\u8fd9\u4e09\u79cd\u65e5\u5fd7\u5728\u7c92\u5ea6\u3001\u8bed\u4e49\u3001\u6062\u590d\u65b9\u5f0f\u548c\u9002\u7528\u573a\u666f\u4e0a\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002<\/p>\n
\u4e8c\u3001\u4e09\u79cd\u65e5\u5fd7\u683c\u5f0f\u8be6\u89e3<\/h2>\n1. \u903b\u8f91\u65e5\u5fd7（Logical Logging）<\/h3>\n\n- \u5b9a\u4e49：\u8bb0\u5f55\u4e8b\u52a1\u7684\u9ad8\u5c42\u64cd\u4f5c\u8bed\u4e49，\u5982 SQL \u8bed\u53e5\u6216\u884c\u7ea7\u53d8\u66f4\u3002<\/li>\n
- \u7279\u70b9：\n
\n- \u4e0e\u5b58\u50a8\u7ed3\u6784\u65e0\u5173；<\/li>\n
- \u53ef\u8de8\u7248\u672c\u3001\u8de8\u5f15\u64ce\u91cd\u653e；<\/li>\n
- \u9002\u7528\u4e8e\u590d\u5236\u3001\u903b\u8f91\u5907\u4efd\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5b9e\u73b0：Binary Log（binlog）\n
\n- STATEMENT \u683c\u5f0f：\u8bb0\u5f55\u539f\u59cb SQL；<\/li>\n
- ROW \u683c\u5f0f：\u8bb0\u5f55\u4e3b\u952e + \u5217\u503c\u53d8\u66f4（\u4ecd\u5c5e\u903b\u8f91\u5c42，\u56e0\u4e0d\u6d89\u53ca\u9875\/\u504f\u79fb）\u3002<\/li>\n
- mixed\u683c\u5f0f：\u6df7\u5408\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
\u793a\u4f8b（ROW \u683c\u5f0f）：<\/p>\n
Table_map: test.T
\nWrite_rows: (c1=1, c2='abc')<\/p>\n
2. \u7269\u7406\u65e5\u5fd7（Physical Logging）<\/h3>\n\n- \u5b9a\u4e49：\u8bb0\u5f55\u5e95\u5c42\u5b58\u50a8\u7684\u5b57\u8282\u7ea7\u53d8\u5316，\u5982\u201c\u5c06\u9875 X \u504f\u79fb Y \u5904\u7684 Z \u5b57\u8282\u4ece A \u6539\u4e3a B\u201d\u3002<\/li>\n
- \u7279\u70b9：\n
\n- \u9ad8\u5ea6\u4f9d\u8d56\u9875\u683c\u5f0f；<\/li>\n
- \u6062\u590d\u65f6\u76f4\u63a5 memcpy \u8986\u76d6\u5185\u5b58；<\/li>\n
- \u65e0\u6cd5\u652f\u6301\u9875\u7ed3\u6784\u6f14\u8fdb\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5b9e\u73b0：InnoDB \u672a\u4f7f\u7528\u7eaf\u7269\u7406\u65e5\u5fd7\u3002<\/li>\n
- \u5178\u578b\u7cfb\u7edf：LevelDB WAL\u3001\u65e9\u671f Berkeley DB\u3002<\/li>\n<\/ul>\n
InnoDB \u4e0d\u91c7\u7528\u6b64\u6a21\u5f0f，\u56e0\u5176\u65e0\u6cd5\u517c\u5bb9\u538b\u7f29\u9875\u3001\u52a0\u5bc6\u9875\u7b49\u9ad8\u7ea7\u7279\u6027\u3002<\/p>\n
3. \u7269\u7406\u903b\u8f91\u65e5\u5fd7（Physiological Logging）<\/h3>\n\n- \u5b9a\u4e49：\u4ee5 \u7269\u7406\u9875\u4e3a\u4f5c\u7528\u57df，\u8bb0\u5f55 \u9875\u5185\u7684\u903b\u8f91\u64cd\u4f5c，\u5728\u9875 X \u4e0a\u63d2\u5165\u8bb0\u5f55 Y\u3002<\/li>\n
- \u7279\u70b9：\n
\n- \u65e5\u5fd7 = <page_id, operation, args>；<\/li>\n
- \u6062\u590d\u65f6\u8c03\u7528\u5b58\u50a8\u5f15\u64ce\u51fd\u6570\u91cd\u505a\u64cd\u4f5c（\u975e\u5b57\u8282\u8986\u5199）；<\/li>\n
- \u517c\u987e\u6548\u7387\u4e0e\u7075\u6d3b\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5b9e\u73b0：InnoDB Redo Log<\/li>\n<\/ul>\n
\u2705 \u793a\u4f8b：<\/p>\n
<MLOG_REC_INSERT, space=1, page_no=100, record=(1,'abc'), index_id=PRIMARY>
\n<MLOG_REC_INSERT, space=1, page_no=200, record=(1,ptr), index_id=key_c1><\/p>\n
\u4e09\u3001\u4ee5\u4e00\u6761 INSERT \u4e3a\u4f8b：\u4e09\u79cd\u65e5\u5fd7\u7684\u751f\u6210\u5bf9\u6bd4<\/h2>\n
\u5047\u8bbe\u6267\u884c：<\/p>\n
CREATE<\/span> TABLE<\/span> T (<\/span>c1 INT<\/span>,<\/span> c2 VARCHAR<\/span>(<\/span>10<\/span>)<\/span>,<\/span> KEY<\/span>(<\/span>c1)<\/span>)<\/span> ENGINE<\/span>=<\/span>InnoDB<\/span>;<\/span>
\nINSERT<\/span> INTO<\/span> T VALUES<\/span> (<\/span>1<\/span>,<\/span> 'abc'<\/span>)<\/span>;<\/span><\/p>\n\u63d2\u5165\u4e00\u884c (1, 'abc')，\u6d89\u53ca：<\/p>\n
\n- \u805a\u7c07\u7d22\u5f15（\u4e3b\u952e\u7d22\u5f15，\u9ed8\u8ba4\u57fa\u4e8e rowid \u6216\u9690\u5f0f\u4e3b\u952e）<\/li>\n
- \u4e8c\u7ea7\u7d22\u5f15 key_c1<\/li>\n<\/ul>\n
\u901a\u5e38\u81f3\u5c11\u4fee\u6539 \u4e24\u4e2a B+ \u6811\u9875（\u805a\u7c07\u7d22\u5f15\u9875 + \u4e8c\u7ea7\u7d22\u5f15\u9875）\u3002<\/p>\n
1. \u903b\u8f91\u65e5\u5fd7（Logical Log）\u8bb0\u5f55\u60c5\u51b5<\/h3>\n\n- \u8bb0\u5f55\u5185\u5bb9：\u4e8b\u52a1\u7684\u9ad8\u5c42\u8bed\u4e49<\/li>\n
- \u793a\u4f8b：<INSERT, table=T, values=(1, 'abc')>\n<\/li>\n
