd5\u3002\u5b83\u4eec\u4f1a\u8ba9\u521b\u5efa\u5168\u5c40\u7d22\u5f15\u8fd9\u4ef6\u4e8b\uff0c\u53d8\u6210\u4e00\u4e2a\u53ef\u9009\u7684\u3001\u7279\u522b\u7684\u4e8b\u60c5\u3002\u8fd9\u6837\u4e1a\u52a1\u5728\u4f7f\u7528\u5168\u5c40\u7d22\u5f15\u7684\u65f6\u5019\u4f1a\u53d8\u7684\u975e\u5e38\u614e\u91cd\u3002\u81ea\u7136\uff0c\u5168\u5c40\u7d22\u5f15\u7684\u6570\u91cf\u4f1a\u53d8\u6210\u7684\u975e\u5e38\u6709\u9650\u3002\u5f53\u5168\u5c40\u7d22\u5f15\u7684\u6570\u91cf\u4e0e\u4f7f\u7528\u573a\u666f\u88ab\u4e25\u683c\u9650\u5236\u4e4b\u540e\uff0c\u4e0a\u8ff0\u505a\u7684\u4e0d\u597d\u7684\u7f3a\u70b9\u4e5f\u5c31\u53d8\u5f97\u6ca1\u90a3\u4e48\u91cd\u8981\u4e86\u3002\u9762\u5411\u7d22\u5f15\u9009\u62e9\u7684\u67e5\u8be2\u4f18\u5316\u5668\u6211\u4eec\u77e5\u9053\uff0c\u6570\u636e\u5e93\u7684\u4f18\u5316\u5668\u6838\u5fc3\u5de5\u4f5c\u673a\u5236\u5728\u4e8e\uff1a\u679a\u4e3e\u53ef\u80fd\u7684\u6267\u884c\u8ba1\u5212\u627e\u5230\u8fd9\u4e9b\u6267\u884c\u8ba1\u5212\u4e2d\u4ee3\u4ef7\u6700\u4f4e\u7684\u4f8b\u5982\u4e00\u4e2aSQL\u4e2d\u6d89\u53ca\u4e09\u5f20\u8868\uff0c\u5728\u53ea\u8003\u8651\u5de6\u6df1\u6811\u7684\u60c5\u51b5\u4e0b\uff1a\u5728\u6ca1\u6709\u5168\u5c40\u7d22\u5f15\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u4e3a\uff0c\u6267\u884c\u8ba1\u5212\u7684\u7a7a\u95f4\u4e3b\u8981\u4f53\u73b0\u5728\u8fd9\u4e09\u5f20\u8868\u7684JOIN\u7684\u987a\u5e8f\uff0c\u5176\u7a7a\u95f4\u5927\u5c0f\u5927\u81f4\u4e3a3x2x1=6\u3002\u6267\u884c\u8ba1\u5212\u7684\u7a7a\u95f4\u76f8\u5bf9\u662f\u8f83\u5c0f\u7684\uff0c\u4f18\u5316\u5668\u5224\u65ad\u8fd96\u4e2a\u6267\u884c\u8ba1\u5212\u7684\u4ee3\u4ef7\u4e5f\u4f1a\u5bb9\u6613\u5f88\u591a\u3002\uff08\u5f53\u7136\u4f18\u5316\u5668\u8fd8\u6709\u5f88\u591a\u5de5\u4f5c\uff0c\u4f8b\u5982\u5206\u533a\u88c1\u526a\u7b49\u7b49\uff0c\u8fd9\u4e9b\u4f18\u5316\u6709\u6ca1\u6709\u7d22\u5f15\u90fd\u8981\u505a\uff0c\u5c31\u4e0d\u591a\u8bf4\u4e86\uff09\u3002\u5728\u6709\u5168\u5c40\u7d22\u5f15\u7684\u65f6\u5019\uff0c\u60c5\u51b5\u5c31\u590d\u6742\u591a\u4e86\u3002\u5047\u8bbe\u6bcf\u4e2a\u8868\u90fd\u67093\u4e2a\u5168\u5c40\u7d22\u5f15\uff0c\u90a3\u6267\u884c\u8ba1\u5212\u7a7a\u95f4\u7684\u5927\u5c0f\u5927\u81f4\u4f1a\u53d8\u6210(3&#215;3)x(2&#215;3)x(1&#215;3)=162\uff0c\u8fd9\u4e2a\u590d\u6742\u5ea6\u4f1a\u6025\u5267\u7684\u4e0a\u5347\u3002\u76f8\u5e94\u7684\uff0c\u5bf9\u4f18\u5316\u5668\u7684\u8981\u6c42\u5c31\u4f1a\u9ad8\u7684\u591a\u3002\u4f18\u5316\u5668\u9700\u8981\u8003