{"id":50345,"date":"2023-06-25T19:19:57","date_gmt":"2023-11-23T05:26:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/2020%e5%b9%b4%e7%8e%b0%e5%9c%a8%e7%9a%84newsql%e6%98%af%e6%8c%87%e7%9a%84%e5%93%aa%e4%ba%9b%e4%b8%9c%e8%a5%bf%ef%bc%9f\/"},"modified":"2024-04-30T10:39:40","modified_gmt":"2024-04-30T02:39:40","slug":"2020%e5%b9%b4%e7%8e%b0%e5%9c%a8%e7%9a%84newsql%e6%98%af%e6%8c%87%e7%9a%84%e5%93%aa%e4%ba%9b%e4%b8%9c%e8%a5%bf%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/2020%e5%b9%b4%e7%8e%b0%e5%9c%a8%e7%9a%84newsql%e6%98%af%e6%8c%87%e7%9a%84%e5%93%aa%e4%ba%9b%e4%b8%9c%e8%a5%bf%ef%bc%9f\/","title":{"rendered":"2020\u5e74\u73b0\u5728\u7684NewSQL\u662f\u6307\u7684\u54ea\u4e9b\u4e1c\u897f\uff1f"},"content":{"rendered":"<h4>\u514d\u8d23\u58f0\u660e<\/h4>\n<p>\u8be5\u6587\u7ae0\u662f\u4e2a\u4eba\u6839\u636eNewSQL\u5f00\u53d1\u4f9b\u5e94\u5546\u7684\u6280\u672f\u535a\u5ba2\u3001\u5404\u79cd\u8bba\u6587\u4ee5\u53ca\u5176\u4ed6\u65b0\u95fb\u7f51\u7ad9\u7684\u5185\u5bb9\u8fdb\u884c\u603b\u7ed3\u7684\u3002\u56e0\u6b64\uff0c\u53ef\u80fd\u5305\u542b\u4e86\u56e0\u7406\u89e3\u4e0d\u8db3\u800c\u5f15\u8d77\u7684\u8bef\u89e3\u6216\u9519\u8bef\u8bc6\u522b\u3002\u5982\u679c\u9700\u8981\u8fdb\u4e00\u6b65\u4e86\u89e3\uff0c\u8bf7\u76f4\u63a5\u53c2\u8003\u6240\u5217\u7684\u5404\u79cd\u53c2\u8003\u6587\u732e\u3002\u5982\u679c\u53ef\u80fd\uff0c\u6211\u4eec\u5c06\u5c1d\u8bd5\u5438\u7eb3\u548c\u4fee\u6b63\u6280\u672f\u6307\u6458\uff0c\u4f46\u65e0\u6cd5\u4fdd\u8bc1\u5feb\u901f\u7684\u56de\u5e94\u3002<\/p>\n<h1>\u5bf9\u4e8eNewSQL\uff0c\u89e3\u91ca\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206\u3002<\/h1>\n<p>\u672c\u6587\u662fNewSQL\u7684\u6982\u8ff0\u90e8\u5206\uff0c\u8fd9\u662f\u524d\u7bc7\u3002<br \/>\n\u76ee\u5f55\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>NewSQL\u662f\u4ec0\u4e48\uff1f<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>NewSQL\u7684\u67b6\u6784<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>NewSQL\u4e0e\u4f20\u7edf\u6570\u636e\u5e93\u7684\u6bd4\u8f83<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>NewSQL\u7ec4\u4ef6\u8be6\u89e3<\/ol>\n<p>\u672c\u6587\u5c06\u89e3\u91ca\u7b2c\u4e00\u7ae0\u5230\u7b2c\u4e09\u7ae0\u7684\u5185\u5bb9\u3002<br \/>\n\u7b2c\u56db\u7ae0\u5c06\u8fdb\u884c\u66f4\u8be6\u7ec6\u7684\u6280\u672f\u89e3\u91ca\uff0c\u5e76\u5728\u540e\u7eed\u7684\u201cNewSQL\u7684\u7ec4\u4ef6\u8be6\u89e3\u201d\u4e2d\u8fdb\u884c\u63cf\u8ff0\u3002<\/p>\n<p>\u6211\u4e5f\u5e0c\u671b\u60a8\u4e00\u5e76\u9605\u8bfb\u8fd9\u90e8\u5206\u5185\u5bb9\u3002<\/p>\n<h1>1. 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alt=\"DBMS\u306e\u5206\u985e\" \/><\/div>\n<hr 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Azure\uff09\uff0c\u5b83\u4eec\u6df7\u5408\u5b58\u5728\u3002<\/p>\n<h2>1.1. \u4eceGoogle Cloud Spanner\u7684\u89d2\u5ea6\u6765\u770b\uff0cNewSQL\u7684\u4e00\u4e2a\u5b8c\u5584\u5f62\u6001<\/h2>\n<p>\u5982\u679c\u8981\u57282020\u5e74\u76ee\u524d\u63d0\u53ca\u4e00\u500b\u4ee3\u8868\u6027\u7684NewSQL\u670d\u52d9\uff0c\u90a3\u5c31\u662fGoogle Cloud Spanner\u3002<\/p>\n<p>2012\u5e74\u53d1\u5e03\u4e86\u540d\u4e3a\u201cSpanner\uff1aGoogle\u7684\u5168\u7403\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u201d\u7684\u8bba\u6587\uff0c\u5e76\u5728Google\u5185\u90e8\u4f7f\u7528\uff0c\u4f46\u4ece2017\u5e74\u5f00\u59cb\uff0c\u4e00\u822c\u7528\u6237\u4e5f\u53ef\u4ee5\u4f7f\u7528Google Cloud Spanner\u3002<\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u5e76\u975e\u9488\u5bf9Spanner\u7684\u89e3\u8bf4\uff0c\u56e0\u6b64\u8bf7\u53c2\u8003\u8fd9\u7bc7\u6587\u7ae0\u4ee5\u83b7\u53d6\u8be6\u7ec6\u4fe1\u606f\uff0c\u5176\u4e3b\u8981\u7279\u70b9\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e09\u70b9\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5f37\u3044\u6574\u5408\u6027<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30b5\u30dd\u30fc\u30c8<\/ul>\n<p>\u540c\u65f6\u5177\u5907\u4e0a\u8ff0\u7279\u70b9\uff0c\u901a\u8fc7\u6570\u636e\u7684\u590d\u5236\u8de8\u6570\u636e\u4e2d\u5fc3\u548c\u5730\u533a\uff0c\u63d0\u9ad8\u53ef\u7528\u6027\uff0c\u652f\u6301\u5168\u7403\u4e1a\u52a1\u3002<\/p>\n<p>\u8c37\u6b4c\u4e91Spanner\u7684\u670d\u52a1\u4ecb\u7ecd\u4e2d\u63d0\u5230\u4e86\uff0c\u201c\u9002\u7528\u4e8e\u5168\u7403\u548c\u533a\u57df\u5e94\u7528\u6570\u636e\u7684\u53ef\u6269\u5c55\u7684\u5168\u9762\u6258\u7ba1\u5173\u7cfb\u578b\u6570\u636e\u5e93\u670d\u52a1\u201d\uff0c\u867d\u7136\u6709\u5f88\u591a\u82f1\u6587\u7f29\u5199\uff0c\u4f46\u65e0\u7591\u4f20\u8fbe\u4e86\u8c37\u6b4c\u521b\u5efa\u7684\u6700\u5f3a\u5927\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u670d\u52a1\u3002<\/p>\n<p>\u636e\u4f30\u8ba1\uff0cSpanner\u5728\u56fd\u5185\u751a\u81f3\u5728\u4e25\u82db\u7684\u652f\u4ed8\u670d\u52a1\u7b49\u5e94\u7528\u6848\u4f8b\u4e2d\u5df2\u7ecf\u88ab\u4f7f\u7528\uff0c\u5e76\u4e14\u9884\u8ba1\u5c06\u6709\u66f4\u591a\u7684\u4f01\u4e1a\u548c\u670d\u52a1\u9009\u62e9\u7ee7\u7eed\u4f7f\u7528\u5b83\u3002<\/p>\n<h3>\u4e3a\u4ec0\u4e48\u9700\u8981Spanner\uff1f<\/h3>\n<p>\u7a0d\u540e\u4f1a\u8be6\u7ec6\u8bf4\u660e\u3002<\/p>\n<ol>\u4f20\u7edf\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u73b0\u5728\u5df2\u7ecf\u8fbe\u5230\u4e86\u53ef\u6269\u5c55\u6027\u7684\u6781\u9650\uff0c\u5f80NoSQL\u4e0a\u642d\u5efa\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f\u6bd4\u60f3\u8c61\u7684\u66f4\u52a0\u56f0\u96be\u3002<\/ol>\n<p>\u8fd9\u53ef\u80fd\u662f\u4e3b\u8981\u7684\u539f\u56e0\u3002<\/p>\n<p>\u4ee5\u524d\uff0c\u4eba\u4eec\u901a\u8fc7\u5728RDBMS\u4e2d\u4f7f\u7528\u8bfb\u5199\u526f\u672c\u548c\u7c7b\u4f3cRedis\u7684\u5185\u5b58KVS\u6765\u63d0\u9ad8\u8bfb\