- MySQL \u5bf9\u5e94：binlog（ROW \u683c\u5f0f）Table_map: T
\nWrite_rows: (1, 'abc')<\/p>\n<\/li>\n - \u6570\u91cf：1 \u6761（\u6574\u4e2a INSERT \u64cd\u4f5c）<\/li>\n<\/ul>\n
2. \u7269\u7406\u903b\u8f91\u65e5\u5fd7（Physiological Log）\u8bb0\u5f55\u60c5\u51b5<\/h3>\n\n- \u8bb0\u5f55\u5185\u5bb9：\u9875 ID + \u9875\u5185\u903b\u8f91\u64cd\u4f5c<\/li>\n
- \u793a\u4f8b：<MLOG_REC_INSERT, space_id=1, page_no=100, record=(1, 'abc', DB_ROW_ID=…), index_id=PRIMARY>
\n<MLOG_REC_INSERT, space_id=1, page_no=200, record=(1, ptr_to_clustered), index_id=key_c1><\/p>\n<\/li>\n - \u7279\u70b9：\n
\n- \u6bcf\u6761\u65e5\u5fd7\u7ed1\u5b9a\u4e00\u4e2a page_no；<\/li>\n
- \u8bb0\u5f55\u7684\u662f \u201c\u5728\u9875 X \u4e0a\u63d2\u5165\u8bb0\u5f55 Y\u201d，\u800c\u975e\u5b57\u8282；<\/li>\n
- \u6062\u590d\u65f6\u9700\u8c03\u7528 InnoDB \u7684 page_cur_insert_rec_low() \u7b49\u51fd\u6570\u91cd\u505a\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5bf9\u5e94：InnoDB Redo Log<\/li>\n
- \u6570\u91cf：\u22652 \u6761（\u6bcf\u4e2a\u88ab\u4fee\u6539\u7684\u9875\u81f3\u5c11\u4e00\u6761）<\/li>\n<\/ul>\n
\u7279\u6b8a\u60c5\u51b5
\n\u53ea\u6709\u805a\u7c07\u7d22\u5f15（\u65e0\u4e8c\u7ea7\u7d22\u5f15）：\u63d2\u5165\u6570\u636e<\/p>\n
InnoDB \u5185\u90e8\u64cd\u4f5c：<\/p>\n
- \u5728 \u805a\u7c07\u7d22\u5f15（\u57fa\u4e8e DB_ROW_ID）\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55；<\/li>\n
- \u8be5\u8bb0\u5f55\u5305\u542b：DB_ROW_ID（\u81ea\u52a8\u751f\u6210）\u3001a=1\u3001b='abc'；<\/li>\n
- \u6b64\u64cd\u4f5c\u53ea\u6d89\u53ca \u4e00\u4e2a B+ \u6811（\u5373\u805a\u7c07\u7d22\u5f15\u6811）；<\/li>\n
- \u5982\u679c\u63d2\u5165\u5bfc\u81f4\u9875\u5206\u88c2（page split），\u8fd8\u4f1a\u989d\u5916\u4ea7\u751f：\n
\n- \u521b\u5efa\u65b0\u9875\u7684\u65e5\u5fd7（MLOG_PAGE_CREATE）；<\/li>\n
- \u66f4\u65b0\u7236\u9875\u6307\u9488\u7684\u65e5\u5fd7（\u5982\u679c\u662f\u975e\u53f6\u5b50\u9875）\u3002<\/li>\n<\/ul>\n<\/li>\n
\n\u573a\u666fredo log \u6761\u6570<\/tr>\n \n\n\u63d2\u5165\u5230\u5df2\u6709\u9875（\u65e0\u5206\u88c2）<\/td>\n 1 \u6761（MLOG_REC_INSERT）<\/td>\n<\/tr>\n \n\u63d2\u5165\u5bfc\u81f4\u9875\u5206\u88c2<\/td>\n \u22652 \u6761（MLOG_PAGE_CREATE + MLOG_REC_INSERT + \u53ef\u80fd\u7684\u7236\u9875\u66f4\u65b0）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u5373\u4f7f\u53ea\u6709 1 \u6761\u7528\u6237\u8bb0\u5f55\u63d2\u5165，\u4e5f\u53ef\u80fd\u56e0 B+ \u6811\u7ed3\u6784\u7ef4\u62a4\u4ea7\u751f\u591a\u6761 redo log\u3002<\/p>\n
3. \u7269\u7406\u65e5\u5fd7（Physical Log）\u8bb0\u5f55\u60c5\u51b5<\/h3>\n\n- \u8bb0\u5f55\u5185\u5bb9：\u5b57\u8282\u7ea7\u53d8\u66f4（offset + old\/new value）<\/li>\n
- \u793a\u4f8b（\u9488\u5bf9\u4e00\u4e2a\u9875\u7684\u591a\u6b21\u4fee\u6539）：<space=1, page=100, offset=24, new_value=0x0005> \/\/ \u9875\u5934：\u8bb0\u5f55\u6570\u4ece 4\u21925
\n<space=1, page=100, offset=16380, new_value=0x0064> \/\/ Slot \u6570\u7ec4\u66f4\u65b0
\n<space=1, page=100, offset=200, new_value=…> \/\/ \u65b0\u8bb0\u5f55\u5185\u5bb9
\n<space=1, page=100, offset=prev_rec+2, new_value=…> \/\/ \u524d\u4e00\u6761\u8bb0\u5f55\u7684 next \u6307\u9488<\/p>\n<\/li>\n - \u6570\u91cf：\u6bcf\u4e2a\u9875\u53ef\u80fd\u4ea7\u751f N \u6761（N \u2265 3~5 \u5f88\u5e38\u89c1）<\/li>\n
- MySQL \u662f\u5426\u4f7f\u7528？：\u5426\u3002InnoDB \u4e0d\u4f7f\u7528\u7eaf\u7269\u7406\u65e5\u5fd7\u3002<\/li>\n<\/ul>\n
\u5bf9\u6bd4\u8868<\/h3>\n
\n\u65e5\u5fd7\u7c7b\u578b\u8bb0\u5f55\u7c92\u5ea6\u751f\u6210\u5185\u5bb9\u6570\u91cf\u662f\u5426\u7531 InnoDB \u751f\u6210<\/tr>\n \n\n\u903b\u8f91\u65e5\u5fd7<\/td>\n \u8868\/\u884c\u7ea7\u64cd\u4f5c<\/td>\n <INSERT, T, (1,'abc')><\/td>\n 1 \u6761<\/td>\n \u901a\u8fc7 binlog<\/td>\n<\/tr>\n \n\u7269\u7406\u903b\u8f91\u65e5\u5fd7<\/td>\n \u9875 + \u9875\u5185\u903b\u8f91\u64cd\u4f5c<\/td>\n \u4e24\u6761\u9875\u7ea7\u63d2\u5165\u64cd\u4f5c，\u5206\u522b\u5bf9\u5e94\u805a\u7c07\u7d22\u5f15\u548c\u4e8c\u7ea7\u7d22\u5f15\u9875\u7684\u63d2\u5165\u64cd\u4f5c<\/td>\n \u22652 \u6761<\/td>\n InnoDB redo log<\/td>\n<\/tr>\n \n\u7269\u7406\u65e5\u5fd7<\/td>\n \u5b57\u8282\u504f\u79fb<\/td>\n \u591a\u6761\u5b57\u8282\u4fee\u6539（\u9875\u5934\u3001slot\u3001\u6307\u9488\u7b49）<\/td>\n \u22652\u00d7N \u6761<\/td>\n InnoDB \u4e0d\u751f\u6210<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u5173\u952e\u6d1e\u5bdf：
