{"id":20192,"date":"2021-12-11T11:36:11","date_gmt":"2021-12-11T03:36:11","guid":{"rendered":"https:\/\/aqzt.com\/20192.html"},"modified":"2021-12-11T11:36:11","modified_gmt":"2021-12-11T03:36:11","slug":"%e5%8d%95%e8%a1%a860%e4%ba%bf%e8%ae%b0%e5%bd%95%e7%ad%89%e5%a4%a7%e6%95%b0%e6%8d%ae%e5%9c%ba%e6%99%af%e7%9a%84mysql%e4%bc%98%e5%8c%96%e5%92%8c%e8%bf%90%e7%bb%b4%e4%b9%8b%e9%81%93%e9%ab%98%e5%8f%af","status":"publish","type":"post","link":"https:\/\/aqzt.com\/20192.html","title":{"rendered":"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053|\u9ad8\u53ef\u7528\u67b6\u6784"},"content":{"rendered":"<p>\u5f53\u7136MySQL\u4e5f\u8ba4\u8bc6\u52305.6\u8fd9\u79cd\u5e76\u884c\u7684\u74f6\u9888\u6240\u5728\uff0c\u6240\u4ee5\u57285.7\u5f15\u5165\u4e86\u53e6\u5916\u4e00\u79cd\u5e76\u884c\u590d\u5236\u65b9\u5f0f\uff0c\u57fa\u4e8elogical timestamp\u7684\u5e76\u884c\u590d\u5236\uff0c\u5e76\u884c\u590d\u5236\u4e0d\u518d\u53d7\u9650\u4e8e\u5e93\u7684\u4e2a\u6570\uff0c\u6548\u7387\u4f1a\u5927\u5927\u63d0\u5347\u3002<\/p>\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003524-54.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p>\u4e0a\u56fe\u662f5.7\u7684logical timestamp\u7684\u590d\u5236\u539f\u7406\u56fe<\/p>\n<p>\u521a\u624d\u6211\u4e5f\u63d0\u5230MySQL\u539f\u6765\u53ea\u652f\u6301\u5f02\u6b65\u590d\u5236\uff0c\u8fd9\u79cd\u6570\u636e\u5b89\u5168\u6027\u662f\u975e\u5e38\u5dee\u7684\uff0c\u6240\u4ee5\u540e\u6765\u5f15\u5165\u4e86\u534a\u540c\u6b65\u590d\u5236\uff0c\u4ece5.5\u5f00\u59cb\u652f\u6301\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003525-33.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p>\u4e0a\u56fe\u662f\u539f\u751f\u5f02\u6b65\u590d\u5236\u548c\u534a\u540c\u6b65\u590d\u5236\u7684\u533a\u522b\u3002\u53ef\u4ee5\u770b\u5230\u534a\u540c\u6b65\u901a\u8fc7\u4ece\u5e93\u8fd4\u56deACK\u8fd9\u79cd\u65b9\u5f0f\u786e\u8ba4\u4ece\u5e93\u6536\u5230\u6570\u636e\uff0c\u6570\u636e\u5b89\u5168\u6027\u5927\u5927\u63d0\u9ad8\u3002<\/p>\n<p>\u57285.7\u4e4b\u540e\uff0c\u534a\u540c\u6b65\u4e5f\u53ef\u4ee5\u914d\u7f6e\u4f60\u6307\u5b9a\u591a\u4e2a\u4ece\u5e93\u53c2\u4e0e\u534a\u540c\u6b65\u590d\u5236\uff0c\u4e4b\u524d\u7248\u672c\u90fd\u662f\u9ed8\u8ba4\u4e00\u4e2a\u4ece\u5e93\u3002<\/p>\n<p>\u5bf9\u4e8e\u534a\u540c\u6b65\u590d\u5236\u6548\u7387\u95ee\u9898\u6709\u4e00\u4e2a\u5c0f\u7684\u4f18\u5316\uff0c\u5c31\u662f\u4f7f\u75285.6+\u7684mysqlbinlog\u4ee5daemon\u65b9\u5f0f\u4f5c\u4e3a\u4ece\u5e93\uff0c\u540c\u6b65\u6548\u7387\u4f1a\u597d\u5f88\u591a\u3002<\/p>\n<p>\u5173\u4e8e\u66f4\u5b89\u5168\u7684\u590d\u5236\uff0cMySQL 