\u8651\u66f4\u591a\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u624d\u80fd\u9009\u62e9\u51fa\u66f4\u4f18\u7684\u6267\u884c\u8ba1\u5212\uff1b\u9700\u8981\u505a\u66f4\u591a\u7684\u526a\u679d\uff0c\u624d\u80fd\u5728\u66f4\u77ed\u7684\u65f6\u95f4\u5185\u5b8c\u6210\u67e5\u8be2\u4f18\u5316\u3002\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u6ca1\u6709\u5168\u5c40\u7d22\u5f15\u7684\u201c\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u201d\u6216\u8005\u4e00\u4e9b\u4e2d\u95f4\u4ef6\u4ea7\u54c1\u4e2d\uff0c\u5176\u4f18\u5316\u5668\u662f\u5f88\u7fb8\u5f31\u7684\uff0c\u5927\u591a\u662fRBO\u7684\uff0c\u5b83\u4eec\u6839\u672c\u5c31\u4e0d\u9700\u8981\u4e00\u4e2a\u5f3a\u5927\u7684\u4f18\u5316\u5668\uff0c\u66f4\u591a\u7684\u4f18\u5316\u5185\u5bb9\u5b9e\u9645\u4e0a\u88ab\u5355\u673a\u4f18\u5316\u5668\u7ed9\u66ff\u4ee3\u4e86\u3002PolarDB-X\u63d0\u4f9b\u4e86\u4f7f\u7528\u4ee3\u4ef7\u6a21\u578b\u7684\u4f18\u5316\u5668\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=c5cqjgeRVQQtpV0bn4I6MA%3D%3D.zU9%2Bsgv170dxTyce8yMn0tFgwjqCKKpWsv%2FHD7HXucZ39rBQsm99FIGM9AR4ntZv\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u3002\u5728MySQL\u4e0a\u5b9e\u73b0\u5f3a\u4e00\u81f4\u3001\u9ad8\u6027\u80fd\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u4e3a\u4e86\u505a\u4e00\u4e2a\u900f\u660e\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff0c\u6700\u5173\u952e\u7684\u5c31\u662f\u5168\u5c40\u7d22\u5f15\u4ee5\u53ca\u5168\u5c40\u7d22\u5f15\u4f9d\u8d56\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u4e86\u3002\u4e2d\u95f4\u4ef6\u65f6\u4ee3\u7684\u63a2\u7d22\u5df2\u7ecf\u544a\u8bc9\u6211\u4eec\uff0c\u8981\u505a\u5f3a\u4e00\u81f4\u3001\u9ad8\u6027\u80fd\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u4e00\u5b9a\u8981\u5bf9\u5b58\u50a8\uff08MySQL\uff09\u505a\u6df1\u5ea6\u7684\u4fee\u6539\u3002\u6211\u4eec\u9009\u62e9\u7684\u662f\u4f7f\u7528\u5168\u5c40MVCC\uff08TSO\uff09+2PC\uff08XA\uff09\u7684\u65b9\u6848\u3002\u4eceMySQL\u7684\u5355\u673aMVCC\u4e2d\u5305\u542b\u4e86start_timestamp\uff08\u4e5f\u5c31\u662fMySQL\u4e2d\u7684trx_id\uff09\uff0c\u4e3a\u4e86\u5b9e\u73b0\u5168\u5c40MVCC\uff0c\u9700\u8981\u505a\u51e0\u4ef6\u6838\u5fc3\u7684\u4e8b\u60c5\uff1a\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u7684\u65f6\u95f4\u6233\u751f\u6210\u5668TSO\uff0c<a