\nInnoDB \u8df3\u8fc7\u7eaf\u7269\u7406\u65e5\u5fd7，\u76f4\u63a5\u4ece\u903b\u8f91\u64cd\u4f5c\u751f\u6210 physiological redo log，\u907f\u514d\u4e86\u5b57\u8282\u65e5\u5fd7\u7684\u5197\u4f59\u4e0e\u8106\u5f31\u6027\u3002<\/p>\n
\u56db\u3001InnoDB \u4e3a\u4f55\u9009\u62e9 Physiological Logging？<\/h2>\n
\n\u4f18\u52bf\u8bf4\u660e<\/tr>\n \n\n\u652f\u6301\u9875\u683c\u5f0f\u6f14\u8fdb<\/td>\n \u5373\u4f7f InnoDB \u4fee\u6539\u9875\u7ed3\u6784（\u5982\u5f15\u5165\u65b0\u5b57\u6bb5），\u53ea\u8981\u64cd\u4f5c\u8bed\u4e49\u4e0d\u53d8，\u65e7\u65e5\u5fd7\u4ecd\u53ef\u91cd\u653e<\/td>\n<\/tr>\n \n\u517c\u5bb9\u538b\u7f29\/\u52a0\u5bc6\u9875<\/td>\n \u65e5\u5fd7\u8bb0\u5f55\u201c\u63d2\u5165\u8bb0\u5f55\u201d，\u800c\u975e\u201c\u5199\u5165\u504f\u79fb\u201d，\u53ef\u5728\u89e3\u538b\u540e\u9875\u4e0a\u5b89\u5168\u91cd\u505a<\/td>\n<\/tr>\n \n\u65e5\u5fd7\u4f53\u79ef\u5c0f<\/td>\n \u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u4ec5\u9700 ~50 \u5b57\u8282\u65e5\u5fd7，\u800c\u975e 16KB \u9875<\/td>\n<\/tr>\n \n\u6062\u590d\u5b89\u5168\u6027\u9ad8<\/td>\n \u901a\u8fc7\u8c03\u7528 B+ \u6811\u51fd\u6570\u91cd\u505a，\u786e\u4fdd\u9875\u7ed3\u6784\u4e00\u81f4\u6027（\u5982\u94fe\u8868\u3001slot \u66f4\u65b0\u6b63\u786e）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u4e94\u3001\u65e5\u5fd7\u534f\u540c：Redo Log + Binlog + Doublewrite Buffer<\/h2>\n
InnoDB \u7684\u53ef\u9760\u6027\u4f9d\u8d56\u4e09\u5927\u7ec4\u4ef6\u534f\u540c：
\n![\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260129110524-697b3ef45d918.png\")
<\/p>\n
\n- Redo Log（Physiological）：\u4fdd\u8bc1\u9875\u7ea7\u64cd\u4f5c\u53ef\u91cd\u505a；<\/li>\n
- Doublewrite Buffer：\u4fdd\u8bc1\u9875\u672c\u8eab\u5b8c\u6574（\u9632 partial page write）；<\/li>\n
- Binlog（Logical）：\u4fdd\u8bc1\u4e8b\u52a1\u53ef\u590d\u5236\u3001\u53ef PITR（\u65f6\u95f4\u70b9\u6062\u590d）\u3002<\/li>\n<\/ul>\n
\u6ce8\u610f：\u53ea\u6709\u5f53 innodb_flush_log_at_trx_commit=1 \u4e14 sync_binlog=1 \u65f6，\u624d\u80fd\u5b9e\u73b0\u771f\u6b63\u7684 crash-safe replication\u3002<\/p>\n
\u516d\u3001\u4e09\u79cd\u65e5\u5fd7\u6838\u5fc3\u7279\u6027<\/h2>\n
\n\u7279\u6027\u903b\u8f91\u65e5\u5fd7\u7269\u7406\u65e5\u5fd7\u7269\u7406\u903b\u8f91\u65e5\u5fd7<\/tr>\n \n\n\u8bb0\u5f55\u7c92\u5ea6<\/td>\n \u8868\/\u884c\u7ea7<\/td>\n \u5b57\u8282\u7ea7<\/td>\n \u9875 + \u9875\u5185\u64cd\u4f5c<\/td>\n<\/tr>\n \n\u662f\u5426\u4f9d\u8d56\u5b58\u50a8\u7ed3\u6784<\/td>\n \u5426<\/td>\n \u662f<\/td>\n \u90e8\u5206（\u9700\u9875 ID）<\/td>\n<\/tr>\n \n\u6062\u590d\u65b9\u5f0f<\/td>\n \u91cd\u6267\u884c SQL<\/td>\n memcpy \u8986\u5199<\/td>\n \u8c03\u7528\u5b58\u50a8\u5f15\u64ce\u51fd\u6570<\/td>\n<\/tr>\n \n\u65e5\u5fd7\u4f53\u79ef<\/td>\n \u5c0f<\/td>\n \u6781\u5927<\/td>\n \u4e2d\u7b49<\/td>\n<\/tr>\n \nMySQL \u7ec4\u4ef6<\/td>\n binlog<\/td>\n \u65e0<\/td>\n InnoDB redo log<\/td>\n<\/tr>\n \n\u9002\u7528\u573a\u666f<\/td>\n \u590d\u5236\u3001\u5907\u4efd<\/td>\n \u7b80\u5355 KV \u5b58\u50a8<\/td>\n \u5d29\u6e83\u6062\u590d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nMySQL \u901a\u8fc7 \u5206\u5c42\u65e5\u5fd7\u8bbe\u8ba1 \u5b9e\u73b0\u4e86\u9ad8\u53ef\u9760\u4e0e\u9ad8\u6027\u80fd\u7684\u7edf\u4e00：<\/p>\n
\n- \u903b\u8f91\u65e5\u5fd7（binlog） \u9762\u5411\u5e94\u7528\u4e0e\u590d\u5236；<\/li>\n
- \u7269\u7406\u903b\u8f91\u65e5\u5fd7（redo log） \u9762\u5411\u5b58\u50a8\u5f15\u64ce\u5d29\u6e83\u6062\u590d；<\/li>\n
- Doublewrite Buffer \u4f5c\u4e3a\u6700\u540e\u4e00\u9053\u9632\u7ebf，\u4fdd\u969c\u9875\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n