5.7\u4e5f\u662f\u6709\u65b9\u6848\u7684\uff0c\u65b9\u6848\u540d\u53ebGroup replication \u5b98\u65b9\u591a\u4e3b\u65b9\u6848\uff0c\u57fa\u4e8eCorosync\u5b9e\u73b0\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003527-95.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<h3>\u4e3b\u4ece\u5ef6\u65f6\u95ee\u9898<\/h3>\n<p><strong>\u539f\u56e0<\/strong>\uff1a\u4e00\u822c\u90fd\u4f1a\u505a\u8bfb\u5199\u5206\u79bb\uff0c\u5176\u5b9e\u4ece\u5e93\u538b\u529b\u53cd\u800c\u6bd4\u4e3b\u5e93\u5927\uff0f\u4ece\u5e93\u8bfb\u5199\u538b\u529b\u5927\u975e\u5e38\u5bb9\u6613\u5bfc\u81f4\u5ef6\u65f6\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><br \/>\n\u9996\u5148\u5b9a\u4f4d\u5ef6\u65f6\u74f6\u9888 \u5982\u679c\u662fIO\u538b\u529b\uff0c\u53ef\u4ee5\u901a\u8fc7\u5347\u7ea7\u786c\u4ef6\u89e3\u51b3\uff0c\u6bd4\u5982\u66ff\u6362SSD\u7b49 \u5982\u679cIO\u548cCPU\u90fd\u4e0d\u662f\u74f6\u9888\uff0c\u975e\u5e38\u6709\u53ef\u80fd\u662fSQL\u5355\u7ebf\u7a0b\u95ee\u9898\uff0c\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u8003\u8651\u521a\u624d\u63d0\u5230\u7684\u5e76\u884c\u590d\u5236\u65b9\u6848 \u5982\u679c\u8fd8\u6709\u95ee\u9898\uff0c\u53ef\u4ee5\u8003\u8651sharding\u62c6\u5206\u65b9\u6848<\/p>\n<p>\u63d0\u5230\u5ef6\u65f6\u4e0d\u5f97\u4e0d\u63d0\u5230\u5f88\u5751\u4eba\u7684Seconds behind master\uff0c\u4f7f\u7528\u8fc7MySQL\u7684\u5e94\u8be5\u5f88\u719f\u6089\u3002<\/p>\n<p>\u8fd9\u4e2a\u503c\u7684\u6e90\u7801\u91cc\u7b97\u6cd5<\/p>\n<p>long time_diff= ((long)(time(0) \u2013 mi-&gt;rli.last_master_timestamp) \u2013 mi-&gt;clock_diff_with_master);<\/p>\n<p>Secondsbehindmaster\u6765\u5224\u65ad\u5ef6\u65f6\u4e0d\u53ef\u9760\uff0c\u5728\u7f51\u7edc\u6296\u52a8\u6216\u8005\u4e00\u4e9b\u7279\u6b8a\u53c2\u6570\u914d\u7f6e\u60c5\u51b5\u4e0b\uff0c\u4f1a\u9020\u6210\u8fd9\u4e2a\u503c\u662f0\u4f46\u5176\u5b9e\u5ef6\u65f6\u5f88\u5927\u4e86\u3002\u901a\u8fc7heartbeat\u8868\u63d2\u5165\u65f6\u95f4\u6233\u8fd9\u79cd\u673a\u5236\u5224\u65ad\u5ef6\u65f6\u662f\u66f4\u9760\u8c31\u7684<\/p>\n<p>\u590d\u5236\u6ce8\u610f\u70b9\uff1a<br \/>\nBinlog\u683c\u5f0f\uff0c\u5efa\u8bae\u90fd\u91c7\u7528row\u683c\u5f0f\uff0c\u6570\u636e\u4e00\u81f4\u6027\u66f4\u597d Replication filter\u5e94\u7528<\/p>\n<p><strong>\u4e3b\u4ece\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\uff1a<\/strong><\/p>\n<p>row\u683c\u5f0f\u4e0b\u7684\u6570\u636e\u6062\u590d\u95ee\u9898<\/p>\n<h3>InnoDB\u4f18\u5316<\/h3>\n<p>\u6210\u719f\u5f00\u6e90\u4e8b\u52a1\u5b58\u50a8\u5f15\u64ce\uff0c\u652f\u6301ACID\uff0c\u652f\u6301\u4e8b\u52a1\u56db\u4e2a\u9694\u79bb\u7ea7\u522b\uff0c\u66f4\u597d\u7684\u6570\u636e\u5b89\u5168\u6027\uff0c\u9ad8\u6027\u80fd\u9ad8\u5e76\u53d1\uff0cMVCC\uff0c\u7ec6\u7c92\u5ea6\u9501\uff0c\u652f\u6301O_DIRECT\u3002<\/p>\n<p>\u4e3b\u8981\u4f18\u5316\u53c2\u6570\uff1a<br \/>\ninnodbfileper_table =1 innodbbufferpool_size\uff0c\u6839\u636e\u6570\u636e\u91cf\u548c\u5185\u5b58\u5408\u7406\u8bbe\u7f6e innodbflushlog_attrxcommit= 0 1 2 innodblogfile_size\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u5927\u4e00\u4e9b innodbpagesize Innodbflushmethod = o_direct innodbundodirectory \u653e\u5230\u9ad8\u901f\u8bbe\u5907(5.6\uff0b) innodbbufferpool_dump atshutdown \uff0cbufferpool dump (5.6+)<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003527-48.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p>\u4e0a\u56fe\u662f5.5 4G\u7684redo log\u548c5.6 \u8bbe\u7f6e\u5927\u4e8e4G redo log\u6587\u4ef6\u6027\u80fd\u5bf9\u6bd4\uff0c\u53ef\u4ee5\u770b\u5230\u7a33\u5b9a\u6027\u66f4\u597d\u4e86\u3002innodblogfile_size\u8bbe\u7f6e\u8fd8\u662f\u5f88\u6709\u610f\u4e49\u7684\u3002<\/p>\n<p><strong>InnoDB\u6bd4\u8f83\u597d\u7684\u7279\u6027\uff1a<\/strong><br \/>\nBufferpool\u9884\u70ed\u548c\u52a8\u6001\u8c03\u6574\u5927\u5c0f\uff0c\u52a8\u6001\u8c03\u6574\u5927\u5c0f\u9700\u89815.7\u652f\u6301 Page size\u81ea\u5b9a\u4e49\u8c03\u6574\uff0c\u9002\u5e94\u76ee\u524d\u786c\u4ef6 InnoDB\u538b\u7f29\uff0c\u5927\u5927\u964d\u4f4e\u6570\u636e\u5bb9\u91cf\uff0c\u4e00\u822c\u53ef\u4ee5\u538b\u7f2950%\uff0c\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\u548cIO\uff0c\u7528CPU\u6362\u7a7a\u95f4 Transportable tablespaces\uff0c\u8fc1\u79fbibd\u6587\u4ef6\uff0c\u7528\u4e8e\u5feb\u901f\u5355\u8868\u6062\u590d Memcached API\uff0cfull