{"id":1797,"date":"2019-12-12T13:53:40","date_gmt":"2019-12-12T05:53:40","guid":{"rendered":"https:\/\/www.xiaobo.li\/?p=1797"},"modified":"2019-12-12T13:53:40","modified_gmt":"2019-12-12T05:53:40","slug":"innodb_flush_log_at_trx_commit%e5%92%8csync_binlog%e5%8f%82%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/1797","title":{"rendered":"innodb_flush_log_at_trx_commit\u548csync_binlog\u53c2\u6570"},"content":{"rendered":"<div id=\"content_views\" class=\"htmledit_views\">\n<p>innodb_flush_log_at_trx_commit\u548csync_binlog\u662fMySQL innodb\u5f15\u64ce\u7684\u4e24\u4e2a\u91cd\u8981\u7684\u53c2\u6570\uff0c\u5176\u4e2dinnodb_flush_log_at_trx_commit\u662f\u5c06\u4e8b\u52a1\u65e5\u5fd7\u4eceinnodb log buffer\u5199\u5165\u5230redo log\u4e2d\uff0csync_binlog\u662f\u5c06\u4e8c\u8fdb\u5236\u65e5\u5fd7\u6587\u4ef6\u5237\u65b0\u5230\u78c1\u76d8\u4e0a\u3002<\/p>\n<p>innodb\u4e8b\u52a1\u65e5\u5fd7redo,binlog\u903b\u8f91\u8fc7\u7a0b\u5982\u4e0b:<br \/>\n1.\u4e8b\u52a1\u5199\u5165redo log buffer\u4e2d\uff1b<br \/>\n2.\u5c06log buffer\u5237\u65b0\u5230redo log\u4e2d\uff0c\u4e0d\u8fc7\u4f1a\u5148\u5199\u4e00\u4e2aTX PREPARE\u6807\u8bb0\uff1b<br \/>\n3.\u5199binlog<br \/>\n4.\u5728redo log\u4e2d\u5199\u5165TX COMMIT\u6807\u8bb0\uff1b<br \/>\n5.\u5c06\u5199binlog\u6210\u529f\u7684\u6807\u8bb0\u5199\u5165redo log\u3002<\/p>\n<p>\u53c2\u6570\u89e3\u6790\u5982\u4e0b\uff1a<br \/>\ninnodb_flush_log_at_trx_commit = N\uff1a<\/p>\n<p>N=0 \u00a0\u00a0\u00a0\u6bcf\u9694\u4e00\u79d2\uff0c\u628a\u4e8b\u52a1\u65e5\u5fd7\u7f13\u5b58\u533a\u7684\u6570\u636e\u5199\u5230\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u4ee5\u53ca\u628a\u65e5\u5fd7\u6587\u4ef6\u7684\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u4e0a\uff1b<br \/>\nlog buffer \u4f1a \u6bcf\u79d2\u5199\u5165\u5230\u65e5\u5fd7\u6587\u4ef6\u5e76\u5237\u5199\uff08flush\uff09\u5230\u78c1\u76d8\u3002\u4f46\u6bcf\u6b21\u4e8b\u52a1\u63d0\u4ea4\u4e0d\u4f1a\u6709\u4efb\u4f55\u5f71\u54cd\uff0c\u4e5f\u5c31\u662f log buffer \u7684\u5237\u5199\u64cd\u4f5c\u548c\u4e8b\u52a1\u63d0\u4ea4\u64cd\u4f5c\u6ca1\u6709\u5173\u7cfb\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cMySQL\u6027\u80fd\u6700\u597d\uff0c\u4f46\u5982\u679c mysqld \u8fdb\u7a0b\u5d29\u6e83\uff0c\u901a\u5e38\u4f1a\u5bfc\u81f4\u6700\u540e 1s \u7684\u65e5\u5fd7\u4e22\u5931\u3002<\/p>\n<p>N=1 \u00a0\u00a0\u00a0\u6bcf\u4e2a\u4e8b\u52a1\u63d0\u4ea4\u65f6\u5019\uff0c\u628a\u4e8b\u52a1\u65e5\u5fd7\u4ece\u7f13\u5b58\u533a\u5199\u5230\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u5e76\u4e14\u5237\u65b0\u65e5\u5fd7\u6587\u4ef6\u7684\u6570\u636e\u5230\u78c1\u76d8\u4e0a\uff1b<br \/>\n\u5f53\u53d6\u503c\u4e3a 1 \u65f6\uff0c\u6bcf\u6b21\u4e8b\u52a1\u63d0\u4ea4\u65f6\uff0clog buffer \u4f1a\u88ab\u5199\u5165\u5230\u65e5\u5fd7\u6587\u4ef6\u5e76\u5237\u5199\u5230\u78c1\u76d8\u3002\u8fd9\u4e5f\u662f\u9ed8\u8ba4\u503c\u3002\u8fd9\u662f\u6700\u5b89\u5168\u7684\u914d\u7f6e\uff0c\u4f46\u7531\u4e8e\u6bcf\u6b21\u4e8b\u52a1\u90fd\u9700\u8981\u8fdb\u884c\u78c1\u76d8I\/O\uff0c\u6240\u4ee5\u4e5f\u6700\u6162\u3002<\/p>\n<p>N=2 \u00a0\u00a0\u00a0\u6bcf\u4e8b\u52a1\u63d0\u4ea4\u7684\u65f6\u5019\uff0c\u628a\u4e8b\u52a1\u65e5\u5fd7\u6570\u636e\u4ece\u7f13\u5b58\u533a\u5199\u5230\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff1b\u6bcf\u9694\u4e00\u79d2\uff0c\u5237\u65b0\u4e00\u6b21\u65e5\u5fd7\u6587\u4ef6\uff0c\u4f46\u4e0d\u4e00\u5b9a\u5237\u65b0\u5230\u78c1\u76d8\u4e0a\uff0c\u800c\u662f\u53d6\u51b3\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u8c03\u5ea6\uff1b<br \/>\n\u5f53\u53d6\u503c\u4e3a 2 \u65f6\uff0c\u6bcf\u6b21\u4e8b\u52a1\u63d0\u4ea4\u4f1a\u5199\u5165\u65e5\u5fd7\u6587\u4ef6\uff0c\u4f46\u5e76\u4e0d\u4f1a\u7acb\u5373\u5237\u5199\u5230\u78c1\u76d8\uff0c\u65e5\u5fd7\u6587\u4ef6\u4f1a\u6bcf\u79d2\u5237\u5199\u4e00\u6b21\u5230\u78c1\u76d8\u3002\u8fd9\u65f6\u5982\u679c mysqld \u8fdb\u7a0b\u5d29\u6e83\uff0c\u7531\u4e8e\u65e5\u5fd7\u5df2\u7ecf\u5199\u5165\u5230\u7cfb\u7edf\u7f13\u5b58\uff0c\u6240\u4ee5\u5e76\u4e0d\u4f1a\u4e22\u5931\u6570\u636e\uff1b\u5728\u64cd\u4f5c\u7cfb\u7edf\u5d29\u6e83\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u5e38\u4f1a\u5bfc\u81f4\u6700\u540e 1s \u7684\u65e5\u5fd7\u4e22\u5931\u3002<br \/>\n\u4e0a\u9762\u8bf4\u5230\u7684\u300c\u6700\u540e 1s\u300d\u5e76\u4e0d\u662f\u7edd\u5bf9\u7684\uff0c\u6709\u7684\u65f6\u5019\u4f1a\u4e22\u5931 \u66f4\u591a\u6570\u636e\u3002\u6709\u65f6\u5019\u7531\u4e8e\u8c03\u5ea6\u7684\u95ee\u9898\uff0c\u6bcf\u79d2\u5237\u5199\uff08once-per-second flushing\uff09\u5e76\u4e0d\u80fd\u4fdd\u8bc1 100% \u6267\u884c\u3002\u5bf9\u4e8e\u4e00\u4e9b\u6570\u636e\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u8981\u6c42\u4e0d\u9ad8\u7684\u5e94\u7528\uff0c\u914d\u7f6e\u4e3a 