\u4e03\u3001\u9762\u8bd5\u9898<\/h2>\n
- \n
Q：MySQL \u4e2d\u54ea\u4e9b\u65e5\u5fd7\u5c5e\u4e8e\u903b\u8f91\u65e5\u5fd7？\u54ea\u4e9b\u5c5e\u4e8e\u7269\u7406\u903b\u8f91\u65e5\u5fd7？
\nA：binlog \u662f\u903b\u8f91\u65e5\u5fd7；InnoDB redo log \u662f\u7269\u7406\u903b\u8f91\u65e5\u5fd7（physiological logging）\u3002<\/p>\n<\/li>\n
- \n
Q：\u4e3a\u4ec0\u4e48 InnoDB \u4e0d\u4f7f\u7528\u7eaf\u7269\u7406\u65e5\u5fd7？
\nA：\u7eaf\u7269\u7406\u65e5\u5fd7\u65e0\u6cd5\u652f\u6301\u9875\u538b\u7f29\u3001\u52a0\u5bc6\u3001\u683c\u5f0f\u6f14\u8fdb，\u4e14\u6062\u590d\u65f6\u7f3a\u4e4f\u8bed\u4e49\u6821\u9a8c，\u6613\u5bfc\u81f4\u9875\u635f\u574f\u3002<\/p>\n<\/li>\n
- \n
Q：\u4e00\u6761 INSERT \u4f1a\u4ea7\u751f\u51e0\u6761 redo log？\u4e3a\u4ec0\u4e48？
\nA：\u81f3\u5c11\u4e24\u6761\u2014\u2014\u805a\u7c07\u7d22\u5f15\u9875\u548c\u6bcf\u4e2a\u4e8c\u7ea7\u7d22\u5f15\u9875\u5404\u4e00\u6761，\u56e0\u4e3a\u6bcf\u4e2a B+ \u6811\u9875\u7684\u4fee\u6539\u9700\u72ec\u7acb\u8bb0\u5f55\u3002<\/p>\n<\/li>\n
- \n
Q：Physiological logging \u5982\u4f55\u4fdd\u8bc1\u6062\u590d\u6b63\u786e\u6027？
\nA：\u6062\u590d\u65f6\u8c03\u7528 InnoDB \u7684\u9875\u7ba1\u7406\u51fd\u6570（\u5982 insert\/delete）\u91cd\u505a\u64cd\u4f5c，\u786e\u4fdd\u9875\u5185\u7ed3\u6784（\u94fe\u8868\u3001slot \u7b49）\u4e00\u81f4\u3002<\/p>\n<\/li>\n
- \n
Q：binlog \u548c redo log \u80fd\u5426\u4e92\u76f8\u66ff\u4ee3？
\nA：\u4e0d\u80fd\u3002binlog \u7528\u4e8e\u5b9e\u4f8b\u7ea7\u590d\u5236，redo log \u7528\u4e8e\u5f15\u64ce\u7ea7\u5d29\u6e83\u6062\u590d，\u4e8c\u8005\u76ee\u6807\u4e0d\u540c，\u5fc5\u987b\u5171\u5b58\u3002<\/p>\n<\/li>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u3001\u5f15\u8a00：\u65e5\u5fd7\u662f\u6570\u636e\u5e93\u53ef\u9760\u6027\u7684\u57fa\u77f3
\n\u5728\u73b0\u4ee3\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d，\u65e5\u5fd7（Logging） \u662f\u5b9e\u73b0 \u539f\u5b50\u6027（Atomicity） \u548c \u6301\u4e45\u6027（Durability） \u7684\u6838\u5fc3\u673a\u5236\u3002\u6839\u636e\u8bb0\u5f55\u5185\u5bb9\u7684\u62bd\u8c61\u5c42\u6b21，\u6570\u636e\u5e93\u65e5\u5fd7\u901a\u5e38\u5206\u4e3a\u4e09\u7c7b：
\n\u903b\u8f91\u65e5\u5fd7（Logical Logging）\u7269\u7406\u65e5\u5fd7（Physical Loggin<\/p>\n","protected":false},"author":2,"featured_media":68117,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[114,100],"topic":[],"class_list":["post-68118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-mysql","tag-100"],"yoast_head":"\n
[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/68118.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u4e00\u3001\u5f15\u8a00：\u65e5\u5fd7\u662f\u6570\u636e\u5e93\u53ef\u9760\u6027\u7684\u57fa\u77f3 \u5728\u73b0\u4ee3\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d，\u65e5\u5fd7（Logging） \u662f\u5b9e\u73b0 \u539f\u5b50\u6027（Atomicity） \u548c \u6301\u4e45\u6027（Durability） \u7684\u6838\u5fc3\u673a\u5236\u3002\u6839\u636e\u8bb0\u5f55\u5185\u5bb9\u7684\u62bd\u8c61\u5c42\u6b21，\u6570\u636e\u5e93\u65e5\u5fd7\u901a\u5e38\u5206\u4e3a\u4e09\u7c7b： \u903b\u8f91\u65e5\u5fd7（Logical Logging）\u7269\u7406\u65e5\u5fd7（Physical Loggin\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/68118.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-29T11:05:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260129110524-697b3ef45d918.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/68118.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/68118.html\",\"name\":\"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-01-29T11:05:28+00:00\",\"dateModified\":\"2026-01-29T11:05:28+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/68118.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/68118.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/68118.