href=\"https:\/\/link.segmentfault.com\/?enc=CkF1WghcDh5O17yW6TiZ1A%3D%3D.44mtfDlrgGXIZ5rIBr6IzjwZ2ucc6rE8XM80pPaXMCHV7T543lXRHVBQHc9%2F%2BHBE\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u3002\u4f7f\u7528TSO\u751f\u6210\u7684\u5168\u5c40\u65f6\u95f4\u6233\u66ff\u6362\u6389\u5355\u673a\u751f\u6210\u7684trx_id\u3002\u5f15\u5165commit_timestamp\uff08\u540c\u6837\u7531TSO\u751f\u6210\uff09\uff0c\u4f7f\u7528strat_timestamp\u4e0ecommit_timestamp\u6765\u8fdb\u884c\u53ef\u89c1\u6027\u7684\u5224\u65ad\uff0c\u975e\u5e38\u7684\u9ad8\u6548\uff0c<a href=\"https:\/\/link.segmentfault.com\/?enc=i1x3uu164oADw%2FsdIDqphw%3D%3D.sd5%2BPjpdZrPAQ6kGVGgftVTLS4ZuCoZKErzY8AZOaEwrTJgIgac5OslipveIiyEZ\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u3002\u4e0d\u4f7f\u7528\u5728\u8282\u70b9\u4e4b\u95f4\u4ea4\u6362\u6d3b\u8dc3\u4e8b\u7269\u94fe\u8868\u6216\u8005GTM\u8fd9\u79cd\u4ee3\u4ef7\u975e\u5e38\u5927\u7684\u65b9\u6848\u3002\u00a0PolarDB-X\u4e2d\u7684\u4e8b\u52a1\u6d41\u7a0b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042501240\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>InnoDB\u4e2d\u7684\u8bb0\u5f55\u683c\u5f0f\u7684\u4fee\u6539\uff0c\u6211\u4eec\u79f0\u4e4b\u4e3aLizard\u4e8b\u52a1\u7cfb\u7edf\uff0c\u8be6\u89c1\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=5AiEtA0KB3OwiwVVZK9B3w%3D%3D.LkdXYmyi1A2SFtJyiNmyx6XLyQErkkEeIC8hYdt5CUCDqGkTS%2B8Q8Nr5oQXB1nh%2B\" rel=\"nofollow\">https:\/\/developer.aliyun.com\/&#8230;<\/a><br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042501241\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u6211\u4eec\u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u6587\u7ae0\u6765\u4ecb\u7ecdPolarDB-X\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u5b9e\u73b0\uff1aPolarDB-X \u5f3a\u4e00\u81f4\u5206\u5e03\u5f0f\u4e8b\u52a1\u539f\u7406PolarDB-X \u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u5b9e\u73b0\uff08\u4e00\uff09\u6709\u4e86\u5206\u5e03\u5f0f\u4e8b\u52a1\u4e0e\u5168\u5c40\u7d22\u5f15\u540e\uff0cPolarDB-X\u6b63\u5f0f\u4ece\u4e2d\u95f4\u4ef6\u8f6c\u578b\u6210\u4e86\u4e00\u4e2a\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u3002PolarDB-X\u7684\u900f\u660e\u5206\u5e03\u5f0fPolarDB-X\u5b9e\u73b0\u4e86\u975e\u5e38\u4f18\u79c0\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\u4e0e\u5168\u5c40\u7d22\u5f15\uff0c\u6ee1\u8db3\u4e0a\u6587\u63d0\u5230\u4e86\u5bf9\u5168\u5c40\u7d22\u5f15\u7684\u8981\u6c42\uff0c\u505a\u5230\u4e86\u900f\u660e\u5206\u5e03\u5f0f\u3002\u5728\u900f\u660e\u5206\u5e03\u5f0f\u6a21\u5f0f\u4e0b\uff08CREATE