u5199\u6027\u80fd\u7684\u6269\u5c55\u6027\u3002\u7136\u800c\uff0c\u7531\u4e8e\u590d\u5236\u5ef6\u8fdf\u548c\u5199\u5165\u5ef6\u8fdf\u7b49\u539f\u56e0\uff0c\u5b58\u5728\u7740\u6570\u636e\u4e00\u81f4\u6027\u65e0\u6cd5\u4fdd\u6301\u7684\u65f6\u673a\uff0c\u5bf9\u4e8e\u590d\u6742\u7684\u914d\u7f6e\u662f\u5426\u503c\u5f97\u4ed8\u51fa\u7684\u7591\u95ee\u4f9d\u7136\u5b58\u5728\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5728\u9700\u8981\u66f4\u5f37\u7684\u53ef\u64f4\u5c55\u6027\uff08\u5c24\u5176\u662f\u5beb\u5165\u58d3\u529b\u8f03\u5927\u7684\uff09\u7528\u4f8b\u4e2d\uff0c\u6709\u6642\u6703\u4f7f\u7528\u50cfCassandra\u7b49NoSQL\u7684\u8cc7\u6599\u5eab\u3002\u7136\u800c\uff0c\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u4e00\u81f4\u6027\u4e0d\u518d\u662f\u8cc7\u6599\u5eab\u7684\u8cac\u4efb\uff0c\u800c\u662f\u9700\u8981\u5728\u61c9\u7528\u7a0b\u5e8f\u65b9\u9762\u9032\u884c\u6700\u5927\u7a0b\u5ea6\u7684\u8003\u616e\u3002<\/p>\n<p>\u76ee\u524d\u9700\u8981\u7684\u662f\u53ef\u4ee5\u540c\u65f6\u8fdb\u884c\u8bfb\u5199\u4e14\u5177\u6709\u53ef\u6269\u5c55\u6027\u7684\u6570\u636e\u5e93\uff0c\u540c\u65f6\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u800c\u6700\u63a5\u8fd1\u8fd9\u4e00\u8981\u6c42\u7684\u662fSpanner\u3002<\/p>\n<h2>1.2\u4e2aSpanner\u7684\u514b\u9686\u5174\u8d77<\/h2>\n<p>\u6b63\u59822011\u5e74INFOQ\u7684\u6587\u7ae0\u4e2d\u63d0\u5230\u7684\u90a3\u6837\uff0c\u4ece\u90a3\u65f6\u8d77\uff0cNewSQL\u9886\u57df\u5c31\u5df2\u7ecf\u5b58\u5728\uff0c\u5e76\u4e14\u5f00\u53d1\u51fa\u4e86\u5404\u79cd\u4e0d\u540c\u7684\u4ea7\u54c1\u3002\u5373\u4f7f\u5728\u73b0\u5728\uff0cMySQL NDB Cluster\u4e5f\u5728\u67b6\u6784\u4e0a\u5b8c\u5168\u7b26\u5408NewSQL\u7684\u7279\u5f81\uff0c\u6b64\u5916\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u4ea7\u54c1\uff0c\u5982VoltDB\u3001FoundationDB\u548cNuoDB\u7b49\uff0c\u4ece\u5f53\u65f6\u4e00\u76f4\u5b58\u5728\u81f3\u4eca\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5728Spanner\u53d1\u5e03\u4e4b\u540e\uff0c\u51fa\u73b0\u4e86\u4e00\u4e9b\u4ee5\u4e0e\u4ee5\u524d\u4e0d\u540c\u7684\u65b9\u5f0f\u5b9e\u73b0NewSQL\u7684\u4ea7\u54c1\u3002<br \/>\n\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u7c7b\u4f3cSpanner\u7684\u6570\u636e\u5e93\uff08\u53ef\u4ee5\u79f0\u4e4b\u4e3aSpanner\u514b\u9686\uff09\u7684\u4e09\u4e2a\u4ea7\u54c1\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">CockroachDB<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">TiDB<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">YugaByteDB<\/ul>\n<p>\u8fd9\u4e9b\u6570\u636e\u5e93\u57fa\u4e8eSpanner\uff0c\u91c7\u7528\u4e86\u7a0d\u5fae\u4e0d\u540c\u7684\u8bbe\u8ba1\u601d\u60f3\u548c\u6280\u672f\u8981\u7d20\uff0c\u63d0\u4f9b\u4e86\u5177\u6709\u5f3a\u4e00\u81f4\u6027\u548c\u652f\u6301ACID\u4e8b\u52a1\u7684\u5206\u5e03\u5f0fSQL\u6570\u636e\u5e93\uff08\u5168\u7403\u8303\u56f4\uff09\u3002<\/p>\n<p>\u8fd9\u4e9b\u4f9b\u5e94\u5546\u58f0\u79f0\uff0c\u901a\u8fc7\u4f7f\u7528\u8fd9\u4e9b\u4ea7\u54c1\uff0c\u5373\u4f7f\u4e0d\u662fGoogle Cloud\u7528\u6237\uff0c\u4e5f\u53ef\u4ee5\u6784\u5efa\u7c7b\u4f3cSpanner\u7684\u6570\u636e\u5e93\u57fa\u7840\u8bbe\u65bd\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u9ad8\u6548\u548c\u7075\u6d3b\u7684\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u3002<\/p>\n<p>\u8fd9\u4e9bNewSQL\u7684\u5171\u540c\u4e4b\u5904\u6216\u90e8\u5206\u4e0d\u540c\u7684\u67b6\u6784\u5c06\u5728\u7b2c2\u7ae0\u4ee5\u540e\u8be6\u8ff0\u3002<\/p>\n<h2>1.3 \u4e2a\u6273\u624b\u7684\u7f3a\u70b9\u548c\u6539\u8fdb\u65b9\u6cd5<\/h2>\n<p>\u5c3d\u7ba1Spanner\u4f5c\u4e3a\u4e00\u79cd\u53ef\u7528\u7684NewSQL\u65b9\u6848\u5728\u76ee\u524d\u662f\u7406\u60f3\u7684\uff0c\u4f46\u5b83\u5f53\u7136\u4e5f\u4e0d\u662f\u6beb\u65e0\u7f3a\u70b9\u7684\u3002\u9996\u5148\uff0c\u5728\u5730\u7406\u4e0a\u5206\u5e03\u7684\u73af\u5883\u4e2d\uff0c\u5177\u5907\u5f3a\u4e00\u81f4\u6027\u5e76\u652f\u6301\u4e8b\u52a1\u672c\u8eab\u5c31\u5e76\u4e0d\u5bb9\u6613\u3002<\/p>\n<p>\u4ece\u5b66\u672f\u89d2\u5ea6\u6765\u770b\uff0cCalvin\u7ecf\u5e38\u4e0eSpanner\u8fdb\u884c\u6bd4\u8f83\u3002Calvin\u4e5f\u57282012\u5e74\u53d1\u8868\u4e86\u4e00\u7bc7\u540d\u4e3a\u300aCalvin: Fast Distributed Transactions for Partitioned Database Systems\u300b\u7684\u8bba\u6587\u3002<\/p>\n<p>\u6211\u60f3\u8981\u5728\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u8be6\u7ec6\u8ba8\u8bba\u4e8b\u52a1\uff0c\u5e76\u51cf\u5c0fSpanner\u548c\u5176\u514b\u9686\u4ea7\u54c1\u4e2d\u7684Paxos\u548cRaft\u901a\u4fe1\u7684\u5f00\u9500\uff0c\u4ee5\u5b9e\u73b0\u4fdd\u8bc1\u4e00\u81f4\u6027\u548c\u6027\u80fd\u7684\u76ee\u7684\u3002<br \/>\nCalvin\u548c\u5176\u53d8\u79cd\u7684\u7814\u7a76\u6b63\u5728\u6301\u7eed\u8fdb\u884c\u4e2d\uff0c\u53ef\u4ee5\u8bf4\u5b83\u5df2\u7ecf\u6210\u4e3a\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7684\u4e00\u4e2a\u6d41\u6d3e\u3002<\/p>\n<p>\u6b64\u5916\uff0cFaunaDB\u662f\u4ee5Calvin\u4e3a\u57fa\u7840\u63d0\u4f9b\u7684\u6570\u636e\u5e93\u670d\u52a1\u3002\u7531\u4e8e\u5b83\u4e0d\u662f\u57fa\u4e8eSQL\uff0c\u6240\u4ee5\u5b83\u4e0d\u5728\u672c\u6b21\u7684NewSQL\u8303\u7574\u5185\uff0c\u4f46\u5b83\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u8da3\u7684\u670d\u52a1\u3002<\/p>\n<h2>1.4 \u5230\u76ee\u524d\u4e3a\u6b62\u7684\u603b\u7ed3<\/h2>\n<p>\u81ea2012\u5e74Spanner\u7684\u53d1\u5e03\u4ee5\u6765\uff0cNewSQL\u7684\u8d8b\u52bf\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p>\n<p>\u622a\u81f32020\u5e74\uff0cNewSQL\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<br \/>\nNewSQL\u662f\u4e00\u79cd\u5177\u6709\u5f3a\u4e00\u81f4\u6027\u4e14\u652f\u6301ACID\u4e8b\u52a1\u7684(\u5168\u7403\u8303\u56f4\u7684)\u5206\u5e03\u5f0fSQL\u6570\u636e\u5e93\u3002<\/p>\n<h1>2. \u65b0SQL\u7684\u67b6\u6784<\/h1>\n<p>NewSQL\u5c06\u4f20\u7edf\u7684\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u4e2d\u7684\u5404\u4e2a\u7ec4\u4ef6\u8fdb\u884c\u5206\u5272\uff0c\u4e3a\u6bcf\u4e2a\u7ec4\u4ef6\u63d0\u4f9b\u53ef\u6269\u5c55\u7684\u914d\u7f6e\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u4e00\u4e2a\u91cd\u8981\u7684\u7279\u70b9\u662f\u8be5\u7cfb\u7edf\u91c7\u7528\u4e86\u591a\u4e3b\u6a21\u5f0f\u3002\u8fd9\u5e76\u4e0d\u662f\u8bf4\u6709\u4e00\u4e2a\u670d\u52a1\u5668\u4f5c\u4e3a\u4e3b\u670d\u52a1\u5668\uff0c\u5176\u4ed6\u670d\u52a1\u5668\u4f5c\u4e3a\u6b21\u8981\u670d\u52a1\u5668\u6216\u53ea\u8bfb\u670d\u52a1\u5668\uff0c\u800c\u662f\u96c6\u7fa4\u4e2d\u7684\u6240\u6709\u670d\u52a1\u5668\u90fd\u4f5c\u4e3a\u4e3b\u670d\u52a1\u5668\u8fd0\u884c\uff08\u786e\u5207\u5730\u8bf4\uff0c\u6709\u4e00\u70b9\u4e0d\u540c\uff0c\u4f46\u4f1a\u5728\u7b2c\u4e09\u7ae0\u4ee5\u540e\u8be6\u7ec6\u4ecb\u7ecd\uff09\u3002<\/p>\n<p>\u603b\u4f53\u6765\u8bf4\uff0c\u5b83\u5177\u6709\u4ee5\u4e0b3\u4e2a\u7ec4\u4ef6\uff0c\u5e76\u4e14\u6bcf\u4e2a\u4ea7\u54c1\u5728\u5982\u4f55\u5c06\u5b83\u4eec\u90e8\u7f72\u5230\u670d\u52a1\u5668\u4e0a\u65b9\u9762\u7684\u8bbe\u8ba1\u7406\u5ff5\u90fd\u6709\u4e9b\u5fae\u5dee\u5f02\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u30af\u30a8\u30ea\u30a8\u30f3\u30b8\u30f3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5206\u6563\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30de\u30cd\u30fc\u30b8\u30e3<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30b9\u30c8\u30ec\u30fc\u30b8\u30a8\u30f3\u30b8\u30f3(\u5206\u6563\u30b9\u30c8\u30ec\u30fc\u30b8)<\/ul>\n<h2>2.1 Spanner\u7684\u67b6\u6784<\/h2>\n<p>\u8fd9\u7bc7\u535a\u5ba2\u8be6\u7ec6\u4ecb\u7ecd\u4e86Spanner\u7684\u67b6\u6784\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/53-0.png\" alt=\"Spanner\u30a4\u30e1\u30fc\u30b8\" \/><\/div>\n<hr \/>\n<p>Spanner\u662f\u4e00\u4e2a\u80fd\u591f\u7ba1\u7406\u9ad8\u8fbe2TB\u6570\u636e\u7684\u8282\u70b9\uff08Spanner Server\uff09\u548c\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edfColossus\u3002\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7gRPC\u6216REST API\u4e0e\u8282\u70b9\u8fdb\u884c\u8fde\u63a5\uff0c\u6bcf\u4e2a\u8282\u70b9\u4e0d\u4fdd\u5b58\u5b9e\u9645\u6570\u636e\uff0c\u800c\u662f\u901a\u8fc7\u7f51\u7edc\u8bbf\u95ee\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\u6765\u83b7\u53d6\u6570\u636e\u3002\u6839\u636e\u8bba\u6587\uff0cSpanner Server\u5305\u542b\u67e5\u8be2\u5f15\u64ce\u548c\u4e8b\u52a1\u7ba1\u7406\u5668\uff0c\u800cColossus\u8d1f\u8d23\u5206\u5e03\u5f0f\u5b58\u50a8\u5c42\uff08\u5728\u8bba\u6587\u4e2d\u88ab\u79f0\u4e3aTablet\uff0c\u800c\u4e0d\u662fSplit\uff09\u3002<\/p>\n<p>\u6bcf\u4e2a\u8282\u70b9\u90fd\u6709\u4e09\u4e2a\u526f\u672c\uff0c\u8282\u70b9\u4e4b\u95f4\u7684\u590d\u5236\u662f\u901a\u8fc7Paxos\u7b97\u6cd5\u6765\u5b9e\u73b0\u7684\u3002\u6839\u636e\u8fd9\u7bc7\u535a\u5ba2\u7684\u5199\u4f5c\u65f6\u95f4\uff0c\u76ee\u524d\u53ea\u6709\u7f8e\u56fd\u5730\u533a\u53ef\u4ee5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u800c\u4e9a\u6d32\u5730\u533a\u7b49\u5730\u53ea\u80fd\u8fdb\u884c\u53ea\u8bfb\u64cd\u4f5c\uff08\u5f53\u524d\u60c5\u51b5\u5c1a\u672a\u8c03\u67e5\uff09\u3002<\/p>\n<p>\u5728\u5173\u7cfb\u6570\u636e\u5e93\uff08RDB\uff09\u4e2d\uff0c\u8868\u88ab\u5206\u5272\u6210Sharding\u4e2d\u79f0\u4e3ashard\u7684\u5355\u5143\u3002\u8fd9\u4e9bshard\u7531\u4efb\u4e00\u8282\u70b9\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n<p>\u7531\u4e8eSplit\u7684\u5206\u5e03\u60c5\u51b5\u5bf9\u4e8eSpanner\u7684\u6027\u80fd\u6709\u7740\u91cd\u8981\u7684\u5f71\u54cd\uff0c\u56e0\u6b64\u5bf9\u4e8e\u5b9a\u4e49Split\u7684\u8bbe\u7f6e\u6210\u4e3a\u4e86\u91cd\u8981\u7684\u8bbe\u8ba1\u8981\u70b9\u3002<\/p>\n<p>\uff082020\/3\/2\u8ffd\u8a18\uff09<br \/>\n\u636e\u6587\u6863\u8bb0\u8f7d\uff0cSpanner\u5f53\u7136\u53ef\u4ee5\u901a\u8fc7SQL\u64cd\u4f5c\uff0c\u5e76\u4e14\u652f\u6301ANSI2011\u6807\u51c6\u7684\u6269\u5c55SQL\u3002<\/p>\n<h2>2.2 YugabyteDB\u7684Spanner\u514b\u9686\u67b6\u6784\u3002<\/h2>\n<p>\u5c3d\u7ba1YugaByteDB\u6cbf\u88ad\u4e86Spanner\u7684\u8bbe\u8ba1\u7406\u5ff5\uff0c\u4f46\u5176\u7ec4\u4ef6\u5e03\u5c40\u4e0e\u539f\u59cb\u8bbe\u8ba1\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fYugaByteDB\u7684\u4f53\u7cfb\u7ed3\u6784\u56fe\u3002\u867d\u7136SQL\u67e5\u8be2\u5f15\u64ce\u3001\u5206\u5e03\u5f0f\u4e8b\u52a1\u7ba1\u7406\u5668\u548c\u5b58\u50a8\u5f15\u64ce\u5728\u5c42\u9762\u4e0a\u662f\u72ec\u7acb\u7684\uff0c\u4f46\u5b83\u4eec\u5728\u96c6\u7fa4\u5185\u7684\u8282\u70b9\u4e0a\u5747\u4ee5\u7edf\u4e00\u7684\u65b9\u5f0f\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/64-0.png\" alt=\"Yugabyte\u30a4\u30e1\u30fc\u30b8\" \/><\/div>\n<hr \/>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u4e0eCompute\u8282\u70b9\u901a\u8fc7\u7f51\u7edc\u8bbf\u95ee\u5206\u5e03\u5f0f\u5b58\u50a8\u4e0d\u540c\uff0c\u6bcf\u4e2a\u8282\u70b9\u90fd\u6709\u672c\u5730\u5b58\u50a8\u5f15\u64ce\uff08\u79f0\u4e3a\u57fa\u4e8eRocksDB\u7684DocDB\uff09\uff0c\u4e0a\u5c42\u5e94\u7528\u5c06\u8bbf\u95ee\u8fd9\u4e9b\u5f15\u64ce\u3002<\/p>\n<p>\u6570\u636e\u7684\u590d\u5236\u662f\u5728\u8282\u70b9\u4e4b\u95f4\u8fdb\u884c\u7684\uff0c\u56e0\u6b64\u4ece\u6574\u4f53\u4e0a\u770b\uff0c\u5b83\u626e\u6f14\u7740\u5206\u5e03\u5f0f\u5b58\u50a8\u7684\u7ed3\u6784\uff0c\u4f46\u8fd9\u79cd\u7d27\u5bc6\u5ea6\u662f\u4e0eSpanner\u7684\u6700\u5927\u4e0d\u540c\u4e4b\u5904\u3002<\/p>\n<p>\u5bf9\u4e8e\u90a3\u4e9b\u4e0d\u80fd\u50cfGoogle