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/68118.html","og_locale":"zh_CN","og_type":"article","og_title":"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u4e00\u3001\u5f15\u8a00：\u65e5\u5fd7\u662f\u6570\u636e\u5e93\u53ef\u9760\u6027\u7684\u57fa\u77f3 \u5728\u73b0\u4ee3\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d，\u65e5\u5fd7（Logging） \u662f\u5b9e\u73b0 \u539f\u5b50\u6027（Atomicity） \u548c \u6301\u4e45\u6027（Durability） \u7684\u6838\u5fc3\u673a\u5236\u3002\u6839\u636e\u8bb0\u5f55\u5185\u5bb9\u7684\u62bd\u8c61\u5c42\u6b21，\u6570\u636e\u5e93\u65e5\u5fd7\u901a\u5e38\u5206\u4e3a\u4e09\u7c7b： \u903b\u8f91\u65e5\u5fd7（Logical Logging）\u7269\u7406\u65e5\u5fd7（Physical Loggin","og_url":"https:\/\/www.wsisp.com\/helps\/68118.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-01-29T11:05:28+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260129110524-697b3ef45d918.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/68118.html","url":"https:\/\/www.wsisp.com\/helps\/68118.html","name":"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-01-29T11:05:28+00:00","dateModified":"2026-01-29T11:05:28+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/68118.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/68118.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/68118.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"[\u5c0f\u6280\u5de755]\u6df1\u5165\u89e3\u6790\u6570\u636e\u5e93\u65e5\u5fd7\u673a\u5236\uff1a\u903b\u8f91\u65e5\u5fd7\u3001\u7269\u7406\u65e5\u5fd7\u4e0e\u7269\u7406\u903b\u8f91\u65e5\u5fd7\u5728 MySQL InnoDB \u4e2d\u7684\u5b9e\u73b0"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/68118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=68118"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/68118\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/68117"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=68118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=68118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=68118"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=68118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- \n
- \u5b9a\u4e49：\u8bb0\u5f55\u4e8b\u52a1\u7684\u9ad8\u5c42\u64cd\u4f5c\u8bed\u4e49，\u5982 SQL \u8bed\u53e5\u6216\u884c\u7ea7\u53d8\u66f4\u3002<\/li>\n
- \u7279\u70b9：\n
- \n
- \u4e0e\u5b58\u50a8\u7ed3\u6784\u65e0\u5173；<\/li>\n
- \u53ef\u8de8\u7248\u672c\u3001\u8de8\u5f15\u64ce\u91cd\u653e；<\/li>\n
- \u9002\u7528\u4e8e\u590d\u5236\u3001\u903b\u8f91\u5907\u4efd\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5b9e\u73b0：Binary Log（binlog）\n
- \n
- STATEMENT \u683c\u5f0f：\u8bb0\u5f55\u539f\u59cb SQL；<\/li>\n
- ROW \u683c\u5f0f：\u8bb0\u5f55\u4e3b\u952e + \u5217\u503c\u53d8\u66f4（\u4ecd\u5c5e\u903b\u8f91\u5c42，\u56e0\u4e0d\u6d89\u53ca\u9875\/\u504f\u79fb）\u3002<\/li>\n
- mixed\u683c\u5f0f：\u6df7\u5408\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
\u793a\u4f8b（ROW \u683c\u5f0f）：<\/p>\n
Table_map: test.T
\nWrite_rows: (c1=1, c2='abc')<\/p>\n2. \u7269\u7406\u65e5\u5fd7（Physical Logging）<\/h3>\n
- \n
- \u5b9a\u4e49：\u8bb0\u5f55\u5e95\u5c42\u5b58\u50a8\u7684\u5b57\u8282\u7ea7\u53d8\u5316，\u5982\u201c\u5c06\u9875 X \u504f\u79fb Y \u5904\u7684 Z \u5b57\u8282\u4ece A \u6539\u4e3a B\u201d\u3002<\/li>\n
- \u7279\u70b9：\n
- \n
- \u9ad8\u5ea6\u4f9d\u8d56\u9875\u683c\u5f0f；<\/li>\n
- \u6062\u590d\u65f6\u76f4\u63a5 memcpy \u8986\u76d6\u5185\u5b58；<\/li>\n
- \u65e0\u6cd5\u652f\u6301\u9875\u7ed3\u6784\u6f14\u8fdb\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5b9e\u73b0：InnoDB \u672a\u4f7f\u7528\u7eaf\u7269\u7406\u65e5\u5fd7\u3002<\/li>\n
- \u5178\u578b\u7cfb\u7edf：LevelDB WAL\u3001\u65e9\u671f Berkeley DB\u3002<\/li>\n<\/ul>\n
InnoDB \u4e0d\u91c7\u7528\u6b64\u6a21\u5f0f，\u56e0\u5176\u65e0\u6cd5\u517c\u5bb9\u538b\u7f29\u9875\u3001\u52a0\u5bc6\u9875\u7b49\u9ad8\u7ea7\u7279\u6027\u3002<\/p>\n
3. \u7269\u7406\u903b\u8f91\u65e5\u5fd7（Physiological Logging）<\/h3>\n
- \n