DATABASE\u4e2d\u6307\u5b9amode=&#8217;auto&#8217;\uff09\uff0c\u6240\u6709\u7684\u7d22\u5f15\u90fd\u662f\u5168\u5c40\u7d22\u5f15\uff0c\u5e94\u7528\u65e0\u9700\u5173\u5fc3\u5206\u533a\u952e\u7684\u6982\u5ff5\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u7684\u5efa\u8868\u8bed\u53e5\uff0c\u4e0e\u5355\u673aMySQL\u5b8c\u5168\u4e00\u81f4\uff0c\u5e76\u4e0d\u9700\u8981\u6307\u5b9a\u5206\u533a\u952e\uff1acreate table orders (\u00a0 id bigint,\u00a0 buyer_id varchar(128) comment &#8216;\u4e70\u5bb6&#8217;,\u00a0 seller_id varchar(128) comment &#8216;\u5356\u5bb6&#8217;,\u00a0 primary key(id),\u00a0 index sdx(seller_id),\u00a0 index bdx(buyer_id))\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042501242\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u521b\u5efa\u5168\u5c40\u7d22\u5f15\u4e5f\u4e0e\u5355\u673aMySQL\u521b\u5efa\u4e8c\u7ea7\u7d22\u5f15\u7684\u4f53\u9a8c\u4e00\u81f4\uff0c\u5168\u7a0b\u662fOnline\u7684\uff1aCREATE INDEX idx_seller_id ON orders (seller_id);PolarDB-X\u7684\u5168\u5c40\u7d22\u5f15\u662f\u5f3a\u4e00\u81f4\u7684\uff0c\u5176\u6570\u636e\u4e00\u81f4\u6027\u4f53\u9a8c\u4e0e\u5355\u673aMySQL\u6ca1\u6709\u660e\u663e\u5dee\u5f02\uff0c\u63d0\u4f9b\u4e86\u7b26\u5408MySQL\u8bed\u4e49\u7684RC\u4e0eRR\u7684\u9694\u79bb\u7ea7\u522b\u3002\u540c\u65f6\uff0cPolarDB-X\u5728\u7d22\u5f15\u7684\u7ef4\u62a4\u3001\u4f18\u5316\u5668\u4e0a\u4e5f\u505a\u4e86\u5927\u91cf\u7684\u5de5\u4f5c\uff0c\u786e\u4fdd\u7d22\u5f15\u80fd\u9ad8\u6548\u7684\u521b\u5efa\u3001\u7ef4\u62a4\uff0c\u4f18\u5316\u5668\u80fd\u6b63\u786e\u7684\u751f\u6210\u4f7f\u7528\u7d22\u5f15\u7684\u6267\u884c\u8ba1\u5212\u3002PolarDB-X\u7684\u5206\u533a\u7b97\u6cd5\uff0c\u4e5f\u80fd\u5f88\u597d\u7684\u5904\u7406\u7d22\u5f15\u4e2d\u4ea7\u751f\u7684\u70ed\u70b9\u3001\u6570\u636e\u503e\u659c\u7b49\u95ee\u9898\uff0c\u53c2\u8003\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=ZlppvBfRawY%2F0%2Bbct2Ucvg%3D%3D.ucqkMe9LjMF9V9rGySfgZ3yNBWfqRDL4Xfit8eRlzRzOGj%2B%2Fe4qWfr8xPLMHCW%2Bm\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u81ea\u52a8\uff08\u900f\u660e\uff09\u51b3\u5b9a\u4e0b\u9650\uff0c\u624b\u52a8\u51b3\u5b9a\u4e0a\u9650\u6309\u900f\u660e\u4e0e\u624b\u52a8\u6765\u5212\u5206\u5e02\u9762\u4e0a\u5e38\u89c1\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff1a\u900f\u660e\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7684\u5178\u578b\u4ee3\u8868\uff1aTiDB\u3001CockroachDB\u3002\u624b\u52a8\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