text\uff0cGIS\u7b49<\/p>\n<p><strong>InnoDB\u5728SSD\u4e0a\u7684\u4f18\u5316\uff1a<\/strong><\/p>\n<p>\u57285.5\u4ee5\u4e0a\uff0c\u63d0\u9ad8innodbwriteiothreads\u548cinnodbreadiothreads innodbiocapacity\u9700\u8981\u8c03\u5927* \u65e5\u5fd7\u6587\u4ef6\u548credo\u653e\u5230\u673a\u68b0\u786c\u76d8\uff0cundo\u653e\u5230SSD\uff0c\u5efa\u8bae\u8fd9\u6837\uff0c\u4f46\u5fc5\u8981\u6027\u4e0d\u5927 atomic write,\u4e0d\u9700\u8981Double Write Buffer InnoDB\u538b\u7f29 \u5355\u673a\u591a\u5b9e\u4f8b<\/p>\n<p>\u4e5f\u8981\u641e\u6e05\u695aInnoDB\u54ea\u4e9b\u6587\u4ef6\u662f\u987a\u5e8f\u8bfb\u5199\uff0c\u54ea\u4e9b\u662f\u968f\u673a\u8bfb\u5199\u3002<\/p>\n<p><strong>\u968f\u673a\u8bfb\u5199\uff1a<\/strong><br \/>\ndatadir innodbdata file_path innodbundo directory<\/p>\n<p><strong>\u987a\u5e8f\u8bfb\u5199\uff1a<\/strong><\/p>\n<p>innodbloggrouphomedir log-bin<\/p>\n<p><strong>InnoDB VS MyISAM\uff1a<\/strong><\/p>\n<p>\u6570\u636e\u5b89\u5168\u6027\u81f3\u5173\u91cd\u8981\uff0cInnoDB\u5b8c\u80dc\uff0c\u66fe\u7ecf\u9047\u5230\u8fc7\u4e00\u6b2190G\u7684MyISAM\u8868repair\uff0c\u82b1\u4e86\u4e24\u5929\u65f6\u95f4\uff0c\u5982\u679c\u5728\u7ebf\u4e0a\u51e0\u4e4e\u4e0d\u53ef\u5fcd\u53d7 \u5e76\u53d1\u5ea6\u9ad8 MySQL 5.5\u9ed8\u8ba4\u5f15\u64ce\u6539\u4e3aInnoDB\uff0c\u6807\u5fd7\u7740MyISAM\u65f6\u4ee3\u7684\u843d\u5e55<\/p>\n<p><strong>TokuDB\uff1a<\/strong><\/p>\n<p>\u652f\u6301\u4e8b\u52a1 ACID \u7279\u6027\uff0c\u652f\u6301\u591a\u7248\u672c\u63a7\u5236(MVCC) \u57fa\u4e8eFractal Tree Index\uff0c\u975e\u5e38\u9002\u5408\u5199\u5165\u5bc6\u96c6\u573a\u666f \u9ad8\u538b\u7f29\u6bd4\uff0c\u539f\u751f\u652f\u6301Online DDL \u4e3b\u6d41\u5206\u652f\u90fd\u652f\u6301\uff0c\u6536\u8d39\u8f6c\u5f00\u6e90 \u3002\u76ee\u524d\u53ef\u4ee5\u548cInnoDB\u5ab2\u7f8e\u7684\u5b58\u50a8\u5f15\u64ce<\/p>\n<p>\u76ee\u524d\u4e3b\u6d41\u4f7f\u7528TokuDB\u4e3b\u8981\u662f\u770b\u4e2d\u4e86\u5b83\u7684\u9ad8\u538b\u7f29\u6bd4\uff0cTokudb\u6709\u4e09\u79cd\u538b\u7f29\u65b9\u5f0f\uff1aquicklz\u3001zlib\u3001lzma\uff0c\u538b\u7f29\u6bd4\u4f9d\u6b21\u66f4\u9ad8\u3002\u73b0\u5728\u5f88\u591a\u4f7f\u7528zabbix\u7684\u540e\u7aef\u6570\u636e\u8868\u90fd\u91c7\u7528\u7684TokuDB\uff0c\u5199\u5165\u6027\u80fd\u597d\uff0c\u538b\u7f29\u6bd4\u9ad8\u3002<\/p>\n<p>\u4e0b\u56fe\u662f\u6211\u4e4b\u524d\u505a\u7684\u6d4b\u8bd5\u5bf9\u6bd4\u548cInnoDB<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003529-42.