- \u5b9a\u4e49：\u4ee5 \u7269\u7406\u9875\u4e3a\u4f5c\u7528\u57df，\u8bb0\u5f55 \u9875\u5185\u7684\u903b\u8f91\u64cd\u4f5c，\u5728\u9875 X \u4e0a\u63d2\u5165\u8bb0\u5f55 Y\u3002<\/li>\n
- \u7279\u70b9：\n
- \n
- \u65e5\u5fd7 = <page_id, operation, args>；<\/li>\n
- \u6062\u590d\u65f6\u8c03\u7528\u5b58\u50a8\u5f15\u64ce\u51fd\u6570\u91cd\u505a\u64cd\u4f5c（\u975e\u5b57\u8282\u8986\u5199）；<\/li>\n
- \u517c\u987e\u6548\u7387\u4e0e\u7075\u6d3b\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5b9e\u73b0：InnoDB Redo Log<\/li>\n<\/ul>\n
\u2705 \u793a\u4f8b：<\/p>\n
<MLOG_REC_INSERT, space=1, page_no=100, record=(1,'abc'), index_id=PRIMARY>
\n<MLOG_REC_INSERT, space=1, page_no=200, record=(1,ptr), index_id=key_c1><\/p>\n\u4e09\u3001\u4ee5\u4e00\u6761 INSERT \u4e3a\u4f8b：\u4e09\u79cd\u65e5\u5fd7\u7684\u751f\u6210\u5bf9\u6bd4<\/h2>\n
\u5047\u8bbe\u6267\u884c：<\/p>\n
CREATE<\/span> TABLE<\/span> T (<\/span>c1 INT<\/span>,<\/span> c2 VARCHAR<\/span>(<\/span>10<\/span>)<\/span>,<\/span> KEY<\/span>(<\/span>c1)<\/span>)<\/span> ENGINE<\/span>=<\/span>InnoDB<\/span>;<\/span>
\nINSERT<\/span> INTO<\/span> T VALUES<\/span> (<\/span>1<\/span>,<\/span> 'abc'<\/span>)<\/span>;<\/span><\/p>\n\u63d2\u5165\u4e00\u884c (1, 'abc')，\u6d89\u53ca：<\/p>\n
- \n
- \u805a\u7c07\u7d22\u5f15（\u4e3b\u952e\u7d22\u5f15，\u9ed8\u8ba4\u57fa\u4e8e rowid \u6216\u9690\u5f0f\u4e3b\u952e）<\/li>\n
- \u4e8c\u7ea7\u7d22\u5f15 key_c1<\/li>\n<\/ul>\n
\u901a\u5e38\u81f3\u5c11\u4fee\u6539 \u4e24\u4e2a B+ \u6811\u9875（\u805a\u7c07\u7d22\u5f15\u9875 + \u4e8c\u7ea7\u7d22\u5f15\u9875）\u3002<\/p>\n
1. \u903b\u8f91\u65e5\u5fd7（Logical Log）\u8bb0\u5f55\u60c5\u51b5<\/h3>\n
- \n
- \u8bb0\u5f55\u5185\u5bb9：\u4e8b\u52a1\u7684\u9ad8\u5c42\u8bed\u4e49<\/li>\n
- \u793a\u4f8b：<INSERT, table=T, values=(1, 'abc')>\n<\/li>\n
- MySQL \u5bf9\u5e94：binlog（ROW \u683c\u5f0f）Table_map: T
\nWrite_rows: (1, 'abc')<\/p>\n<\/li>\n - \u6570\u91cf：1 \u6761（\u6574\u4e2a INSERT \u64cd\u4f5c）<\/li>\n<\/ul>\n
2. \u7269\u7406\u903b\u8f91\u65e5\u5fd7（Physiological Log）\u8bb0\u5f55\u60c5\u51b5<\/h3>\n
- \n
- \u8bb0\u5f55\u5185\u5bb9：\u9875 ID + \u9875\u5185\u903b\u8f91\u64cd\u4f5c<\/li>\n
- \u793a\u4f8b：<MLOG_REC_INSERT, space_id=1, page_no=100, record=(1, 'abc', DB_ROW_ID=…), index_id=PRIMARY>
\n<MLOG_REC_INSERT, space_id=1, page_no=200, record=(1, ptr_to_clustered), index_id=key_c1><\/p>\n<\/li>\n - \u7279\u70b9：\n
- \n
- \u6bcf\u6761\u65e5\u5fd7\u7ed1\u5b9a\u4e00\u4e2a page_no；<\/li>\n
- \u8bb0\u5f55\u7684\u662f \u201c\u5728\u9875 X \u4e0a\u63d2\u5165\u8bb0\u5f55 Y\u201d，\u800c\u975e\u5b57\u8282；<\/li>\n
- \u6062\u590d\u65f6\u9700\u8c03\u7528 InnoDB \u7684 page_cur_insert_rec_low() \u7b49\u51fd\u6570\u91cd\u505a\u3002<\/li>\n<\/ul>\n<\/li>\n
- MySQL \u5bf9\u5e94：InnoDB Redo Log<\/li>\n
- \u6570\u91cf：\u22652 \u6761（\u6bcf\u4e2a\u88ab\u4fee\u6539\u7684\u9875\u81f3\u5c11\u4e00\u6761）<\/li>\n<\/ul>\n
\u7279\u6b8a\u60c5\u51b5
\n\u53ea\u6709\u805a\u7c07\u7d22\u5f15（\u65e0\u4e8c\u7ea7\u7d22\u5f15）：\u63d2\u5165\u6570\u636e<\/p>\nInnoDB \u5185\u90e8\u64cd\u4f5c：<\/p>\n
- \u5728 \u805a\u7c07\u7d22\u5f15（\u57fa\u4e8e DB_ROW_ID）\u4e2d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55；<\/li>\n
- \u8be5\u8bb0\u5f55\u5305\u542b：DB_ROW_ID（\u81ea\u52a8\u751f\u6210）\u3001a=1\u3001b='abc'；<\/li>\n
- \u6b64\u64cd\u4f5c\u53ea\u6d89\u53ca \u4e00\u4e2a B+ \u6811（\u5373\u805a\u7c07\u7d22\u5f15\u6811）；<\/li>\n
- \u5982\u679c\u63d2\u5165\u5bfc\u81f4\u9875\u5206\u88c2（page split），\u8fd8\u4f1a\u989d\u5916\u4ea7\u751f：\n
- \n
- \u521b\u5efa\u65b0\u9875\u7684\u65e5\u5fd7（MLOG_PAGE_CREATE）；<\/li>\n
- \u66f4\u65b0\u7236\u9875\u6307\u9488\u7684\u65e5\u5fd7（\u5982\u679c\u662f\u975e\u53f6\u5b50\u9875）\u3002<\/li>\n<\/ul>\n<\/li>\n
\n