u5178\u578b\u4ee3\u8868\uff1aOceanBase\u3001YugabyteDB\u3002\u662f\u5426\u900f\u660e\u7684\u5206\u5e03\u5f0f\u6570\u636e\u4e00\u5b9a\u6bd4\u624b\u52a8\u7684\u8981\u597d\u5462\uff1f\u5bf9\u4e8e\u53ea\u63d0\u4f9b\u900f\u660e\u7528\u6cd5\u7684\u6570\u636e\u5e93\uff0c\u8fc1\u79fb\u6210\u672c\u4f1a\u6bd4\u8f83\u4f4e\uff0c\u521d\u6b65\u4f53\u9a8c\u4f1a\u6bd4\u8f83\u597d\u3002\u4f46\u8fdb\u5165\u6df1\u6c34\u533a\u540e\uff0c\u7531\u4e8e\u4e0d\u53ef\u907f\u514d\u7684\u4f1a\u5927\u91cf\u7684\u4f7f\u7528\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u5728\u6838\u5fc3\u573a\u666f\u4e2d\uff0c\u6027\u80fd\u5f80\u5f80\u662f\u8fbe\u4e0d\u5230\u8981\u6c42\u7684\uff08\u6216\u8005\u540c\u6837\u7684\u6027\u80fd\u9700\u8981\u66f4\u9ad8\u7684\u6210\u672c\uff09\uff0c\u5e76\u4e14\u7f3a\u5c11\u6d88\u9664\u5206\u5e03\u5f0f\u4e8b\u52a1\u3001\u66f4\u5145\u5206\u7684\u8ba1\u7b97\u4e0b\u63a8\u7b49\u4f18\u5316\u624b\u6bb5\u3002\u5bf9\u4e8e\u53ea\u63d0\u4f9b\u624b\u52a8\u7528\u6cd5\u7684\u6570\u636e\u5e93\uff0c\u867d\u7136\u8bbe\u8ba1\u826f\u597d\u7684\u5206\u533a\u952e\u4f7f\u5f97\u7406\u8bba\u4e0a\u80fd\u591f\u505a\u5230\u6027\u80fd\u6700\u4f18\uff0c\u4f46\u4f7f\u7528\u95e8\u69db\u4f1a\u5927\u5e45\u589e\u52a0\uff0810%\u6838\u5fc3\u8868\u8bbe\u8ba1\u5206\u533a\u952e\u4e5f\u5c31\u7b97\u4e86\uff0c\u5269\u4e0b\u768490%\u975e\u6838\u5fc3\u8868\u4e5f\u8981\u8bbe\u8ba1\u5206\u533a\u952e\uff09\u3002\u00a0\u6211\u4eec\u8ba4\u4e3a\uff0c\u65e0\u8bba\u662f\u7eaf\u900f\u660e\u8fd8\u662f\u7eaf\u624b\u52a8\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff0c\u90fd\u65e0\u6cd5\u5f88\u597d\u7684\u6ee1\u8db3\u4e1a\u52a1\u5bf9\u662f\u7528\u6210\u672c\u548c\u6027\u80fd\u517c\u987e\u7684\u8981\u6c42\u3002PolarDB-X\u9664\u4e86\u63d0\u4f9b\u4e86\u900f\u660e\u6a21\u5f0f\uff0c\u4e5f\u5b8c\u6574\u7684\u652f\u6301\u4e86\u5206\u533a\u8868\u7684\u8bed\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4e86Join Group\/Table Group\u3001\u5206\u533a\u5728\u7ebf\u53d8\u66f4\u7b49\u5de5\u5177\uff0c\u8ba9\u5e94\u7528\u5728\u9700\u8981\u6781\u81f4\u6027\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u80fd\u5c06\u4e8b\u52a1\u3001\u8ba1\u7b97\u66f4\u591a\u7684\u4e0b\u63a8\u5230\u5b58\u50a8\u8282\u70b9\u3002PolarDB-X\u662f\u5e02\u9762\u4e0a\u552f\u4e00\u80fd\u591f\u505a\u5230\u540c\u65f6\u63d0\u4f9b\u900f\u660e\u4e0e\u624b\u52a8\u4e24\u79cd\u6a21\u5f0f\u7684\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff0c\u6211\u4eec