2 \u5c31\u8db3\u591f\u4e86\uff1b\u5982\u679c\u4e3a\u4e86\u6700\u9ad8\u6027\u80fd\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a 0\u3002\u6709\u4e9b\u5e94\u7528\uff0c\u5982\u652f\u4ed8\u670d\u52a1\uff0c\u5bf9\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u8981\u6c42\u5f88\u9ad8\uff0c\u6240\u4ee5\u5373\u4f7f\u6700\u6162\uff0c\u4e5f\u6700\u597d\u8bbe\u7f6e\u4e3a 1.<br \/>\n\u5f53\u6211\u4eec\u8bbe\u7f6e\u4e3a2 \u7684\u65f6\u5019\uff0cLog Thread \u4f1a\u5728\u6211\u4eec\u6bcf\u6b21\u4e8b\u52a1\u7ed3\u675f\u7684\u65f6\u5019\u5c06\u6570\u636e\u5199\u5165\u4e8b\u52a1\u65e5\u5fd7\uff0c\u4f46\u662f\u8fd9\u91cc\u7684\u5199\u5165\u4ec5\u4ec5\u662f\u8c03\u7528\u4e86\u6587\u4ef6\u7cfb\u7edf\u7684\u6587\u4ef6\u5199\u5165\u64cd\u4f5c\u3002\u800c\u6211\u4eec\u7684\u6587\u4ef6\u7cfb\u7edf\u90fd\u662f\u6709\u7f13\u5b58\u673a\u5236\u7684\uff0c\u6240\u4ee5Log Thread \u7684\u8fd9\u4e2a\u5199\u5165\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u5185\u5bb9\u771f\u7684\u5df2\u7ecf\u5199\u5165\u5230\u7269\u7406\u78c1\u76d8\u4e0a\u9762\u5b8c\u6210\u6301\u4e45\u5316\u7684\u52a8\u4f5c\u3002\u6587\u4ef6\u7cfb\u7edf\u4ec0\u4e48\u65f6\u5019\u4f1a\u5c06\u7f13\u5b58\u4e2d\u7684\u8fd9\u4e2a\u6570\u636e\u540c\u6b65\u5230\u7269\u7406\u78c1\u76d8\u6587\u4ef6Log Thread \u5c31\u5b8c\u5168\u4e0d\u77e5\u9053\u4e86\u3002\u6240\u4ee5\uff0c\u5f53\u8bbe\u7f6e\u4e3a2 \u7684\u65f6\u5019\uff0cMySQL Crash \u5e76\u4e0d\u4f1a\u9020\u6210\u6570\u636e\u7684\u4e22\u5931\uff0c\u4f46\u662fOS Crash \u6216\u8005\u662f\u4e3b\u673a\u65ad\u7535\u540e\u53ef\u80fd\u4e22\u5931\u7684\u6570\u636e\u91cf\u5c31\u5b8c\u5168\u63a7\u5236\u5728\u6587\u4ef6\u7cfb\u7edf\u4e0a\u4e86\u3002\u5404\u79cd\u6587\u4ef6\u7cfb\u7edf\u5bf9\u4e8e\u81ea\u5df1\u7f13\u5b58\u7684\u5237\u65b0\u673a\u5236\u5404\u4e0d\u4e00\u6837\uff0c\u5927\u5bb6\u53ef\u4ee5\u81ea\u884c\u53c2\u9605\u76f8\u5173\u7684\u624b\u518c\u3002<\/p>\n<p>sync_binlog = \u00a0N\uff1a<\/p>\n<p>N&gt;0 \u00a0\u00a0\u00a0\u6bcf\u5411\u4e8c\u8fdb\u5236\u65e5\u5fd7\u6587\u4ef6\u5199\u5165N\u6761SQL\u6216N\u4e2a\u4e8b\u52a1\u540e\uff0c\u5219\u628a\u4e8c\u8fdb\u5236\u65e5\u5fd7\u6587\u4ef6\u7684\u6570\u636e\u5237\u65b0\u5230\u78c1\u76d8\u4e0a\uff1b<br \/>\nN=0 \u00a0\u00a0\u00a0\u4e0d\u4e3b\u52a8\u5237\u65b0\u4e8c\u8fdb\u5236\u65e5\u5fd7\u6587\u4ef6\u7684\u6570\u636e\u5230\u78c1\u76d8\u4e0a\uff0c\u800c\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u51b3\u5b9a\uff1b<\/p>\n<p>\u63a8\u8350\u914d\u7f6e\u7ec4\u5408\uff1a<\/p>\n<p>N=1,1 \u00a0\u2014 \u9002\u5408\u6570\u636e\u5b89\u5168\u6027\u8981\u6c42\u975e\u5e38\u9ad8\uff0c\u800c\u4e14\u78c1\u76d8IO\u5199\u80fd\u529b\u8db3\u591f\u652f\u6301\u4e1a\u52a1\uff0c\u6bd4\u5982\u5145\u503c\u6d88\u8d39\u7cfb\u7edf\uff1b<br \/>\nN=1,0 \u00a0\u2014 \u9002\u5408\u6570\u636e\u5b89\u5168\u6027\u8981\u6c42\u9ad8\uff0c\u78c1\u76d8IO\u5199\u80fd\u529b\u652f\u6301\u4e1a\u52a1\u4e0d\u5bcc\u4f59\uff0c\u5141\u8bb8\u5907\u5e93\u843d\u540e\u6216\u65e0\u590d\u5236\uff1b<br \/>\nN=2,0\u62162,m(0&lt;m&lt;100) \u00a0\u2014 \u9002\u5408\u6570\u636e\u5b89\u5168\u6027\u6709\u8981\u6c42\uff0c\u5141\u8bb8\u4e22\u5931\u4e00\u70b9\u4e8b\u52a1\u65e5\u5fd7\uff0c\u590d\u5236\u67b6\u6784\u7684\u5ef6\u8fdf\u4e5f\u80fd\u63a5\u53d7\uff1b<br \/>\nN=0,0 \u00a0\u2014 \u78c1\u76d8IO\u5199\u80fd\u529b\u6709\u9650\uff0c\u65e0\u590d\u5236\u6216\u5141\u8bb8\u590d\u5236\u5ef6\u8fdf\u7a0d\u5fae\u957f\u70b9\u80fd\u63a5\u53d7\uff0c\u4f8b\u5982\uff1a\u65e5\u5fd7\u6027\u767b\u8bb0\u4e1a\u52a1\uff1b<br \/>\n\u5f53\u4e24\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a\u53cc1\u7684\u65f6\u5019\uff0c\u5199\u5165\u6027\u80fd\u6700\u5dee\uff0csync_binlog=N (N&gt;1 ) innodb_flush_log_at_trx_commit=2 \u65f6\uff0c(\u5728\u5f53\u524d\u6a21\u5f0f\u4e0b)MySQL\u7684\u5199\u64cd\u4f5c\u624d\u80fd\u8fbe\u5230\u6700\u9ad8\u6027\u80fd\u3002<\/p>\n<p>\u6570\u636e\u5b89\u5168\u6027<\/p>\n<p>\u5f53innodb_flush_log_at_trx_commit\u548csync_binlog \u00a0\u90fd\u4e3a1\u65f6\u662f\u6700\u5b89\u5168\u7684\uff0c\u5728mysqld \u670d\u52a1\u5d29\u6e83\u6216\u8005\u670d\u52a1\u5668\u4e3b\u673acrash\u7684\u60c5\u51b5\u4e0b\uff0cbinary log \u53ea\u6709\u53ef\u80fd\u4e22\u5931\u6700\u591a\u4e00\u4e2a\u8bed\u53e5\u6216\u8005\u4e00\u4e2a\u4e8b\u52a1\u3002\u4f46\u662f\u9c7c\u4e0e\u718a\u638c\u4e0d\u53ef\u517c\u5f97\uff0c\u90fd\u4e3a1\u4f1a\u5bfc\u81f4\u9891\u7e41\u7684IO\u64cd\u4f5c\uff0c\u56e0\u6b64\u8be5\u6a21\u5f0f\u4e5f\u662f\u6700\u6162\u7684\u4e00\u79cd\u65b9\u5f0f\u3002<br \/>\n\u5f53innodb_flush_log_at_trx_commit\u8bbe\u7f6e\u4e3a0\uff0cmysqld\u8fdb\u7a0b\u7684\u5d29\u6e83\u4f1a\u5bfc\u81f4\u4e0a\u4e00\u79d2\u949f\u6240\u6709\u4e8b\u52a1\u6570\u636e\u7684\u4e22\u5931\u3002<br \/>\n\u5f53innodb_flush_log_at_trx_commit\u8bbe\u7f6e\u4e3a2\uff0c\u53ea\u6709\u5728\u64cd\u4f5c\u7cfb\u7edf\u5d29\u6e83\u6216\u8005\u7cfb\u7edf\u6389\u7535\u7684\u60c5\u51b5\u4e0b\uff0c\u4e0a\u4e00\u79d2\u949f\u6240\u6709\u4e8b\u52a1\u6570\u636e\u624d\u53ef\u80fd\u4e22\u5931\u3002<\/p>\n<p>\u53cc1\u9002\u5408\u6570\u636e\u5b89\u5168\u6027\u8981\u6c42\u975e\u5e38\u9ad8\uff0c\u800c\u4e14\u78c1\u76d8IO\u5199\u80fd\u529b\u8db3\u591f\u652f\u6301\u4e1a\u52a1\uff0c\u6bd4\u5982\u8ba2\u5355,\u4ea4\u6613,\u5145\u503c,\u652f\u4ed8\u6d88\u8d39\u7cfb\u7edf\u3002\u53cc1\u6a21\u5f0f\u4e0b\uff0c\u5f53\u78c1\u76d8IO\u65e0\u6cd5\u6ee1\u8db3\u4e1a\u52a1\u9700\u6c42\u65f6\uff0c\u63a8\u8350\u7684\u505a\u6cd5\u662finnodb_flush_log_at_trx_commit=2 \uff0csync_binlog=N (N\u4e3a500 \u62161000) \u4e14\u4f7f\u7528\u5e26\u84c4\u7535\u6c60\u540e\u5907\u7535\u6e90\u7684\u7f13\u5b58cache\uff0c\u9632\u6b62\u7cfb\u7edf\u65ad\u7535\u5f02\u5e38\u3002<\/p>\n<p>---------------------<\/p>\n<p>\u4f5c\u8005\uff1athundermeng<br \/>\n\u6765\u6e90\uff1aCSDN<br \/>\n\u539f\u6587\uff1ahttps:\/\/blog.csdn.net\/thundermeng\/article\/details\/50448614<br \/>\n\u7248\u6743\u58f0\u660e\uff1a\u672c\u6587\u4e3a\u535a\u4e3b\u539f\u521b\u6587\u7ae0\uff0c\u8f6c\u8f7d\u8bf7\u9644\u4e0a\u535a\u6587\u94fe\u63a5\uff01<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p>-----------------------------------------------<\/p>\n<div>\n<div>\n<h3>innodb_flush_log_at_trx_commit<\/h3>\n<p>\u8be5\u53c2\u6570\u63a7\u5236\u91cd\u505a\u65e5\u5fd7\u5199\u5165\u78c1\u76d8\u7684\u8fc7\u7a0b\u3002\u6211\u4eec\u77e5\u9053 InnoDB \u4f7f\u7528\u201c<code>Write Ahead Log<\/code>\u201d\u7b56\u7565\u6765\u907f\u514d\u6570\u636e\u4e22\u5931\u95ee\u9898\uff0c\u5373\u4f9d\u9760\u91cd\u505a\u65e5\u5fd7\u6765\u4fdd\u8bc1\u6570\u636e\u80fd\u5728\u4e22\u5931\u540e\u8fdb\u884c\u6062\u590d\u3002\u56e0\u6b64\uff0cInnoDB \u91cd\u505a\u65e5\u5fd7\u7684\u6301\u4e45\u5316\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<p>\u8be5\u53c2\u6570\u7684\u6709\u6548\u503c\u6709 <strong>0<\/strong>\u3001<strong>1<\/strong>\u3001<strong>2<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>0<\/strong>: \u4e8b\u52a1\u63d0\u4ea4\u65f6\uff0c\u4e0d\u5c06\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u5199\u5165\u78c1\u76d8\uff0c\u800c\u662f\u4f9d\u9760 InnoDB \u7684\u4e3b\u7ebf\u7a0b\u6bcf\u79d2\u6267\u884c\u4e00\u6b21\u5237\u65b0\u5230\u78c1\u76d8\u3002\u56e0\u6b64\u5982\u679c MySQL \u53d1\u751f\u5b95\u673a\uff0c\u90a3\u4e48\u5c31\u6709\u53ef\u80fd\u4e22\u5931\u4e00\u90e8\u5206\u4e8b\u52a1\u3002<\/li>\n<li><strong>1<\/strong>: \u4e8b\u52a1\u63d0\u4ea4\u65f6\uff0c\u4f1a\u5c06\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u5199\u5165\u78c1\u76d8\uff0c\u5e76\u4e14\u7acb\u5373\u5237\u65b0\uff08<code>fsync()<\/code>\uff09\u3002\u6ce8\u610f\uff0c\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u7684\u201c\u5ef6\u8fdf\u5199\u201d\u7279\u6027\uff0c\u6b64\u65f6\u7684\u5237\u5165\u53ea\u662f\u5199\u5230\u4e86\u64cd\u4f5c\u7cfb\u7edf\u7684\u7f13\u51b2\u533a\u4e2d\uff0c\u56e0\u6b64\u6267\u884c\u540c\u6b65\u64cd\u4f5c\u624d\u80fd\u4fdd\u8bc1\u4e00\u5b9a\u6301\u4e45\u5316\u5230\u4e86\u786c\u76d8\u4e2d\u3002<\/li>\n<li><strong>2<\/strong>: \u4e8b\u52a1\u63d0\u4ea4\u65f6\uff0c\u4f1a\u5c06\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u5199\u5165\u78c1\u76d8\uff0c\u4f46\u662f\u4e0d\u4f1a\u7acb\u5373\u8fdb\u884c\u5237\u65b0\u64cd\u4f5c\uff0c\u56e0\u6b64\u53ea\u662f\u5199\u5230\u4e86\u64cd\u4f5c\u7cfb\u7edf\u7684\u7f13\u51b2\u533a\u3002\u6b64\u65f6\u82e5\u64cd\u4f5c\u7cfb\u7edf\u53d1\u751f\u5b95\u673a\u800c\u6ca1\u6709\u5373\u4f7f\u7684\u540c\u6b65\uff0c\u4e5f\u53ef\u80fd\u4f1a\u4e22\u5931\u4e00\u90e8\u5206\u6570\u636e\u3002<\/li>\n<\/ul>\n<h4>\u5f71\u54cd<\/h4>\n<ul>\n<li>\u5f53\u8bbe\u7f6e\u4e3a0\uff0c\u8be5\u6a21\u5f0f\u901f\u5ea6\u6700\u5feb\uff0c\u4f46\u4e0d\u592a\u5b89\u5168\uff0cmysqld\u8fdb\u7a0b\u7684\u5d29\u6e83\u4f1a\u5bfc\u81f4\u4e0a\u4e00\u79d2\u949f\u6240\u6709\u4e8b\u52a1\u6570\u636e\u7684\u4e22\u5931\u3002<\/li>\n<li>\u5f53\u8bbe\u7f6e\u4e3a1\uff0c\u8be5\u6a21\u5f0f\u662f\u6700\u5b89\u5168\u7684\uff0c\u4f46\u4e5f\u662f\u6700\u6162\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u5728mysqld \u670d\u52a1\u5d29\u6e83\u6216\u8005\u670d\u52a1\u5668\u4e3b\u673acrash\u7684\u60c5\u51b5\u4e0b\uff0cbinary log \u53ea\u6709\u53ef\u80fd\u4e22\u5931\u6700\u591a\u4e00\u4e2a\u8bed\u53e5\u6216\u8005\u4e00\u4e2a\u4e8b\u52a1\u3002\u3002<\/li>\n<li>\u5f53\u8bbe\u7f6e\u4e3a2\uff0c\u8be5\u6a21\u5f0f\u901f\u5ea6\u8f83\u5feb\uff0c\u4e5f\u6bd40\u5b89\u5168\uff0c\u53ea\u6709\u5728\u64cd\u4f5c\u7cfb\u7edf\u5d29\u6e83\u6216\u8005\u7cfb\u7edf\u65ad\u7535\u7684\u60c5\u51b5\u4e0