\u573a\u666fredo log \u6761\u6570<\/tr>\n \n\n \u63d2\u5165\u5230\u5df2\u6709\u9875（\u65e0\u5206\u88c2）<\/td>\n 1 \u6761（MLOG_REC_INSERT）<\/td>\n<\/tr>\n \n \u63d2\u5165\u5bfc\u81f4\u9875\u5206\u88c2<\/td>\n \u22652 \u6761（MLOG_PAGE_CREATE + MLOG_REC_INSERT + \u53ef\u80fd\u7684\u7236\u9875\u66f4\u65b0）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u5373\u4f7f\u53ea\u6709 1 \u6761\u7528\u6237\u8bb0\u5f55\u63d2\u5165，\u4e5f\u53ef\u80fd\u56e0 B+ \u6811\u7ed3\u6784\u7ef4\u62a4\u4ea7\u751f\u591a\u6761 redo log\u3002<\/p>\n
3. \u7269\u7406\u65e5\u5fd7（Physical Log）\u8bb0\u5f55\u60c5\u51b5<\/h3>\n
- \n
- \u8bb0\u5f55\u5185\u5bb9：\u5b57\u8282\u7ea7\u53d8\u66f4（offset + old\/new value）<\/li>\n
- \u793a\u4f8b（\u9488\u5bf9\u4e00\u4e2a\u9875\u7684\u591a\u6b21\u4fee\u6539）：<space=1, page=100, offset=24, new_value=0x0005> \/\/ \u9875\u5934：\u8bb0\u5f55\u6570\u4ece 4\u21925
\n<space=1, page=100, offset=16380, new_value=0x0064> \/\/ Slot \u6570\u7ec4\u66f4\u65b0
\n<space=1, page=100, offset=200, new_value=…> \/\/ \u65b0\u8bb0\u5f55\u5185\u5bb9
\n<space=1, page=100, offset=prev_rec+2, new_value=…> \/\/ \u524d\u4e00\u6761\u8bb0\u5f55\u7684 next \u6307\u9488<\/p>\n<\/li>\n - \u6570\u91cf：\u6bcf\u4e2a\u9875\u53ef\u80fd\u4ea7\u751f N \u6761（N \u2265 3~5 \u5f88\u5e38\u89c1）<\/li>\n
- MySQL \u662f\u5426\u4f7f\u7528？：\u5426\u3002InnoDB \u4e0d\u4f7f\u7528\u7eaf\u7269\u7406\u65e5\u5fd7\u3002<\/li>\n<\/ul>\n
\u5bf9\u6bd4\u8868<\/h3>\n
\n
\u65e5\u5fd7\u7c7b\u578b\u8bb0\u5f55\u7c92\u5ea6\u751f\u6210\u5185\u5bb9\u6570\u91cf\u662f\u5426\u7531 InnoDB \u751f\u6210<\/tr>\n \n\n \u903b\u8f91\u65e5\u5fd7<\/td>\n \u8868\/\u884c\u7ea7\u64cd\u4f5c<\/td>\n <INSERT, T, (1,'abc')><\/td>\n 1 \u6761<\/td>\n \u901a\u8fc7 binlog<\/td>\n<\/tr>\n \n \u7269\u7406\u903b\u8f91\u65e5\u5fd7<\/td>\n \u9875 + \u9875\u5185\u903b\u8f91\u64cd\u4f5c<\/td>\n \u4e24\u6761\u9875\u7ea7\u63d2\u5165\u64cd\u4f5c，\u5206\u522b\u5bf9\u5e94\u805a\u7c07\u7d22\u5f15\u548c\u4e8c\u7ea7\u7d22\u5f15\u9875\u7684\u63d2\u5165\u64cd\u4f5c<\/td>\n \u22652 \u6761<\/td>\n InnoDB redo log<\/td>\n<\/tr>\n \n \u7269\u7406\u65e5\u5fd7<\/td>\n \u5b57\u8282\u504f\u79fb<\/td>\n \u591a\u6761\u5b57\u8282\u4fee\u6539（\u9875\u5934\u3001slot\u3001\u6307\u9488\u7b49）<\/td>\n \u22652\u00d7N \u6761<\/td>\n InnoDB \u4e0d\u751f\u6210<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u5173\u952e\u6d1e\u5bdf：
\nInnoDB \u8df3\u8fc7\u7eaf\u7269\u7406\u65e5\u5fd7，\u76f4\u63a5\u4ece\u903b\u8f91\u64cd\u4f5c\u751f\u6210 physiological redo log，\u907f\u514d\u4e86\u5b57\u8282\u65e5\u5fd7\u7684\u5197\u4f59\u4e0e\u8106\u5f31\u6027\u3002<\/p>\n\u56db\u3001InnoDB \u4e3a\u4f55\u9009\u62e9 Physiological Logging？<\/h2>\n
\n
\u4f18\u52bf\u8bf4\u660e<\/tr>\n \n\n \u652f\u6301\u9875\u683c\u5f0f\u6f14\u8fdb<\/td>\n \u5373\u4f7f InnoDB \u4fee\u6539\u9875\u7ed3\u6784（\u5982\u5f15\u5165\u65b0\u5b57\u6bb5），\u53ea\u8981\u64cd\u4f5c\u8bed\u4e49\u4e0d\u53d8，\u65e7\u65e5\u5fd7\u4ecd\u53ef\u91cd\u653e<\/td>\n<\/tr>\n \n \u517c\u5bb9\u538b\u7f29\/\u52a0\u5bc6\u9875<\/td>\n \u65e5\u5fd7\u8bb0\u5f55\u201c\u63d2\u5165\u8bb0\u5f55\u201d，\u800c\u975e\u201c\u5199\u5165\u504f\u79fb\u201d，\u53ef\u5728\u89e3\u538b\u540e\u9875\u4e0a\u5b89\u5168\u91cd\u505a<\/td>\n<\/tr>\n \n \u65e5\u5fd7\u4f53\u79ef\u5c0f<\/td>\n \u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u4ec5\u9700 ~50 \u5b57\u8282\u65e5\u5fd7，\u800c\u975e 16KB \u9875<\/td>\n<\/tr>\n \n \u6062\u590d\u5b89\u5168\u6027\u9ad8<\/td>\n \u901a\u8fc7\u8c03\u7528 B+ \u6811\u51fd\u6570\u91cd\u505a，\u786e\u4fdd\u9875\u7ed3\u6784\u4e00\u81f4\u6027（\u5982\u94fe\u8868\u3001slot \u66f4\u65b0\u6b63\u786e）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e94\u3001\u65e5\u5fd7\u534f\u540c：Redo Log + Binlog + Doublewrite Buffer<\/h2>\n
InnoDB \u7684\u53ef\u9760\u6027\u4f9d\u8d56\u4e09\u5927\u7ec4\u4ef6\u534f\u540c：
\n<\/p>\n- \n
- Redo Log（Physiological）：\u4fdd\u8bc1\u9875\u7ea7\u64cd\u4f5c\u53ef\u91cd\u505a；<\/li>\n
- Doublewrite Buffer：\u4fdd\u8bc1\u9875\u672c\u8eab\u5b8c\u6574（\u9632 partial page write）；<\/li>\n
- Binlog（Logical）：\u4fdd\u8bc1\u4e8b\u52a1\u53ef\u590d\u5236\u3001\u53ef PITR（\u65f6\u95f4\u70b9\u6062\u590d）\u3002<\/li>\n<\/ul>\n