\u63a8\u8350\u5927\u591a\u573a\u666f\u4f7f\u7528\u900f\u660e\u6a21\u5f0f\uff0c\u4e4b\u540e\u5bf9\u6838\u5fc3\u4e1a\u52a1\u573a\u666f\u8fdb\u884c\u538b\u6d4b\uff0c\u5e76\u4f7f\u7528\u5206\u533a\u8868\u8bed\u6cd5\u5bf9\u8fd9\u4e9b\u573a\u666f\u505a\u624b\u52a8\u7684\u4f18\u5316\uff0c\u4ee5\u8fbe\u5230\u6700\u9ad8\u7684\u6027\u80fd\u3002\u4f7f\u7528Paxos\u534f\u8bae\u505a\u5230RPO=0\u4e2d\u95f4\u4ef6\u5bf9\u63a5\u7684MySQL\u666e\u904d\u4f7f\u7528\u4e3b\u5907\u67b6\u6784\uff0c\u8fd9\u79cd\u65b9\u5f0f\u6700\u5927\u7684\u95ee\u9898\u5c31\u662f\u4f1a\u4e22\u6570\u636e\uff0c\u751a\u81f3\u65f6\u95f4\u957f\u4e86\u662f\u4e00\u4e2a\u5fc5\u7136\u7684\u4e8b\u60c5\uff08\u5e38\u5728\u6cb3\u8fb9\u8d70\uff0c\u54ea\u80fd\u4e0d\u6e7f\u978b\u5462\uff09\u3002\u7ecf\u8fc7\u6570\u636e\u5e93\u5708\u5b50\u8fd9\u51e0\u5e74\u7684\u79d1\u666e\uff0c\u57fa\u672c\u5927\u5bb6\u90fd\u77e5\u9053\u4e86\u9700\u8981\u4f7f\u7528\u4e00\u4e9b\u4e00\u81f4\u6027\u534f\u8bae\uff0c\u4f8b\u5982Paxos\u548cRaft\u624d\u80fd\u505a\u5230\u4e0d\u4e22\u6570\u636e\u3002\u8fd9\u4e9b\u534f\u8bae\u5b9e\u9645\u4e0a\u5e76\u4e0d\u662f\u4ec0\u4e48\u79d8\u5bc6\u4e86\uff0c\u751a\u81f3\u6570\u636e\u5e93\u5708\u5b50\u90fd\u6709\u4e00\u4e2a\u6bb5\u5b50\u201c\u73b0\u5728\u6821\u62db\u7684\u5b66\u751f\u90fd\u8981\u80fd\u624b\u64b8Paxos\u4e86\u201d\u3002\u95e8\u69db\u5e76\u4e0d\u5728\u534f\u8bae\u672c\u8eab\u4e0a\uff0c\u800c\u5728\u4e8e\u5982\u4f55\u4e0eMySQL\u7ed3\u5408\u540e\u7684\u7a33\u5b9a\u6027\u4e0e\u6027\u80fd\u3002\u7a33\u5b9a\u6027\uff0c\u53ea\u6709\u7ecf\u8fc7\u5927\u89c4\u6a21\u7684\u9a8c\u8bc1\uff0c\u8e29\u8fc7\u8db3\u591f\u591a\u7684\u5751\uff0c\u624d\u80fd\u83b7\u5f97\u3002PolarDB-X\u6240\u4f7f\u7528\u7684\u7684Paxos\u534f\u8bae\u662f\u6e90\u4e8e\u963f\u91cc\u5185\u90e8\u7684X-Paxos\uff0c\u53ef\u4ee5\u8fd9\u6837\u8bf4\uff0c\u963f\u91cc\u5185\u90e8\u7684MySQL\u6570\u636e\u5e93\uff0c\u5df2\u7ecf\u4e0d\u5b58\u5728\u4e3b\u5907\u6a21\u5f0f\u4e86\uff0c100%\u7684\u4f7f\u7528X-Paxos\u3002\u8fd9\u4ee3\u8868\u5b83\u7ecf\u5386\u4e86\u4e0a\u4e07\u4e2aMySQL\u96c6\u7fa4\u4ee5\u53ca\u5404\u79cd\u5927\u4fc3\u7684\u9a8c\u8bc1\uff0c\u5177\u5907\u6781\u9ad8\u7684\u53ef\u9760\u6027\u3002\u6211\u4eec\u6709\u51e0\u7bc7\u6587\u7ae0\u60f3\u5199\u4ecb\u7ecdX-Paxos\uff1aPolarDB-X \u4e00\u81f4\u6027\u5171\u8bc6\u534f\u8bae \u2014\u2014 