b\uff0c\u4e0a\u4e00\u79d2\u949f\u6240\u6709\u4e8b\u52a1\u6570\u636e\u624d\u53ef\u80fd\u4e22\u5931\u3002<\/li>\n<\/ul>\n<h3>sync_binlog<\/h3>\n<p>\u8be5\u53c2\u6570\u63a7\u5236\u7740\u4e8c\u8fdb\u5236\u65e5\u5fd7\u5199\u5165\u78c1\u76d8\u7684\u8fc7\u7a0b\u3002<\/p>\n<p>\u8be5\u53c2\u6570\u7684\u6709\u6548\u503c\u4e3a<strong>0<\/strong> \u3001<strong>1<\/strong>\u3001<strong>N<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>0<\/strong>\uff1a\u9ed8\u8ba4\u503c\u3002\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u5c06\u4e8c\u8fdb\u5236\u65e5\u5fd7\u4ece\u7f13\u51b2\u5199\u5165\u78c1\u76d8\uff0c\u4f46\u662f\u4e0d\u8fdb\u884c\u5237\u65b0\u64cd\u4f5c\uff08<code>fsync()<\/code>\uff09\uff0c\u6b64\u65f6\u53ea\u662f\u5199\u5165\u4e86\u64cd\u4f5c\u7cfb\u7edf\u7f13\u51b2\uff0c\u82e5\u64cd\u4f5c\u7cfb\u7edf\u5b95\u673a\u5219\u4f1a\u4e22\u5931\u90e8\u5206\u4e8c\u8fdb\u5236\u65e5\u5fd7\u3002<\/li>\n<li><strong>1<\/strong>\uff1a\u4e8b\u52a1\u63d0\u4ea4\u540e\uff0c\u5c06\u4e8c\u8fdb\u5236\u6587\u4ef6\u5199\u5165\u78c1\u76d8\u5e76\u7acb\u5373\u6267\u884c\u5237\u65b0\u64cd\u4f5c\uff0c\u76f8\u5f53\u4e8e\u662f\u540c\u6b65\u5199\u5165\u78c1\u76d8\uff0c\u4e0d\u7ecf\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u7684\u7f13\u5b58\u3002<\/li>\n<li><strong>N<\/strong>\uff1a\u6bcf\u5199N\u6b21\u64cd\u4f5c\u7cfb\u7edf\u7f13\u51b2\u5c31\u6267\u884c\u4e00\u6b21\u5237\u65b0\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/div>\n<p>\u4f5c\u8005\uff1a\u98ce\u4ea1\u5c0f\u7a9d<br \/>\n\u94fe\u63a5\uff1ahttps:\/\/www.jianshu.com\/p\/a767b2665eda<br \/>\n\u6765\u6e90\uff1a\u7b80\u4e66<br \/>\n\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/p><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>innodb_flush_log_at_trx_commit\u548csync_binl &hellip; <a href=\"https:\/\/www.xiaobo.li\/notes\/archives\/1797\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[],"class_list":["post-1797","post","type-post","status-publish","format-standard","hentry","category-db"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=1797"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/1797\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=1797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=1797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=1797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}