\u6ce8\u610f：\u53ea\u6709\u5f53 innodb_flush_log_at_trx_commit=1 \u4e14 sync_binlog=1 \u65f6，\u624d\u80fd\u5b9e\u73b0\u771f\u6b63\u7684 crash-safe replication\u3002<\/p>\n
\u516d\u3001\u4e09\u79cd\u65e5\u5fd7\u6838\u5fc3\u7279\u6027<\/h2>\n
\n
\u7279\u6027\u903b\u8f91\u65e5\u5fd7\u7269\u7406\u65e5\u5fd7\u7269\u7406\u903b\u8f91\u65e5\u5fd7<\/tr>\n \n\n \u8bb0\u5f55\u7c92\u5ea6<\/td>\n \u8868\/\u884c\u7ea7<\/td>\n \u5b57\u8282\u7ea7<\/td>\n \u9875 + \u9875\u5185\u64cd\u4f5c<\/td>\n<\/tr>\n \n \u662f\u5426\u4f9d\u8d56\u5b58\u50a8\u7ed3\u6784<\/td>\n \u5426<\/td>\n \u662f<\/td>\n \u90e8\u5206（\u9700\u9875 ID）<\/td>\n<\/tr>\n \n \u6062\u590d\u65b9\u5f0f<\/td>\n \u91cd\u6267\u884c SQL<\/td>\n memcpy \u8986\u5199<\/td>\n \u8c03\u7528\u5b58\u50a8\u5f15\u64ce\u51fd\u6570<\/td>\n<\/tr>\n \n \u65e5\u5fd7\u4f53\u79ef<\/td>\n \u5c0f<\/td>\n \u6781\u5927<\/td>\n \u4e2d\u7b49<\/td>\n<\/tr>\n \n MySQL \u7ec4\u4ef6<\/td>\n binlog<\/td>\n \u65e0<\/td>\n InnoDB redo log<\/td>\n<\/tr>\n \n \u9002\u7528\u573a\u666f<\/td>\n \u590d\u5236\u3001\u5907\u4efd<\/td>\n \u7b80\u5355 KV \u5b58\u50a8<\/td>\n \u5d29\u6e83\u6062\u590d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n MySQL \u901a\u8fc7 \u5206\u5c42\u65e5\u5fd7\u8bbe\u8ba1 \u5b9e\u73b0\u4e86\u9ad8\u53ef\u9760\u4e0e\u9ad8\u6027\u80fd\u7684\u7edf\u4e00：<\/p>\n
- \n
- \u903b\u8f91\u65e5\u5fd7（binlog） \u9762\u5411\u5e94\u7528\u4e0e\u590d\u5236；<\/li>\n
- \u7269\u7406\u903b\u8f91\u65e5\u5fd7（redo log） \u9762\u5411\u5b58\u50a8\u5f15\u64ce\u5d29\u6e83\u6062\u590d；<\/li>\n
- Doublewrite Buffer \u4f5c\u4e3a\u6700\u540e\u4e00\u9053\u9632\u7ebf，\u4fdd\u969c\u9875\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n
\u4e03\u3001\u9762\u8bd5\u9898<\/h2>\n
- \n
Q：MySQL \u4e2d\u54ea\u4e9b\u65e5\u5fd7\u5c5e\u4e8e\u903b\u8f91\u65e5\u5fd7？\u54ea\u4e9b\u5c5e\u4e8e\u7269\u7406\u903b\u8f91\u65e5\u5fd7？
\nA：binlog \u662f\u903b\u8f91\u65e5\u5fd7；InnoDB redo log \u662f\u7269\u7406\u903b\u8f91\u65e5\u5fd7（physiological logging）\u3002<\/p>\n<\/li>\n - \n
Q：\u4e3a\u4ec0\u4e48 InnoDB \u4e0d\u4f7f\u7528\u7eaf\u7269\u7406\u65e5\u5fd7？
\nA：\u7eaf\u7269\u7406\u65e5\u5fd7\u65e0\u6cd5\u652f\u6301\u9875\u538b\u7f29\u3001\u52a0\u5bc6\u3001\u683c\u5f0f\u6f14\u8fdb，\u4e14\u6062\u590d\u65f6\u7f3a\u4e4f\u8bed\u4e49\u6821\u9a8c，\u6613\u5bfc\u81f4\u9875\u635f\u574f\u3002<\/p>\n<\/li>\n - \n
Q：\u4e00\u6761 INSERT \u4f1a\u4ea7\u751f\u51e0\u6761 redo log？\u4e3a\u4ec0\u4e48？
\nA：\u81f3\u5c11\u4e24\u6761\u2014\u2014\u805a\u7c07\u7d22\u5f15\u9875\u548c\u6bcf\u4e2a\u4e8c\u7ea7\u7d22\u5f15\u9875\u5404\u4e00\u6761，\u56e0\u4e3a\u6bcf\u4e2a B+ \u6811\u9875\u7684\u4fee\u6539\u9700\u72ec\u7acb\u8bb0\u5f55\u3002<\/p>\n<\/li>\n - \n
Q：Physiological logging \u5982\u4f55\u4fdd\u8bc1\u6062\u590d\u6b63\u786e\u6027？
\nA：\u6062\u590d\u65f6\u8c03\u7528 InnoDB \u7684\u9875\u7ba1\u7406\u51fd\u6570（\u5982 insert\/delete）\u91cd\u505a\u64cd\u4f5c，\u786e\u4fdd\u9875\u5185\u7ed3\u6784（\u94fe\u8868\u3001slot \u7b49）\u4e00\u81f4\u3002<\/p>\n<\/li>\n - \n
Q：binlog \u548c redo log \u80fd\u5426\u4e92\u76f8\u66ff\u4ee3？
\nA：\u4e0d\u80fd\u3002binlog \u7528\u4e8e\u5b9e\u4f8b\u7ea7\u590d\u5236，redo log \u7528\u4e8e\u5f15\u64ce\u7ea7\u5d29\u6e83\u6062\u590d，\u4e8c\u8005\u76ee\u6807\u4e0d\u540c，\u5fc5\u987b\u5171\u5b58\u3002<\/p>\n<\/li>\n","protected":false},"excerpt":{"rendered":"\u4e00\u3001\u5f15\u8a00：\u65e5\u5fd7\u662f\u6570\u636e\u5e93\u53ef\u9760\u6027\u7684\u57fa\u77f3
\n\u5728\u73b0\u4ee3\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d，\u65e5\u5fd7（Logging） \u662f\u5b9e\u73b0 \u539f\u5b50\u6027（Atomicity） \u548c \u6301\u4e45\u6027（Durability） \u7684\u6838\u5fc3\u673a\u5236\u3002\u6839\u636e\u8bb0\u5f55\u5185\u5bb9\u7684\u62bd\u8c61\u5c42\u6b21，\u6570\u636e\u5e93\u65e5\u5fd7\u901a\u5e38\u5206\u4e3a\u4e09\u7c7b：
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