Cloud\u4e00\u6837\u63d0\u4f9b\u5927\u89c4\u6a21\u5206\u6563\u5b58\u50a8\u7684\u666e\u901a\u7528\u6237\u800c\u8a00\uff0c\u8fd9\u770b\u8d77\u6765\u662f\u4e00\u79cd\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u4f46\u4e5f\u53ef\u80fd\u5b58\u5728\u65e0\u6cd5\u5206\u522b\u6269\u5c55\u8ba1\u7b97\u548c\u5b58\u50a8\u7684\u95ee\u9898\u3002<\/p>\n<p>(2020\/3\/2\u8ffd\u8a18)<br \/>\n\u9664\u4e86\u5177\u5907SQL\u67e5\u8be2\u5f15\u64ce\u5916\uff0cYugaByteDB\u8fd8\u62e5\u6709\u952e\u503c\u67e5\u8be2\u5f15\u64ce\u3002SQL API\u88ab\u79f0\u4e3aYSQL\uff0c\u76ee\u524d\u4e0ePostgreSQL11.2\u517c\u5bb9\u3002\u952e\u503c\u7c7b\u578b\u7684API\u88ab\u79f0\u4e3aYCQL\uff0c\u57fa\u4e8eCassandra\u67e5\u8be2\u8bed\u8a00\uff08CQL\uff09\u8fdb\u884c\u5f00\u53d1\u3002<\/p>\n<h3>2.2.1 \u87d1\u8782\u6570\u636e\u5e93<\/h3>\n<p>CockroachDB\u91c7\u7528\u4e0eYugaByteDB\u76f8\u540c\u7684\u96c6\u7fa4\u7ed3\u6784\uff0c\u5c06\u4e09\u4e2a\u7ec4\u4ef6\u7d27\u5bc6\u8026\u5408\u5e76\u90e8\u7f72\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u3002<\/p>\n<p>CockroachDB\u4e0eYugaByteDB\u7684\u533a\u522b\u5728\u4e8e\uff0cCockroachDB\u901a\u8fc7\u5c063\u4e2a\u7ec4\u4ef6\u6253\u5305\u6210\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002\u8fd9\u53d6\u51b3\u4e8e\u8bbe\u8ba1\u601d\u60f3\uff0c\u5b83\u53ef\u4ee5\u662f\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6587\u4ef6\uff08\u8fdb\u7a0b\uff09\u6216\u8005\u662f\u591a\u4e2a\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4f46\u4e24\u5bb6\u4f9b\u5e94\u5546\u90fd\u58f0\u79f0\u5b83\u4eec\u7684\u67b6\u6784\u5177\u6709\u4f18\u52bf\u3002<\/p>\n<p>(2020\/3\/2\u8ffd\u8a18)<br \/>\nCockroachDB\u548cYugaByteDB\u4e00\u6837\uff0c\u4e5f\u4e0ePostgreSQL\u517c\u5bb9\u3002\u6839\u636e\u8fd9\u7bc7\u6587\u6863\uff0c\u622a\u81f32020\u5e742\u6708\uff0c\u660e\u786e\u6307\u51faCockroachDB\u4e0ePostgreSQL 9.6\u517c\u5bb9\u3002<\/p>\n<h2>2.3 Spanner\u514b\u9686\u7684\u67b6\u6784: TiKV\/TiDB<\/h2>\n<p>\u5173\u4e8e TiDB\uff0c\u5b83\u4e0e\u4e4b\u524d\u4ecb\u7ecd\u7684 CockroachDB \u548c YugaByteDB \u7684\u7ed3\u6784\u6709\u76f8\u5f53\u5927\u7684\u533a\u522b\u3002<br \/>\n\u8fd9\u662f\u56e0\u4e3a\uff0c\u524d\u8ff0\u7684\u4e24\u4e2a Spanner \u514b\u9686\u662f\u5c06 SQL \u67e5\u8be2\u5f15\u64ce\u548c\u5b58\u50a8\u5f15\u64ce\u7d27\u5bc6\u7ed3\u5408\uff0c\u5e76\u90e8\u7f72\u5728\u96c6\u7fa4\u4e2d\u7684\u8282\u70b9\u4e0a\uff0c\u800c TiDB \u5219\u91c7\u7528\u4e86\u7c7b\u4f3c Spanner \u7684\u7ed3\u6784\uff0c\u5c06\u8ba1\u7b97\u8282\u70b9\u548c\u5206\u5e03\u5f0f\u5b58\u50a8\u5206\u79bb\u3002<\/p>\n<p>\u8fd9\u5f20\u56fe\u5c55\u793a\u4e86TiDB\u7684\u67b6\u6784\u3002\u4ece\u8fd9\u5f20\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0cTiDB\u53ea\u662fTiKV\u5206\u5e03\u5f0f\u952e\u503c\u5b58\u50a8\u7684\u751f\u6001\u7cfb\u7edf\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/78-0.png\" alt=\"TiDB\" \/><\/div>\n<hr \/>\n<p>TiKV\u51e0\u4e4e\u5b8c\u5168\u5b9e\u73b0\u4e86\u4f5c\u4e3a\u5206\u6563\u6570\u636e\u5e93\u7684\u529f\u80fd\uff0cTiDB\u4ec5\u4ec5\u63d0\u4f9bMySQL\u63a5\u53e3\uff0c\u5e76\u63d0\u4f9b\u5bf9\u5e95\u5c42\u5206\u6563\u5b58\u50a8\u5f15\u64ce\uff08\u5373TiKV\uff09\u7684\u8bbf\u95ee\u3002<\/p>\n<p>\uff082020\/3\/2\u9644\u6ce8\uff09<br \/>\n\u5173\u4e8eSQL\u67e5\u8be2\u5f15\u64ce\uff0cTiDB\u4e0e\u524d\u8ff0\u7684\u4e24\u4e2aSpanner\u514b\u9686\u4e0d\u540c\uff0c\u5b83\u662f\u517c\u5bb9MySQL\u7684\u3002<br \/>\n\u6839\u636e\u6587\u6863\uff0c\u76ee\u524d\u5b83\u662f\u517c\u5bb9MySQL5.7\u7684\u3002<\/p>\n<h3>2.3.1 TiKV<br \/>\n2.3.1 TiKV<\/h3>\n<p>\u90a3\u4e48\uff0c\u8ba9\u6211\u4eec\u66f4\u8be6\u7ec6\u5730\u4e86\u89e3\u4e00\u4e0bTiDB\u7684\u7ec4\u6210\u90e8\u5206\u4e4b\u4e00\uff0c\u5373TiKV\u3002<\/p>\n<p>TiKV\u672c\u8eab\u4e0d\u5177\u5907SQL\u63a5\u53e3\u3002\u5728\u4e0b\u56fe\u4e2d\u5c55\u793a\u7684TiKV\u67b6\u6784\u4e2d\uff0c\u82e5\u88ab\u7528\u4f5cTiDB\u7684\u540e\u7aef\uff0c\u56fe\u4e2d\u7684Client\u5c06\u662fTiDB\uff0c\u5e76\u5728\u6b64\u5904\u5411\u771f\u6b63\u7684\u5ba2\u6237\u7aef\u63d0\u4f9b\u4e0eMySQL\u517c\u5bb9\u7684SQL\u63a5\u53e3\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/86-0.png\" alt=\"TiKV\" \/><\/div>\n<hr \/>\n<p>\u4e0a\u8ff0\u7684TiKV\u8282\u70b9\u5177\u6709\u4e8b\u52a1\u7ba1\u7406\u5668\u548c\u5b58\u50a8\u5f15\u64ce\uff0c\u53ef\u4ee5\u5728\u5206\u5e03\u5f0f\u7684Raft Group\u5185\u90e8\u5bf9\u6570\u636e\u8fdb\u884c\u590d\u5236\u3002<br \/>\n\u5b58\u50a8\u5f15\u64ce\u7c7b\u4f3c\u4e8eCockroachDB\uff0c\u4f7f\u7528RocksDB\u3002<\/p>\n<p>\u7136\u5f8c\uff0c\u5728\u9019\u5f35\u5716\u4e2d\uff0c\u5b58\u5728\u8457\u5176\u4ed6Spanner\u514b\u9686\u6240\u6c92\u6709\u7684PD\uff08\u5b58\u653e\u9a45\u52d5\u7a0b\u5f0f\uff09\u9019\u500b\u5143\u4ef6\u3002\u9019\u500bPD\u662fTiKV\u7684\u53e2\u96c6\u7ba1\u7406\u5668\uff0c\u7528\u65bc\u7ba1\u7406\u6578\u64da\u7684\u914d\u7f6e\u3002\u540c\u6642\uff0c\u5728\u4e8b\u52d9\u8655\u7406\u4e2d\uff0c\u9084\u6709\u4e00\u500b\u91cd\u8981\u7684\u6642\u9593\u6233Oracle\uff08TSO\uff09\u4e5f\u5b58\u5728\u65bc\u9019\u88e1\uff08TSO\u672c\u8eab\u7684\u8aaa\u660e\u5c07\u5728\u7a0d\u5f8c\u7684\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u63d0\u4f9b\uff09\u3002<\/p>\n<p>\u7531\u4e8e\u8fd9\u4e2aPD\u7ec4\u4ef6\u975e\u5e38\u91cd\u8981\uff0c\u6240\u4ee5\u5b83\u672c\u8eab\u4e5f\u91c7\u7528\u4e86Raft\u5197\u4f59\u673a\u5236\uff08\u8fd9\u79cd\u67b6\u6784\u5728\u524d\u9762\u7684TiDB\u67b6\u6784\u4e2d\u6709\u8be6\u7ec6\u63cf\u8ff0\uff09\u3002<\/p>\n<h2>2.4 \u603b\u7ed3\u81f3\u6b64<\/h2>\n<p>Spannar\u53ca\u5176\u514b\u9686\u4f53\u901a\u8fc7\u5c06\u4e4b\u524d\u6574\u5408\u5728\u5355\u4e00\u6570\u636e\u5e93\u4e2d\u7684\u7ec4\u4ef6\u8fdb\u884c\u5206\u5272\uff0c\u5e76\u91c7\u7528\u53ef\u6269\u5c55\u7684\u67b6\u6784\u3002<\/p>\n<p>Spanner\u4f7f\u7528SQL\u67e5\u8be2\u5f15\u64ce\u548c\u4e8b\u52a1\u7ba1\u7406\u5668\uff0c\u5e76\u5c06\u5b58\u50a8\u5206\u6563\u5728\u7f51\u7edc\u4e0a\u8fdb\u884c\u8bbf\u95ee\u3002<br \/>\nYugaByteDB\u548cCockroachDB\u5c06\u4e09\u4e2a\u7ec4\u4ef6\u653e\u7f6e\u5728\u8282\u70b9\u4e0a\uff0c\u5e76\u901a\u8fc7\u7ec4\u5408\u5b83\u4eec\u6765\u5b9e\u73b0\u6269\u5c55\u6027\u3002<br \/>\nTiDB\/TiKV\u4e0e\u4e24\u8005\u90fd\u4e0d\u540c\uff0c\u5b83\u901a\u8fc7\u7ec4\u5408\u65e0\u72b6\u6001SQL\u67e5\u8be2\u5f15\u64ceTiDB\u548c\u5206\u5e03\u5f0fKVS TiKV\u5b9e\u73b0\u4e86\u7c7b\u4f3cSpanner\u7684\u67b6\u6784\u3002<\/p>\n<h1>3. \u5c06NewSQL\u4e0e\u4f20\u7edf\u6570\u636e\u5e93\u8fdb\u884c\u6bd4\u8f83\u3002<\/h1>\n<p>\u4e3a\u4e86\u6bd4\u8f83NewSQL\u4e0e\u4e4b\u524d\u7684\u6570\u636e\u5e93\u6709\u4ec0\u4e48\u4e0d\u540c\uff0c\u6211\u4eec\u5c06\u6574\u7406\u5355\u4f53\u5f0f\u5173\u7cfb\u578b\u6570\u636e\u5e93(RDBMS)\u548cNoSQL(Cassandra)\u7684\u7279\u70b9\u3002\u5728\u6574\u7406\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Spanner\u7684\u7279\u70b9(\u5728\u524d\u8ff0\u76843\u4e2a\u7279\u70b9\u4e4b\u5916\u8fd8\u6dfb\u52a0\u4e86\u53ef\u6269\u5c55\u6027)\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5f37\u3044\u6574\u5408\u6027<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30b5\u30dd\u30fc\u30c8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5206\u6563\u53ef\u80fd\u6027\u3001\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/ul>\n<p>\u6b64\u5916\uff0c(\u5c3d\u7ba1\u5df2\u7ecf\u6210\u4e3a\u9648\u8bcd\u6ee5\u8c03) \u6709\u8da3\u7684\u4e00\u70b9\u662f\uff0c\u6211\u4eec\u5e0c\u671b\u8fbe\u5230CAP\u5b9a\u7406\u4e2d\u7684\u54ea\u4e2a\u6761\u4ef6\u3002<\/p>\n<h2>3.1 \u539f\u751fRDBMS\u7684\u7279\u70b9<\/h2>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u8003\u8651\u7684\u662fOracle Database\u7b49\u4e13\u6709\u8f6f\u4ef6\uff0c\u6216\u8005\u50cfPostgreSQL\u548cMySQL\u8fd9\u6837\u7684\u5f00\u6e90RDBMS\u3002\u57fa\u4e8e\u5386\u53f2\u539f\u56e0\uff0c\u5355\u4f53\u5f0f\u7684RDBMS\u5177\u6709\u4ee5\u4e0b\u4f18\u7f3a\u70b9\u3002<\/p>\n<hr \/>\n<p>\u3010\u4f18\u70b9\u3011<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u6a19\u6e96\u3092\u6e96\u62e0\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30ce\u30fc\u30c9\u30ed\u30fc\u30ab\u30eb\u306a\u74b0\u5883\u4e0b\u3067&#8221;\u59a5\u5f53\u306a&#8221;\u6574\u5408\u6027(RC\u3001RR) \u3092\u5b9f\u73fe\u3002<\/ul>\n<p>\u3010\u7f3a\u70b9\u3011<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">(\u4e00\u822c\u7684\u306b\u6027\u80fd\u3092\u512a\u5148\u3057\u3066)\u5f37\u3044\u6574\u5408\u6027\u3092\u4fdd\u8a3c\u305b\u305a\u3001\u30a2\u30ce\u30de\u30ea\u30fc\u304c\u767a\u751f\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u9650\u5b9a\u3055\u308c\u305f\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3002\u7279\u306bWrite\u30d8\u30d3\u30fc\u306b\u5f31\u3044\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u65ad\u306b\u5f31\u3044\u3002\u4f4e\u9045\u5ef6\u30fb\u9ad8\u4fe1\u983c\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u524d\u63d0\u3068\u3059\u308b\u3002<\/ul>\n<hr \/>\n<p>\u5355\u4e00\u4e2d\u5fc3\u5316\u7684\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08RDBMS\uff09\u5bf9\u4e8e\u6c34\u5e73\u6269\u5c55\u6027\u8f83\u5f31\uff0c\u901a\u5e38\u91c7\u7528\u7eb5\u5411\u6269\u5c55\u7684\u65b9\u5f0f\u8fdb\u884c\u6269\u5c55\u3002\u6b64\u5916\uff0c\u8fd0\u7ef4\u901a\u5e38\u53ea\u8003\u8651\u5355\u4e2a\u6570\u636e\u4e2d\u5fc3\uff08\u6216\u8005\u5355\u4e2a\u673a\u67b6\uff09\uff0c\u5373\u4f7f\u91c7\u7528\u4e86\u9ad8\u53ef\u7528\u6027\uff08HA\uff09\u7ed3\u6784\uff0c\u8282\u70b9\u4e4b\u95f4\u7684\u4e92\u8fde\u4e5f\u9700\u4f7f\u7528\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u53ef\u9760\u6027\u7684\u8bbe\u5907\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u901a\u8fc7\u9650\u5236\u53ef\u6269\u5c55\u6027\uff0c\u53ef\u4ee5\u5728\u5176\u8303\u56f4\u5185\u53d6\u5f97\u4e00\u79cd\u5e73\u8861\uff0c\u5305\u62ec\u4e00\u81f4\u6027\u3001\u53ef\u7528\u6027\u548c\u6027\u80fd\u7b49\u3002<\/p>\n<p>\u4eceCAP\u5b9a\u7406\u6765\u8bf4\uff0c\u53ef\u4ee5\u8bf4\u5355\u4f53\u5f0fRDBMS\u662fAC\u7684\u3002<\/p>\n<h3>3.1.1 \u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08RDBMS\uff09\u662f\u5426\u6ca1\u6709\u53ef\u6269\u5c55\u6027\uff1f<\/h3>\n<p>\u5728\u8ba8\u8bba\u4f20\u7edf\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u7f3a\u70b9\u4e4b\u524d\uff0c\u4e3a\u4e86\u516c\u6b63\u8d77\u89c1\uff0c\u6211\u8ba4\u4e3a\u6211\u4eec\u4e5f\u9700\u8981\u63d0\u53ca\u4e00\u4e0b\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u6c34\u5e73\u6269\u5c55\u65b9\u6cd5\u3002<\/p>\n<p>\u5982\u679c\u4ee5\u591a\u4e2a\u5730\u533a\u6216\u5730\u7406\u5206\u6563\u4e3a\u524d\u63d0\uff0c\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf(RDBMS)\u5f88\u96be\u5b9e\u73b0\u6c34\u5e73\u6269\u5c55\uff0c\u5e76\u4e14\u53ea\u5728\u6709\u9650\u7684\u6761\u4ef6\u4e0b(\u8fc7\u53bb\u901a\u5e38\u5b58\u5728\u7684\u6761\u4ef6)\u624d\u5b58\u5728\u5f00\u53d1RDBMS\u6269\u5c55\u6280\u672f\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<h4>3.1.1.1 \u590d\u5236<\/h4>\n<p>\u6700\u5e38\u7528\u7684RDBMS\u7684\u6269\u5c55\u65b9\u6cd5\u5e94\u8be5\u662f\u590d\u5236\u3002\u5b83\u5df2\u7ecf\u96c6\u6210\u5230\u8bb8\u591aDBMS\u4e2d\uff0c\u5e76\u4e14\u4f7f\u7528\u8d77\u6765\u4e5f\u5f88\u5bb9\u6613\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u663e\u793a\u4e86PostgreSQL\u7684\u6d41\u590d\u5236\u914d\u7f6e\u7684\u56fe\u8868\uff0c\u5982\u6b64\u901a\u8fc7\u4ece\u4e3b\u8282\u70b9\uff08\u56fe\u4e2d\u7684M\uff09\u5411\u591a\u4e2a\u4ece\u8282\u70b9\uff08S\uff09\u4f20\u8f93\u65e5\u5fd7\uff08WAL\uff09\u4ee5\u5b9e\u73b0\u6570\u636e\u540c\u6b65\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/116-0.png\" alt=\"image.png\" \/><\/div>\n<hr \/>\n<p>\u4e0a\u56fe\u4e2d\u7684Master\u8282\u70b9\u53ef\u4ee5\u5904\u7406Read\u548cWrite\u64cd\u4f5c\uff0c\u800cSlave\u8282\u70b9\u53ea\u80fd\u5904\u7406Read\u64cd\u4f5c\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u8fd9\u79cd\u590d\u5236\u5f62\u5f0f\u53ea\u80fd\u5b9e\u73b0Read\u67e5\u8be2\u7684\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<p>\u5728\u540c\u671f\u6a21\u5f0f\u4e0b\uff0c\u8bbf\u95eeSlave\u8282\u70b9\u65f6\u6240\u89c1\u7684\u6570\u636e\u4f1a\u6709\u5dee\u5f02\uff0c\u5b8c\u5168\u540c\u6b65\uff08\u5373Master\u7684Commit\u9700\u8981\u7b49\u5f85Slave\u7684\u6570\u636eCommit\uff09\u4f1a\u5f71\u54cd\u53ef\u7528\u6027\u548c\u6027\u80fd\uff0c\u56e0\u6b64\u5f80\u5f80\u91c7\u7528\u51c6\u540c\u6b65\uff08\u5373Master\u7684Commit\u9700\u8981\u7b49\u5f85\u5c06\u65e5\u5fd7\u4f20\u8f93\u5230Slave\u5b8c\u6bd5\uff09\u7684\u65b9\u5f0f\u3002<\/p>\n<p>\u9664\u4e86\u901a\u8fc7\u7269\u7406\u65e5\u5fd7\u4f20\u8f93\uff08\u5982\u91cd\u505a\u65e5\u5fd7\u6216WAL\uff09\u8fdb\u884c\u590d\u5236\u5916\uff0c\u8bb8\u591a\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u8fd8\u652f\u6301\u901a\u8fc7SQL\u7ea7\u522b\u5b9e\u73b0\u7684\u903b\u8f91\u590d\u5236\u6765\u5b9e\u73b0\u540c\u6b65\uff0c\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u4f1a\u5bfc\u81f4\u4e0e\u4e0a\u8ff0\u76f8\u4f3c\u7684\u6570\u636e\u540c\u6b65\u6ede\u540e\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5c31\u53ef\u7528\u6027\u800c\u8a00\uff0c\u5f53Master\u8282\u70b9\u53d1\u751f\u6545\u969c\u65f6\uff0c\u4f1a\u51fa\u73b0Slave\u8282\u70b9\u7684\u664b\u5347\uff08\u5373\u6240\u8c13\u7684FailOver\uff09\uff0c\u4f46\u4e5f\u6709\u4eba\u5bf9\u6b64\u65f6\u7684\u505c\u673a\u65f6\u95f4\u8868\u793a\u62c5\u5fe7\u3002\u4f5c\u4e3a\u89e3\u51b3\u65b9\u6848\uff0c\u540e\u6587\u4e2d\u63d0\u5230\u7684\u591a\u4e3b\u8282\u70b9\u65b9\u6848\u4e5f\u88ab\u91c7\u7528\u3002<\/p>\n<h4>3.1.1.2 \u5206\u7247<\/h4>\n<p>\u53e6\u4e00\u79cd\u53e4\u8001\u7684\u6269\u5c55\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08RDBMS\uff09\u7684\u65b9\u6cd5\u662f\u5206\u7247\u3002<\/p>\n<p>\u8fd9\u662f\u4e00\u79cd\u5728NewSQL\u4e2d\u91c7\u7528\u7684\u6280\u672f\uff0c\u5b83\u5c06\u6570\u636e\u5206\u6563\u5230\u8bb8\u591a\u8282\u70b9\u4e0a\uff0c\u5e76\u901a\u8fc7\u8fde\u63a5\u5b83\u4eec\u6765\u5c55\u793a\u4e00\u4e2a\u903b\u8f91\u4e0a\u5de8\u5927\u7684\u6570\u636e\u5e93\u3002\u6700\u8fd1\uff0c\u5b83\u88ab\u5e94\u7528\u4e8eCNCF\u7684Graduated Project\uff0c\u5982Vitess\u548cAzure HyperScale\uff08Citus\uff09\uff0c\u518d\u6b21\u5f15\u8d77\u4e86\u5173\u6ce8\u3002<\/p>\n<p>\u4e0b\u56fe\u5c55\u793a\u4e86Vitess\u7684\u67b6\u6784\u56fe\uff0c\u5176\u4e2dSharding\u4e2d\u5b58\u5728\u4e00\u4e2a\u63a5\u53d7\u6240\u6709SQL\u8bf7\u6c42\u7684\u534f\u8c03\u8282\u70b9\uff08\u56fe\u4e2d\u7684V\uff09\u3002\u901a\u5e38\u7684\u6570\u636e\u5e93\u5b9e\u4f8b\u4f4d\u4e8e\u8be5\u8282\u70b9\u4e0b\u65b9\u4ece\u5c5e\uff0c\u5e76\u4e14\u6bcf\u4e2a\u5b9e\u4f8b\u53ea\u4fdd\u5b58\u5206\u914d\u7ed9\u81ea\u5df1\u8303\u56f4\u5185\u7684\u6570\u636e\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/127-0.png\" alt=\"image.png\" \/><\/div>\n<hr \/>\n<p>\u53ea\u6709\u4e0e\u8bfb\/\u5199\u76f8\u5173\u7684\u5b9e\u4f8b\u624d\u4f1a\u88ab\u53d1\u9001\uff0c\u901a\u8fc7\u5c06\u6570\u636e\u8303\u56f4\u7ec6\u5206\u5e76\u589e\u52a0\u5b9e\u4f8b\u6570\u91cf\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6c34\u5e73\u6269\u5c55\u7684\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<p>\u5728\u4e2d\u56fd\u7684\u672c\u571f\u610f\u601d\u91cc\uff0c\u4f60\u53ef\u4ee5\u8fd9\u6837\u8868\u8fbe\uff1a<\/p>\n<p>\u5728\u4e00\u4e2a\u65b9\u9762\uff0c\u95ee\u9898\u5728\u4e8eCoordinator\u90e8\u5206\u7684\u53ef\u7528\u6027\u548c\u6269\u5c55\u6027\u3002<br \/>\n\u5728\u56fe\u8868\u4e2d\uff0c\u8fd9\u662f\u4e00\u4e2a\u5355\u70b9\u6545\u969c\uff08SPOF\uff09\uff0c\u56e0\u6b64\u5728\u5b9e\u9645\u8fd0\u8425\u4e2d\u7ecf\u5e38\u4f7f\u7528\u9ad8\u53ef\u7528\u6027\uff08HA\uff09\u914d\u7f6e\uff0c\u4f46\u4ecd\u7136\u4f1a\u53d1\u751f\u6545\u969c\u8f6c\u79fb\uff0c\u5c31\u50cf\u590d\u5236\u4e00\u6837\u3002<br \/>\n\u5b9e\u9645\u7684\u6570\u636e\u5904\u7406\u7531\u4e0b\u5c42\u5b9e\u4f8b\u8d1f\u8d23\uff0c\u4f46\u662f\u534f\u8c03\u5668\u8d1f\u8d23\u5904\u7406\u591a\u4e2a\u5b9e\u4f8b\u6570\u636e\u7684\u805a\u5408\u7b49\u5904\u7406\uff0c\u56e0\u6b64\u5728\u6027\u80fd\u65b9\u9762\u53ef\u80fd\u6210\u4e3a\u74f6\u9888\u3002<\/p>\n<p>\u6b64\u5916\uff0cSharding\u7684\u6700\u5927\u554f\u984c\u53ef\u80fd\u5728\u65bc\u6578\u64da\u8a2d\u8a08\u7684\u8907\u96dc\u6027\u3002\u8981\u6839\u64da\u61c9\u7528\u7a0b\u5e8f\u7684\u8a2a\u554f\u6a21\u5f0f\u9069\u7576\u5730\u5206\u5272\u548c\u914d\u7f6e\u6578\u64da\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u6700\u7406\u60f3\u7684\u60c5\u6cc1\u662f\u5c07\u6240\u6709\u64cd\u4f5c\u9650\u5236\u5728\u55ae\u500b\u5be6\u4f8b\u4e2d\uff0c\u4e26\u5c01\u9589\u5728\u4e8b\u52d9\u7bc4\u570d\u5167\u3002\u9019\u4e00\u9ede\u8aaa\u8d77\u4f86\u5bb9\u6613\uff0c\u4f46\u5be6\u969b\u57f7\u884c\u8d77\u4f86\u975e\u5e38\u56f0\u96e3\u3002<\/p>\n<h4>3.1.1.3 \u591a\u4e3b\u63a7\u5236<\/h4>\n<p>\u4e0e\u590d\u5236\u548cSharding\u76f8\u6bd4\uff0c\u6784\u5efa\u548c\u8fd0\u7ef4\u96be\u5ea6\u8f83\u9ad8\u7684\u662f\u591a\u4e3b\u6570\u636e\u5e93\u96c6\u7fa4\u3002<\/p>\n<p>\u4f5c\u4e3a\u4e2a\u4eba\u89c2\u70b9\uff0c\u76ee\u524d\u6700\u4e3a\u6d41\u884c\u7684\u591a\u4e3b\u6570\u636e\u5e93\u96c6\u7fa4\u5e94\u8be5\u662fOracle\u7684RAC\uff08Real