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003530-13.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p>\u4e0a\u56fe\u662fsysbench\u6d4b\u8bd5\u7684\u548cInnoDB\u6027\u80fd\u5bf9\u6bd4\u56fe\uff0c\u53ef\u4ee5\u770b\u5230TokuDB\u5728\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\u5199\u5165\u7a33\u5b9a\u6027\u662f\u975e\u5e38\u597d\u7684\u3002<\/p>\n<p><strong>tokudb\u5b58\u5728\u7684\u95ee\u9898\uff1a<\/strong><br \/>\n\u5b98\u65b9\u5206\u652f\u8fd8\u6ca1\u5f88\u597d\u7684\u652f\u6301 \u70ed\u5907\u65b9\u6848\u95ee\u9898\uff0c\u76ee\u524d\u53ea\u6709\u4f01\u4e1a\u7248\u624d\u6709 \u8fd8\u662f\u6709bug\u7684\uff0c\u7248\u672c\u66f4\u65b0\u6bd4\u8f83\u5feb\uff0c\u4e0d\u5efa\u8bae\u5728\u6838\u5fc3\u4e1a\u52a1\u4e0a\u7528<\/p>\n<p>\u6bd4\u5982\u6211\u4eec\u4e4b\u524d\u9047\u5230\u8fc7\u4e00\u4e2a\u95ee\u9898\uff1aTokuDB\u7684\u5185\u90e8\u72b6\u6001\u663e\u793a\u4e0a\u4e00\u6b21\u5b8c\u6210\u7684checkpoint\u65f6\u95f4\u662f\u201cJul 17 12:04:11 2014\u201d\uff0c\u8ddd\u79bb\u5f53\u65f6\u53d1\u73b0\u73b0\u5728\u90fd\u5feb5\u4e2a\u6708\u4e86\uff0c\u7ed3\u679c\u5806\u79ef\u4e86\u5927\u91cfredo log\u4e0d\u80fd\u5220\u9664\uff0c\u540e\u6765\u53ea\u80fd\u91cd\u542f\u5b9e\u4f8b\uff0c\u7ed3\u679c\u91cd\u542f\u8fd8\u82b1\u4e86\u4e03\u516b\u4e2a\u5c0f\u65f6\u3002<\/p>\n<h3>MySQL\u4f18\u5316\u76f8\u5173\u7684case<\/h3>\n<p>Query cache\uff0cMySQL\u5185\u7f6e\u7684\u67e5\u8be2\u52a0\u901f\u7f13\u5b58\uff0c\u7406\u5ff5\u662f\u597d\u7684,\u4f46\u8bbe\u8ba1\u4e0d\u591f\u5408\u7406\uff0c\u6709\u70b9out\u3002<\/p>\n<p>\u9501\u7684\u7c92\u5ea6\u975e\u5e38\u5927MySQL 5.6\u9ed8\u8ba4\u5df2\u7ecf\u5173\u95ed<\/p>\n<p>When the query cache helps, it can help a lot. When it hurts, it can hurt a lot.\u660e\u663e\u524d\u534a\u53e5\u5df2\u7ecf\u6ca1\u6709\u592a\u5927\u7528\u5904\uff0c\u5728\u9ad8\u5e76\u53d1\u4e0b\u975e\u5e38\u5bb9\u6613\u9047\u5230\u74f6\u9888\u3002<\/p>\n<p>\u5173\u4e8e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b \uff0cInnoDB\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\u662f\u53ef\u91cd\u590d\u8bfb\u7ea7\u522b\uff0c\u5f53\u7136InnoDB\u867d\u7136\u662f\u8bbe\u7f6e\u7684\u53ef\u91cd\u590d\u8bfb\uff0c\u4f46\u662f\u4e5f\u662f\u89e3\u51b3\u4e86\u5e7b\u8bfb\u7684\uff0c\u5efa\u8bae\u6539\u6210\u8bfb\u5df2\u63d0\u4ea4\u7ea7\u522b\uff0c\u53ef\u4ee5\u6ee1\u8db3\u5927\u591a\u6570\u573a\u666f\u9700\u6c42\uff0c\u6709\u5229\u4e8e\u66f4\u9ad8\u7684\u5e76\u53d1\uff0c\u4fee\u6539transaction-isolation\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003531-85.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003532-15.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p>\u4e0a\u56fe\u662f\u4e00\u4e2a\u6bd4\u8f83\u7ecf\u5178\u7684\u6b7b\u9501case\uff0c\u6709\u5174\u8da3\u53ef\u4ee5\u6d4b\u8bd5\u4e0b\u3002<\/p>\n<h3>\u5173\u4e8eSSD<\/h3>\n<p>\u5173\u4e8eSSD\uff0c\u8fd8\u662f\u63d0\u4e00\u4e0b\u5427\u3002\u67d0\u77e5\u540d\u5927V\u8bf4\u8fc7\u201c\u6700\u8fd110\u5e74\u5bf9\u6570\u636e\u5e93\u6027\u80fd\u5f71\u54cd\u6700\u5927\u7684\u662f\u95ea\u5b58\u201d\uff0c\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u53ef\u9760\u6027\u5df2\u7ecf\u5f97\u5230\u5927\u89c4\u6a21\u9a8c\u8bc1\uff0c\u591a\u5757SATA SSD\u505aRaid5\uff0c\u63a8\u8350\u4f7f\u7528\u3002\u91c7\u7528PCIe SSD\uff0c\u4e3b\u6d41\u4e91\u5e73\u53f0\u90fd\u63d0\u4f9bSSD\u4e91\u786c\u76d8\u652f\u6301\u3002<\/p>\n<h3>\u6700\u540e\u8bf4\u4e00\u4e0b\u5927\u5bb6\u5173\u6ce8\u7684\u5355\u886860\u4ebf\u8bb0\u5f55\u95ee\u9898\uff0c\u8868\u91cc\u6570\u636e\u4e5f\u662f\u7ebf\u4e0a\u6bd4\u8f83\u6838\u5fc3\u7684\u3002<\/h3>\n<p>\u5148\u8bf4\u4e0b\u5f53\u65f6\u60c5\u51b5\uff0c\u8868\u7ed3\u6784\u6bd4\u8f83\u7b80\u5355\uff0c\u90fd\u662fbigint\u8fd9\u79cd\u6574\u578b\uff0c\u7d22\u5f15\u6bd4\u8f83\u591a\uff0c\u5e94\u8be5\u67092-3\u4e2a\uff0c\u5355\u8868\u884c\u657060\u4ebf\uff0b\uff0c\u5355\u8868\u5bb9\u91cf1.2TB\u5de6\u53f3\uff0c\u5f53\u7136\u5185\u90e8\u80af\u5b9a\u662f\u6709\u788e\u7247\u7684\u3002<\/p>\n<p><strong>\u5f62\u6210\u539f\u56e0<\/strong>\uff1a\u5386\u53f2\u9057\u7559\u95ee\u9898\uff0c\u6309\u7167\u6211\u4eec\u524d\u9762\u8bb2\u7684\u5f00\u53d1\u89c4\u8303\uff0c\u8fd9\u4e2a\u5e94\u8be5\u65e9\u62c6\u5206\u4e86\uff0c\u5f53\u7136\u4e0d\u62c6\u6709\u51e0\u4e2a\u539f\u56e0\uff1a<\/p>\n<p>\u6027\u80fd\u672a\u9047\u5230\u74f6\u9888 \uff0c\u4e3b\u8981\u539f\u56e0<\/p>\n<p>DBA\u6bd4\u8f83\u201c\u61d2\u201c<\/p>\n<p>\u60f3\u770b\u770bInnoDB\u7684\u6781\u9650\uff0c\u6311\u6218\u4e00\u4e0b\u3002\u4e0d\u8fc7\u98ce\u9669\u4e5f\u662f\u5f88\u5927\u7684\uff0c\u60f3\u60f3\u5982\u679c\u5728\u4e00\u4e2a1.2TB\u8868\u4e0a\u52a0\u4e2a\u5b57\u6bb5\u52a0\u4e2a\u7d22\u5f15\uff0c\u90a3\u611f\u89c9\u7edd\u5bf9\u9178\u723d\u3002\u8fd8\u6709\u5c31\u662f\u5355\u8868\u6062\u590d\u7684\u95ee\u9898\uff0c\u6062\u590d\u65f6\u95f4\u4e0d\u53ef\u63a7\u3002<\/p>\n<p>\u6211\u4eec\u540e\u7eed\u505a\u7684\u4f18\u5316 \uff0c\u91c7\u7528\u4e86\u521a\u624d\u63d0\u5230\u7684TokuDB\uff0c\u5355\u8868\u5bb9\u91cf\u5728InnoDB\u4e0b1TB+\uff0c\u4f7f\u7528Tokudb\u7684lzma\u538b\u7f29\u523080GB\uff0c\u538b\u7f29\u6548\u679c\u975e\u5e38\u597d\u3002\u8fd9\u6837\u4e5f\u89e3\u51b3\u4e86\u5355\u8868\u8fc7\u5927\u6062\u590d\u65f6\u95f4\u95ee\u9898\uff0c\u4e5f\u652f\u6301online DDL\uff0c\u57fa\u672c\u8fbe\u5230\u6211\u4eec\u9884\u671f\u3002<\/p>\n<p>\u4eca\u5929\u8bb2\u7684\u4e3b\u8981\u9488\u5bf9MySQL\u672c\u8eab\u4f18\u5316\u548c\u89c4\u8303\u6027\u8d28\u7684\u4e1c\u897f\uff0c\u8fd8\u6709\u4e00\u4e9b\u6bd4\u8f83\u597d\u7684\u8fd0\u7ef4\u7ecf\u9a8c\uff0c\u5e0c\u671b\u5927\u5bb6\u80fd\u6709\u6240\u6536\u83b7\u3002\u4eca\u5929\u8fd9\u4e9b\u5185\u5bb9\u662f\u4e3a\u540e\u7eed\u6570\u636e\u5e93\u505a\u5e73\u53f0\u5316\u7684\u57fa\u7840\u3002\u6211\u4eca\u5929\u5206\u4eab\u5c31\u5230\u8fd9\u91cc\uff0c\u8c22\u8c22\u5927\u5bb6\u3002<\/p>\n<h3>QA<\/h3>\n<hr \/>\n<p>**Q1\uff1ause schema;select * from table; \u548cselect * from schema.table;\u4e24\u79cd\u5199\u6cd5\u6709\u4ec0\u4e48\u4e0d\u4e00\u6837\u5417\uff1f\u4f1a\u5bf9\u4e3b\u4ece\u540c\u6b65\u6709\u5f71\u54cd\u5417\uff1f**\u5bf9\u4e8e\u4e3b\u4ece\u590d\u5236\u6765\u8bf4\u6267\u884c\u6548\u7387\u4e0a\u5dee\u522b\u4e0d\u5927\uff0c\u4e0d\u8fc7\u5728\u4f7f\u7528replication filter\u65f6\u5019\u8fd9\u79cd\u60c5\u51b5\u9700\u8981\u5c0f\u5fc3\uff0c\u5e94\u8be5\u8981\u4f7f\u7528ReplicateWildIgnoreTable\u8fd9\u79cd\u53c2\u6570\uff0c\u5982\u679c\u4e0d\u4f7f\u7528\u5e26wildignore\uff0c\u7b2c\u4e00\u79cd\u65b9\u5f0f\u4f1a\u6709\u95ee\u9898\uff0c\u8fc7\u6ee4\u4e0d\u8d77\u4f5c\u7528\u3002<\/p>\n<p><strong>Q2\uff1a\u5bf9\u4e8e\u7528\u4e8eMySQL\u7684ssd\uff0c\u6d4b\u8bd5\u65b9\u5f0f\u548cssd\u7684\u53c2\u6570\u914d\u7f6e\u65b9\u9762\uff0c\u6709\u6ca1\u6709\u597d\u7684\u5efa\u8bae\uff1f\u4e3b\u8981\u9488\u5bf9ssd\u7684\u914d\u7f6e\u54c8<\/strong><\/p>\n<p>\u5173\u4e8eSATA