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Mysql篇-锟斤拷锟斤拷锟斤拷志

锟斤拷源锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷|锟斤拷时锟戒：2024-11-14 10:17:27 |锟斤拷锟侥讹拷锟斤拷67锟斤拷|锟斤拷锟斤拷签锟斤拷 S 锟斤拷 |锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷 undo log锟斤拷锟截癸拷锟斤拷志锟斤拷锟斤拷锟斤拷 Innodb 锟芥储锟斤拷锟斤拷锟斤拷锟斤拷傻锟斤拷锟街撅拷锟绞碉拷锟斤拷锟斤拷锟斤拷锟斤拷械锟皆拷锟斤拷裕锟斤拷锟揭拷锟斤拷锟斤拷锟斤拷锟截癸拷锟斤拷 MVCC锟斤拷 redo log锟斤拷锟斤拷锟斤拷锟斤拷志锟斤拷锟斤拷锟斤拷 Innodb 锟芥储锟斤拷锟斤拷锟斤拷锟斤拷傻锟斤拷锟街撅拷锟绞碉拷锟斤拷锟斤拷锟斤拷锟斤拷械某志锟斤拷裕锟斤拷锟揭拷锟斤拷诘锟斤拷锟饺癸拷锟较恢革拷锟斤拷 binlog 锟斤拷锟介档锟斤拷志锟斤拷锟斤拷锟斤拷 Server 锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷

undo log锟斤拷锟截癸拷锟斤拷志锟斤拷锟斤拷锟斤拷 Innodb 锟芥储锟斤拷锟斤拷锟斤拷锟斤拷傻锟斤拷锟街撅拷锟绞碉拷锟斤拷锟斤拷锟斤拷锟斤拷械锟� 原锟斤拷锟斤拷 锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷毓锟斤拷锟� MVCC锟斤拷
redo log锟斤拷锟斤拷锟斤拷锟斤拷志锟斤拷锟斤拷锟斤拷 Innodb 锟芥储锟斤拷锟斤拷锟斤拷锟斤拷傻锟斤拷锟街撅拷锟绞碉拷锟斤拷锟斤拷锟斤拷锟斤拷械锟� 锟街撅拷锟斤拷 锟斤拷锟斤拷要锟斤拷锟节碉拷锟斤拷裙锟斤拷匣指锟斤拷锟�
binlog 锟斤拷锟介档锟斤拷志锟斤拷锟斤拷锟斤拷 Server 锟斤拷锟斤拷锟缴碉拷锟斤拷志锟斤拷锟斤拷要锟斤拷锟斤拷锟斤拷锟捷憋拷锟捷猴拷锟斤拷锟接革拷锟狡ｏ拷

锟截癸拷锟斤拷志锟斤拷undo log锟斤拷

锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷之前锟斤拷锟斤拷锟捷碉拷一锟斤拷锟芥本锟斤拷锟斤拷锟斤拷锟斤拷锟节回癸拷锟斤拷锟斤拷锟斤拷原锟斤拷锟斤拷
实锟街讹拷姹撅拷锟斤拷锟斤拷锟斤拷锟斤拷碌亩锟斤拷锟組VCC锟斤拷锟侥关硷拷锟斤拷锟斤拷之一锟斤拷也锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷MVCC通锟斤拷Read View + undolog锟侥版本锟斤拷实锟街ｏ拷锟斤拷锟皆撅拷锟藉看 MVCC锟侥匡拷锟秸讹拷

锟斤拷锟斤拷

锟竭硷拷锟斤拷式锟斤拷锟斤拷志锟斤拷锟斤拷执锟斤拷 undo 锟斤拷时锟津，斤拷锟斤拷锟角斤拷锟斤拷锟捷达拷锟竭硷拷锟较恢革拷锟斤拷锟斤拷锟斤拷之前锟斤拷状态锟斤拷锟斤拷锟斤拷锟角达拷锟斤拷锟斤拷页锟斤拷锟较诧拷锟斤拷实锟街的ｏ拷锟斤拷一锟斤拷锟角诧拷同锟斤拷redo log 锟侥★拷

每锟斤拷 InnoDB 锟斤拷锟斤拷锟揭伙拷锟斤拷锟铰硷拷锟斤拷胁锟斤拷锟斤拷锟斤拷薷摹锟缴撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟揭拷鸦毓锟绞憋拷锟揭拷锟斤拷锟较拷锟斤拷锟铰硷拷锟� undo log 锟斤，锟斤拷锟界：