Application Cluster\uff09\u3002\u5c3d\u7ba1\u6709\u5f88\u591a\u5f02\u8bae\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fOracle RAC\u7684\u914d\u7f6e\u56fe\u50cf\uff0c\u901a\u5e38\u6765\u8bf4\uff0cRAC\u662f\u88ab\u79f0\u4e3a&#8221;\u5171\u4eab\u78c1\u76d8\u578b\u6570\u636e\u5e93\u96c6\u7fa4&#8221;\u7684\u3002<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/137-0.png\" alt=\"image.png\" \/><\/div>\n<hr \/>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u4e0d\u4f1a\u63d0\u4f9bOracle RAC\u7684\u8be6\u7ec6\u6280\u672f\u89e3\u91ca\uff0c\u4f46\u662f\u4f5c\u4e3a\u6784\u6210\u7684\u4e00\u90e8\u5206\uff0c\u7528\u4e8e\u6301\u4e45\u5316\u6570\u636e\u7684\u5b58\u50a8\u53ea\u6709\u4e00\u4e2a\uff08\u5728\u903b\u8f91\u4e0a\uff09\uff0c\u5e76\u4e14\u5728\u8f83\u9ad8\u7ea7\u522b\u7684\u8282\u70b9\u4e4b\u95f4\u91c7\u7528\u540c\u6b65\u6570\u636e\u5e93\u7f13\u51b2\u533a\uff08\u5373\u5185\u5b58\uff09\u7684\u65b9\u5f0f\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u4efb\u4f55\u8282\u70b9\u90fd\u53ef\u4ee5\u5904\u7406\u8bfb\/\u5199\u64cd\u4f5c\uff0c\u5e76\u4e14\u901a\u8fc7\u589e\u52a0\u8282\u70b9\u53ef\u4ee5\u5b9e\u73b0\u6a2a\u5411\u6269\u5c55\u3002<\/p>\n<p>\u7136\u800c\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e3a\u4e86\u5b9e\u73b0\u7f13\u51b2\u533a\u540c\u6b65\uff0c\u9700\u8981\u5feb\u901f\u7a33\u5b9a\u7684\u4e92\u8fde\uff0c\u5e76\u4e14\u5728\u6269\u5c55\u5230\u5927\u7ea610\u53f0\u670d\u52a1\u5668\u4e4b\u540e\uff0c\u65e0\u6cd5\u5b9e\u73b0\u5206\u5e03\u5f0fSQL\u6570\u636e\u5e93\u5728\u8d85\u8fc7100\u53f0\u89c4\u6a21\u4e0a\u7684\u6280\u672f\u3002<\/p>\n<p>\u540c\u6837\uff0c\u5728\u53ef\u7528\u6027\u65b9\u9762\uff0c\u5f53\u8282\u70b9\u53d1\u751f\u6545\u969c\u65f6\uff0c\u4f1a\u8fdb\u884c\u79f0\u4e3aRAC\u91cd\u6784\u7684\u5904\u7406\uff0c\u8fd9\u5c06\u82b1\u8d39\u76f8\u5f53\u957f\u7684\u65f6\u95f4\u3002\u5171\u4eab\u5b58\u50a8\u76ee\u524d\u4e5f\u4f7f\u7528\u4e86\u8bf8\u5982ASM\u7b49\u6280\u672f\uff0c\u4e0d\u518d\u662f\u5355\u4e00\u6545\u969c\u70b9\uff0c\u4f46\u8fd9\u4e5f\u662f\u4e00\u4e2a\u5f15\u8d77\u53ef\u6269\u5c55\u6027\u62c5\u5fe7\u7684\u65b9\u9762\u3002<\/p>\n<p>MySQL\u4e5f\u652f\u6301\u88ab\u79f0\u4e3aGroup Replication\u7684\u529f\u80fd\uff0c\u5b83\u5141\u8bb8\u591a\u4e3b\u6a21\u5f0f\u3002\u7136\u800c\uff0c\u4e0eRAC\u76f8\u6bd4\uff0c\u8fd9\u4e2a\u529f\u80fd\u66f4\u52a0\u53d7\u9650\uff0c\u91cd\u70b9\u4e0d\u662f\u6027\u80fd\u65b9\u9762\uff0c\u800c\u662f\u7528\u4e8e\u907f\u514d\u5728\u6545\u969c\u8f6c\u79fb\u65f6\u7684\u53ef\u7528\u6027\u964d\u4f4e\u7684\u6280\u672f\uff08\u7531\u4e8e\u6211\u7684MySQL\u77e5\u8bc6\u6709\u9650\uff0c\u6545\u8be6\u7ec6\u60c5\u51b5\u4e0d\u505a\u8d58\u8ff0\uff09\u3002<\/p>\n<h2>3.2 NoSQL\u7684\u7279\u70b9<\/h2>\n<p>\u7531\u4e8e\u6211\u7f3a\u4e4f\u5173\u4e8eNoSQL\u7684\u5168\u9762\u89e3\u91ca\u77e5\u8bc6\uff0c\u56e0\u6b64\u5728\u8fd9\u91cc\u6211\u5c06\u4ee5Cassandra\u4e3a\u4f8b\uff0c\u56de\u987e\u5176\u7279\u6027\u3002\u540c\u65f6\uff0c\u7531\u4e8e\u6211\u5bf9\u4e8eCassandra\u7684\u89e3\u91ca\u53ef\u80fd\u57fa\u4e8e\u4e00\u4e9b\u8fc7\u65f6\u7684\u77e5\u8bc6\uff0c\u6240\u4ee5\u5982\u679c\u6709\u6700\u65b0\u7684\u60c5\u51b5\uff0c\u8bf7\u5728\u8bc4\u8bba\u4e2d\u6307\u51fa\u3002<\/p>\n<h3>3.2.1 \u5361\u6851\u5fb7\u62c9<\/h3>\n<hr \/>\n<p>\u3010\u4f18\u52bf\u3011<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306b\u512a\u308c\u308b\u3002\u7dda\u5f62\u30b9\u30b1\u30fc\u30eb\u30a2\u30a6\u30c8\u53ef\u80fd\u3068\u3082\u8a55\u3055\u308c\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u65ad\u304c\u3042\u3063\u3066\u3082\u4f55\u3089\u304b\u306e\u5f62\u3067\u52d5\u304d\u7d9a\u3051\u308b\u3001\u9ad8\u3044\u53ef\u7528\u6027\u3092\u6301\u3064\u3002<\/ul>\n<p>\u3010\u7f3a\u70b9\u3011<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6301\u305f\u306a\u3044\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u6574\u5408\u6027\u306fEventual Consistency\u3068\u8a00\u308f\u308c\u308b\u3082\u306e\u3067\u3001\u307b\u307c\u4f55\u3082\u4fdd\u8a3c\u304c\u3067\u304d\u306a\u3044\u306b\u7b49\u3057\u3044\u3002<\/ul>\n<hr \/>\n<p>Cassandra\u4ee5\u591a\u4e3b\u7ed3\u6784\u5b9e\u73b0\uff0c\u5e76\u80fd\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u5904\u7406\u8bfb\u5199\u64cd\u4f5c\u3002\u901a\u8fc7\u6dfb\u52a0\u8282\u70b9\u53ef\u4ee5\u7ebf\u6027\u63d0\u5347\u6027\u80fd\uff0c\u5e76\u5177\u5907\u826f\u597d\u7684\u53ef\u4f38\u7f29\u6027\u3002<br \/>\n\u7136\u800c\uff0c\u5176\u4e00\u81f4\u6027\u4fdd\u8bc1\u76f8\u5bf9\u8f83\u5f31\uff0c\u4e0d\u652f\u6301\u4e8b\u52a1\u5904\u7406\uff0c\u56e0\u6b64\u53ef\u80fd\u4f1a\u51fa\u73b0\u65e0\u6cd5\u8bfb\u53d6\u6700\u65b0\u5199\u5165\u6570\u636e\u7684\u60c5\u51b5\u3002\u4f7f\u7528\u57fa\u4e8eQuoram\u7684\u8bfb\u53d6\u53ef\u4ee5\u63d0\u9ad8\u4e00\u81f4\u6027\uff0c\u4f46\u8fd9\u4f1a\u727a\u7272\u5ef6\u8fdf\u3002<\/p>\n<p>\u6570\u636e\u4f1a\u4f7f\u7528\u4e00\u79cd\u88ab\u79f0\u4e3a\u4e00\u81f4\u6027\u54c8\u5e0c\uff08Consistent Hashing\uff09\u7684\u65b9\u6cd5\u5728\u96c6\u7fa4\u5185\u8fdb\u884c\u5206\u6563\uff0c\u540c\u65f6\u8fd8\u4f1a\u521b\u5efa\u591a\u4e2a\u526f\u672c\u3002<\/p>\n<p>\u603b\u7ed3Cassandra\u7684\u7279\u70b9\uff0c\u53ef\u4ee5\u8bf4\u5b83\u7b26\u5408\u6240\u8c13\u7684CAP\u5b9a\u7406\uff0c\u5373\u4ee5\u59a5\u534fC\u4e3a\u76ee\u6807\u6784\u5efa\u7684AP\u7cfb\u7edf\u3002<\/p>\n<h2>3.3 NewSQL\u7684\u5b9a\u4f4d<\/h2>\n<p>\u56de\u987e\u5230\u76ee\u524d\u4e3a\u6b62\u7684\u8ba8\u8bba\uff0c\u53ef\u4ee5\u603b\u7ed3\u5982\u4e0b\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e2\u30ce\u30ea\u30b9\u306aRDBMS\u306fAC \u3001\u9650\u5b9a\u3055\u308c\u305f\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306e\u7bc4\u56f2\u5185\u3067\u53ef\u7528\u6027\u3068\u59a5\u5f53\u306a\u6574\u5408\u6027\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">NoSQL(Cassandra)\u306fAP \u3001\u6574\u5408\u6027\u3092\u59a5\u5354\u3057\u3001\u53ef\u7528\u6027\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u65ad\u8010\u6027\u3092\u9ad8\u3081\u3066\u3044\u308b\u3002<\/ul>\n<p>\u7136\u800c\uff0c\u6211\u4eec\u8981\u8ba8\u8bba\u7684\u662fA\uff08\u53ef\u7528\u6027\uff09\u7684\u542b\u4e49\u3002\u6b63\u5982\u6d89\u53ca\u7cfb\u7edf\u7684\u5de5\u7a0b\u5e08\u6240\u77e5\u9053\u7684\u90a3\u6837\uff0c\u65e0\u8bba\u6211\u4eec\u591a\u4e48\u6ce8\u610f\uff0c\u53ef\u7528\u6027\u90fd\u65e0\u6cd5\u5b8c\u5168\u4fdd\u8bc1\u3002<\/p>\n<p>\u5373\u4f7f\u5728\u4e91\u76db\u884c\u7684\u65f6\u4ee3\uff0c\u5373\u4f7f\u5efa\u7acb\u4e86Multi-AZ\u3001Multi-Region\u3001\u751a\u81f3Multi-Cloud\u7684\u67b6\u6784\uff0c\u4e5f\u65e0\u6cd5\u907f\u514d\u4e0d\u53ef\u907f\u7684\u6545\u969c\uff08\u5373\u53ef\u7528\u6027\u4e0b\u964d\uff09\u7684\u53d1\u751f\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5728NewSQL\u4e2d\uff0c\u4eba\u4eec\u91c7\u53d6\u4e86\u4e00\u79cd\u5728\u53ef\u7528\u6027\u4e0b\u59a5\u534f\u800c\u4e0d\u8ffd\u6c42\u5b8c\u7f8e\u7684\u6001\u5ea6\uff0c\u8ffd\u6c42\u4e00\u81f4\u6027\uff08Consistency\uff09\u548c\u5206\u533a\u5bb9\u9519\u6027\uff08Partition-tolerance\uff09\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u53ef\u4ee5\u8bf4&#8221; NewSQL\u662f\u4e00\u4e2a\u65e2\u5177\u5907\u4e00\u81f4\u6027\uff08CP\uff09\uff0c\u53c8\u5177\u5907\u6298\u4e2d\u53ef\u7528\u6027\uff08A\uff09&#8221;\u7684\u8bbe\u8ba1\u76ee\u6807\u3002<\/p>\n<h3>3.3.1 NewSQL\u7acb\u8db3\u4e8e\u5de8\u4eba\u7684\u80a9\u8180\u4e0a<\/h3>\n<p>\u5728NewSQL\u4e2d\uff0c\u9664\u4e86\u5177\u6709\u4f20\u7edf\u7684\u5355\u4f53\u5f0f\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08RDBMS\uff09\u548cNoSQL\u7684\u7279\u70b9\u5916\uff0c\u8fd8\u5229\u7528\u4e86\u65b0\u7684\u6280\u672f\u6765\u652f\u6301\u5f3a\u4e00\u81f4\u6027\u548c\u4e8b\u52a1\u3002<\/p>\n<hr \/>\n<p>\u3010\u4f18\u70b9\u3011<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u7528\u610f: \u30e2\u30ce\u30ea\u30b9\u306aRDBMS\u3068\u540c\u69d8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">P\u3067\u554f\u984c\u304c\u767a\u751f\u3057\u3066\u3082\u6574\u5408\u6027\u3092\u7dad\u6301: \u3053\u308c\u306f\u4eca\u307e\u3067\u306b\u306a\u3044\u7279\u5fb4\u3067\u3001Paxos\/Raft\u3067\u5b9f\u73fe<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5206\u96e2\u30ec\u30d9\u30eb\u3067\u3044\u3048\u3070Serializable\u3092\u30b5\u30dd\u30fc\u30c8: \u30e2\u30ce\u30ea\u30b9\u306aRDBMS\u3092\u5f37\u5316<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u30c7\u30fc\u30bf\u3092\u5206\u6563\u914d\u7f6e: Sharding\u3084NoSQL\u3068\u540c\u3058\u8003\u3048\u65b9<\/ul>\n<hr \/>\n<p>\u4e3a\u4e86\u8fdb\u4e00\u6b65\u63d0\u9ad8\u53ef\u7528\u6027\uff0c\u6211\u4eec\u91c7\u53d6\u4e86\u5206\u7247\u6570\u636e\u7684\u526f\u672c\uff0c\u4ee5\u53ca\u7c7b\u4f3c\u4e8e\u591a\u4e3b\u6216Cassandra\u63cf\u8ff0\u4e2d\u6240\u89c1\u7684\u914d\u7f6e\uff0c\u4ee5\u6d88\u9664\u6545\u969c\u8f6c\u79fb\u7684\u5f71\u54cd\u3002<\/p>\n<p>\u5f53A\u8fbe\u6210\u59a5\u534f\u65f6\uff0c\u610f\u5473\u7740\u5f53\u8d85\u8fc7\u4e00\u534a\u4ee5\u4e0a\u7684\u8282\u70b9\u5b95\u673a\u65f6\uff0c\u66f4\u65b0\u5c06\u505c\u6b62\uff08\u4f46Read\u64cd\u4f5c\u53ef\u80fd\u4ecd\u53ef\u7ee7\u7eed\uff09\u3002\u5c3d\u7ba1\u8fd9\u79cd\u60c5\u51b5\u5f88\u5c11\u53d1\u751f\uff0c\u6bd4\u5982\u6570\u636e\u4e2d\u5fc3\u6545\u969c\u6216\u6574\u4e2a\u533a\u57df\u53d1\u751f\u6545\u969c\uff0c\u4f46\u5e76\u975e\u5b8c\u5168\u6ca1\u6709\u51fa\u73b0\u7684\u53ef\u80fd\u3002<\/p>\n<h3>3.3.2 NewSQL\u662f\u5426\u662f\u591a\u4e3b\u6a21\u5f0f\uff1f<\/h3>\n<p>\u5c3d\u7ba1\u6211\u4eec\u5df2\u7ecf\u63d0\u5230NewSQL\u662f\u591a\u4e3b\u8282\u70b9\u7684\uff0c\u4f46\u6211\u4eec\u5e0c\u671b\u5bf9\u8fd9\u4e00\u70b9\u8fdb\u884c\u66f4\u6df1\u5165\u7684\u601d\u8003\u3002<\/p>\n<p>\u4ee5\u4e0a\u56fe\u8868\u6240\u793a\u7684\u662fYugaByteDB\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7247\uff0c\u5c06\u6bcf\u4e2a\u5206\u7247\u7684\u526f\u672c\u590d\u5236\u5230\u4e0d\u540c\u7684\u8282\u70b9\u4e0a\u7684\u914d\u7f6e\u3002(\u6709\u5173\u5206\u7247\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u540e\u7eed\u76844.2\u90e8\u5206)<\/p>\n<hr \/>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d905b913a08637a6dbb46\/174-0.png\" alt=\"image.png\" \/><\/div>\n<hr \/>\n<p>\u5c3d\u7ba1\u8be6\u7ec6\u5185\u5bb9\u5c06\u5728\u53e6\u4e00\u7bc7\u7a3f\u4ef6\u4e2d\u89e3\u91ca\uff0c\u4f46\u57fa\u672c\u4e0a\u4f7f\u7528Raft\u7684NewSQL\u4e2d\uff0c\u53ea\u6709Raft Group\u5185\u7684Leader\uff08\u5728\u56fe\u4e2d\u88ab\u6807\u4e3atablet1\u5e76\u5217\u7684\u526f\u672c\u4e0eRaft Group\u540c\u4e49\uff09\u80fd\u591f\u5904\u7406\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u4ece\u5355\u4e2aRaft Group\u7684\u89d2\u5ea6\u6765\u770b\uff0cNewSQL\u4e0d\u80fd\u88ab\u79f0\u4e3a\u591a\u4e3b\u7b56\u7565\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5728NewSQL\u4e2d\uff0c\u7531\u4e8eShard=Raft Group\u7684\u8bbe\u5b9a\uff0c\u5b58\u5728\u7740\u591a\u4e2a\u88ab\u5206\u5272\u4e3a\u56fa\u5b9a\u5927\u5c0f\u7684Raft Group\uff0c\u5e76\u4e14\u8fd9\u4e9bRaft Group\u7684Leader\u5206\u6563\u5728\u5404\u4e2a\u8282\u70b9\u4e0a\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u4ece\u591aRaft Group\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5b83\u662f\u591a\u4e3b\u6a21\u5f0f\u7684\u3002<\/p>\n<p>\u5728\u7406\u89e3NewSQL\u7684\u8fc7\u7a0b\u4e2d\uff0c\u8fd9\u4e2aRaft 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