SSD\u914d\u7f6e\u53c2\u6570\uff0c\u5efa\u8bae\u4f7f\u7528Raid5\uff0c\u60f3\u66f4\u4fdd\u9669\u4f7f\u7528Raid50\uff0c\u66f4\u571f\u8c6a\u4f7f\u7528Raid 10<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220211003533-78.jpg\" alt=\"\u5355\u886860\u4ebf\u8bb0\u5f55\u7b49\u5927\u6570\u636e\u573a\u666f\u7684MySQL\u4f18\u5316\u548c\u8fd0\u7ef4\u4e4b\u9053\" \/><\/p>\n<p>\u4e0a\u56fe\u662f\u4e3b\u8981\u7684\u53c2\u6570\u4f18\u5316\uff0c\u6027\u80fd\u63d0\u5347\u6700\u5927\u7684\u662f\u7b2c\u4e00\u4e2a\u4fee\u6539\u8c03\u5ea6\u7b97\u6cd5\u7684<\/p>\n<p><strong>Q3\uff1a\u6570\u636e\u5e93\u89c4\u8303\u5df2\u5236\u5b9a\u597d\uff0c\u5982\u4f55\u4fdd\u8bc1\u5f00\u53d1\u4eba\u5458\u5fc5\u987b\u6309\u7167\u89c4\u8303\u6765\u5f00\u53d1\uff1f<\/strong><\/p>\n<p>\u5173\u4e8e\u6570\u636e\u5e93\u89c4\u8303\u5b9e\u65bd\u95ee\u9898\uff0c\u4e5f\u662f\u6709\u4e24\u4e2a\u65b9\u9762\u5427\uff0c\u7b2c\u4e00\u3001\u5b9a\u671f\u7ed9\u5f00\u53d1\u57f9\u8bad\u5f00\u53d1\u89c4\u8303\uff0c\u8ba9\u5f00\u53d1\u80fd\u66f4\u4e86\u89e3\u3002\u7b2c\u4e8c\u3001\u8fd8\u662f\u5728\u6d41\u7a0b\u4e0a\u89c4\u8303\uff0c\u6bd4\u5982\u628a\u6211\u4eec\u65e5\u5e38\u901a\u7528\u7684\u5efa\u8868\u548c\u5b57\u6bb5\u7b56\u7565\u56fa\u5316\u5230\u7a0b\u5e8f\uff0c\u505a\u6210\u81ea\u52a8\u5316\u5ba1\u6838\u7cfb\u7edf\u3002\u8fd9\u4e24\u65b9\u9762\u7ed3\u5408 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proxy\u505a\u8bfb\u8d1f\u8f7d\uff0c\u4f46\u662f\u5c11\u91cf\u6570\u636e\u538b\u529b\u4e0b\u5e76\u6ca1\u6709\u8d1f\u8f7d\uff0c\u8bf7\u95ee\u6709\u8fd9\u56de\u4e8b\u5417\uff1f<\/strong><\/p>\n<p>\u5c11\u91cf\u6570\u636e\u538b\u529b\u4e0b\uff0c\u5e76\u6ca1\u6709\u8d1f\u8f7d \uff0c\u8fd9\u4e2a\u6ca1\u6d4b\u8bd5\u8fc7\uff0c\u4e0d\u597d\u8bc4\u4ef7<\/p>\n<p><strong>Q11\uff1a\u5bf9\u4e8ebinlog\u683c\u5f0f\uff0c\u4e3a\u4ec0\u4e48\u53ea\u63a8\u8350row\uff0c\u800c\u4e0d\u7528\u7f51\u4e0a\u5927\u90e8\u5206\u6587\u7ae0\u63a8\u8350\u7684Mix \uff1f<\/strong><\/p>\n<p>\u8fd9\u4e2a\u4e3b\u8981\u662f\u8003\u8651\u6570\u636e\u590d\u5236\u7684\u53ef\u9760\u6027\uff0crow\u66f4\u597d\u3002mixed\u542b\u4e49\u662f\u6307\u5982\u679c\u6709\u4e00\u4e9b\u5bb9\u6613\u5bfc\u81f4\u4e3b\u4ece\u4e0d\u4e00\u81f4\u7684SQL 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