X-Paxos\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=9UfKZT5mT26wV3odIJNiuw%3D%3D.cwB2H2NYZ1L4S3I4GoKtPZ%2Fjv6XSxClBBXJFYsTmQK%2Fgb%2BiOepJcnbfWfbEmHXOq\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a> \u5b58\u50a8\u67b6\u6784\u4e4b\u201c\u57fa\u4e8ePaxos\u7684\u6700\u4f73\u751f\u4ea7\u5b9e\u8df5\u201d\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=71degLz0LSL%2Bgr9AOuu19A%3D%3D.4DJv9pM7%2Bzqgk9nzE%2BJkrcCGAPkGGPN%2B1VeJf%2Fxhc08LRu8BXJIfMlWAO8XqC%2B7p\" rel=\"nofollow\">https:\/\/zhuanlan.zhihu.com\/p\/&#8230;<\/a>\u5b8c\u5168\u517c\u5bb9MySQL\u7684Binlog\u534f\u8bae\u8981\u5229\u7528MySQL\u751f\u6001\u7684\u8d44\u6e90\uff0c\u975e\u5e38\u91cd\u8981\u7684\u4e00\u70b9\u662f\u80fd\u591f\u4f7f\u7528MySQL\u751f\u6001\u7684\u5de5\u5177\uff0c\u5c06\u6570\u636e\u6d41\u5411\u4e0b\u6e38\u3002\u4e1a\u5185\u5e38\u89c1\u7684\u65b9\u6848\u91cc\uff1a\u4e2d\u95f4\u4ef6\u7c7b\u4ea7\u54c1\uff0c\u9700\u8981\u7528\u6237\u53bb\u8ba2\u9605\u6bcf\u4e2aMySQL\u7684Binlog\uff0c\u7531\u7528\u6237\u81ea\u884c\u89e3\u51b3\u8fd9\u4e2d\u95f4\u7684\u5404\u79cd\u8fd0\u7ef4\u95ee\u9898\uff08\u4f8b\u5982DDL\u95ee\u9898\uff0c\u4e0d\u540c\u7684\u5206\u8868\u540d\u8981\u505a\u5408\u5e76\u7b49\uff09\uff0c\u975e\u5e38\u7684\u7e41\u7410\u3002\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7c7b\u4ea7\u54c1\uff0c\u8fd9\u4e9b\u5927\u591a\u63d0\u4f9b\u81ea\u5df1\u7684CDC\u80fd\u529b\uff0c\u4f8b\u5982OceanBase\u3001TiDB\uff0c\u4f46\u4ed6\u4eec\u7684\u683c\u5f0f\u5e76\u975eMySQL\u7684Binlog\u683c\u5f0f\uff0c\u65e0\u6cd5\u76f4\u63a5\u4f7f\u7528MySQL\u751f\u6001\u3002PolarDB-X\u662f\u5e02\u9762\u4e0a\u552f\u4e00\u4e00\u4e2a\u63d0\u4f9b\u5b8c\u5168\u517c\u5bb9MySQL 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href=\"https:\/\/link.segmentfault.com\/?enc=xWzAbfy6X5RrYcPdpni0WQ%3D%3D.0pcbK%2FYYWsO9OX4j%2Fsf5uN%2BElnj3t5jdvgNERIgZxtxcVjS5wbTNXf%2FG1xRk72va\" rel=\"nofollow\">https:\/\/www.zhihu.com\/org\/pol&#8230;<\/a>\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=EdIC7wF4Pu7TFF4tgyoLwg%3D%3D.VDt42%2BGrkSvf2bNig47BGnUYuD1XijkwVyWD3Dgv3fj8XlVc%2Frskl3RzX08uKsht\" rel=\"nofollow\">https:\/\/click.aliyun.com\/m\/10&#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\/1190000042501231\">https:\/\/segmentfault.com\/a\/1190000042501231<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0PolarDB-X\u524d\u8eab\u662f\u6dd8\u5b9d\u5185\u90e8\u4f7f\u7528\u7684\u5206\u5e93\u5206\u8868\u4e2d\u95f4\u4ef6TDDL\uff082007\u5e74\uff0cJava\u5e93\u7684\u5f62\u6001\uff09\uff0c\u65e9\u671f\u4ee5D 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