锟斤拷 锟斤拷锟斤拷insert 一锟斤拷锟斤拷录时锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷录锟斤拷锟斤拷锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷之锟斤拷毓锟绞敝伙拷锟揭拷锟斤拷锟斤拷锟斤拷锟斤拷值锟斤拷应锟斤拷 锟斤拷录删锟斤拷delete 锟酵猴拷锟剿ｏ拷
锟斤拷 删锟斤拷delete 一锟斤拷锟斤拷录时锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷录锟叫碉拷锟斤拷锟捷讹拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷之锟斤拷毓锟绞憋拷侔锟斤拷锟斤拷锟叫╋拷锟斤拷锟斤拷锟缴碉拷 锟斤拷录锟斤拷锟斤拷insert 锟斤拷锟斤拷锟叫就猴拷锟剿ｏ拷
锟斤拷 锟斤拷锟斤拷 一锟斤拷锟斤拷录时锟斤拷要锟窖憋拷锟斤拷锟铰碉拷锟叫的撅拷值锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷之锟斤拷毓锟绞憋拷侔锟斤拷锟叫╋拷锟� 锟斤拷锟斤拷为锟斤拷值 锟酵猴拷锟剿★拷

什么时锟斤拷锟斤拷锟�

锟斤拷锟斤拷始之前 锟斤拷MySQL 锟斤拷锟饺硷拷录锟斤拷锟斤拷前锟斤拷锟斤拷锟捷碉拷 undo log 锟斤拷志锟侥硷拷锟斤拷锟芥，锟斤拷锟斤拷锟斤拷毓锟绞憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟� undo log 锟斤拷锟斤拷锟叫回癸拷锟斤拷同时undo 也锟斤拷锟斤拷锟� redo 锟斤拷锟斤拷证undo log锟侥可匡拷锟皆★拷

Mysql篇-三大日志

什么时锟斤拷刷锟斤拷

undo log 锟斤拷锟斤拷锟斤拷页锟斤拷刷锟教诧拷锟斤拷锟斤拷一锟斤拷锟侥ｏ拷锟斤拷锟斤拷要通锟斤拷 redo log 锟斤拷证锟街久伙拷锟斤拷锟斤拷锟斤拷undo锟斤拷志锟斤拷时锟斤拷同锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷诒锟斤拷锟斤拷锟斤拷锟街久伙拷锟斤拷锟狡碉拷redolog锟侥诧拷锟斤拷锟斤拷

buffer pool 锟斤拷锟斤拷 undo 页锟斤拷锟斤拷 undo 页锟斤拷锟睫革拷也锟斤拷锟斤拷锟铰硷拷锟� redo log锟斤拷redo log 锟斤拷每锟斤拷刷锟教ｏ拷锟结交锟斤拷锟斤拷时也锟斤拷刷锟教ｏ拷锟斤拷锟斤拷页锟斤拷 undo 页锟斤拷锟角匡拷锟斤拷锟斤拷锟斤拷票锟街わ拷志没锟斤拷模锟斤拷锟斤拷蹇达拷锟斤拷锟斤拷锟斤拷荨锟�

锟斤拷锟斤拷锟斤拷志锟斤拷redo log锟斤拷

锟斤拷锟斤拷

确锟斤拷锟斤拷锟斤拷某志锟斤拷浴锟�
- 为锟剿凤拷止锟较电导锟斤拷锟斤拷锟捷讹拷失锟斤拷锟斤拷锟解，锟斤拷锟斤拷一锟斤拷锟斤拷录锟斤拷要锟斤拷锟铰碉拷时锟斤拷InnoDB 锟斤拷锟斤拷突锟斤拷雀锟斤拷锟斤拷诖妫ㄍ憋拷锟斤拷为锟斤拷页锟斤拷锟斤拷然锟襟将憋拷锟轿讹拷锟斤拷锟揭筹拷锟斤拷薷锟斤拷锟� redo log 锟斤拷锟斤拷式锟斤拷录锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟斤拷锟铰撅拷锟斤拷锟斤拷锟斤拷恕锟揭诧拷锟斤拷锟剿碉拷锟� redo log 锟斤拷为锟剿凤拷止 Buffer Pool 锟叫碉拷锟斤拷页锟斤拷失锟斤拷锟斤拷频摹锟�
- 锟斤拷锟斤拷锟斤拷mysql锟斤拷锟斤拷锟绞憋拷颍锟斤拷锟絩edo log锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接讹拷锟斤到锟斤拷锟斤拷某志锟斤拷锟斤拷锟揭伙拷锟斤拷浴锟�
锟斤拷写锟斤拷锟斤拷锟接★拷锟斤拷锟叫达拷锟斤拷锟斤拷锟剿★拷顺锟斤拷写锟斤拷锟斤拷锟斤拷锟斤拷 MySQL 写锟斤拷锟斤拷痰锟斤拷锟斤拷堋锟�

锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷式锟斤拷锟斤拷志锟斤拷锟斤拷录锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷页锟斤拷锟斤拷薷牡锟斤拷锟较拷锟斤拷锟� redo log 锟斤拷顺锟斤拷写锟斤拷redo log file 锟斤拷锟斤拷锟斤拷锟侥硷拷锟斤拷去锟侥★拷同时锟斤拷锟斤拷锟节达拷锟睫革拷 Undo log 锟斤拷也锟斤拷要锟斤拷录undo log锟斤拷应锟斤拷 redo log锟斤拷

redo log 锟斤拷 undo log 锟斤拷锟斤拷:

redo log 锟斤拷录锟剿此达拷锟斤拷锟斤拷 锟斤拷珊锟� 锟斤拷锟斤拷锟斤拷状态锟斤拷锟斤拷录锟斤拷锟角革拷锟斤拷之锟斤拷锟街碉拷锟�
undo log 锟斤拷录锟剿此达拷锟斤拷锟斤拷 锟斤拷始前 锟斤拷锟斤拷锟斤拷状态锟斤拷锟斤拷录锟斤拷锟角革拷锟斤拷之前锟斤拷值锟斤拷

什么时锟斤拷锟斤拷锟�

锟斤拷锟斤拷始之锟斤拷筒锟斤拷锟絩edo log锟斤拷redo log锟斤拷锟斤拷锟教诧拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷峤伙拷锟叫达拷锟侥ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街达拷泄锟斤拷锟斤拷校锟斤拷憧夹达拷锟絩edo log锟侥硷拷锟叫★拷

锟斤拷锟斤拷锟结交之前锟斤拷锟斤拷锟剿憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵拷锟� undo log 锟截癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟结交之锟斤拷锟斤拷锟剿憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵拷锟� redo log 锟街革拷锟斤拷锟斤拷锟斤拷锟斤拷图锟斤拷
Mysql篇-三大日志

redo log 要写锟斤拷锟斤拷锟教ｏ拷锟斤拷锟斤拷也要写锟斤拷锟教ｏ拷为什么要锟斤拷锟揭伙拷伲锟�

写锟斤拷 redo log 锟侥凤拷式使锟斤拷锟斤拷追锟接诧拷锟斤拷锟斤拷锟斤拷锟皆达拷锟教诧拷锟斤拷锟斤拷顺锟斤拷写锟斤拷锟斤拷写锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟揭碉拷写锟斤拷位锟矫ｏ拷然锟斤拷锟叫达拷锟斤拷锟斤拷蹋锟斤拷锟斤拷源锟斤拷滩锟斤拷锟斤拷锟斤拷锟斤拷写锟斤拷锟斤拷锟教的★拷顺锟斤拷写锟斤拷锟饺★拷锟斤拷锟叫达拷锟� 锟斤拷效锟侥多，锟斤拷锟� redo log 写锟斤拷锟斤拷痰目锟斤拷锟斤拷锟叫★拷锟�

什么时锟斤拷刷锟斤拷

实锟斤拷锟较ｏ拷执锟斤拷一锟斤拷锟斤拷锟斤拷墓锟斤拷锟斤拷校锟斤拷锟斤拷锟斤拷锟� redo log 也锟斤拷锟斤拷直锟斤拷写锟斤拷锟斤拷痰模锟斤拷锟轿拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 I/O 锟斤拷锟斤拷锟斤拷锟斤拷锟揭达拷锟教碉拷锟斤拷锟斤拷锟劫讹拷远锟斤拷锟斤拷锟节存。

redo log锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷 Innodb_log_buffer锟斤拷Innodb_log_buffer 锟斤拷默锟较达拷小为 16M锟斤拷每锟斤拷锟斤拷锟斤拷一锟斤拷 redo log 时锟斤拷锟斤拷锟斤拷写锟诫到 redo log buffer锟斤拷锟斤拷锟斤拷锟劫持久伙拷锟斤拷锟斤拷锟教★拷

Mysql篇-三大日志

然锟斤拷锟酵拷锟斤拷锟斤拷锟斤拷锟斤拷址锟绞斤拷锟絠nnodb log buffer锟斤拷锟斤拷志刷锟铰碉拷锟斤拷锟斤拷:

MySQL 锟斤拷锟斤拷锟截憋拷时锟斤拷
锟斤拷 redo log buffer 锟叫硷拷录锟斤拷写锟斤拷锟斤拷锟斤拷锟斤拷 redo log buffer 锟节达拷占锟斤拷一锟斤拷时锟斤拷锟结触锟斤拷锟斤拷锟教ｏ拷
InnoDB 锟侥猴拷台锟竭筹拷每锟斤拷 1 锟诫，锟斤拷 redo log buffer 锟街久伙拷锟斤拷锟斤拷锟教★拷
每锟斤拷锟斤拷锟斤拷锟结交时锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 redo log buffer 锟斤拷锟� redo log 直锟接持久伙拷锟斤拷锟斤拷锟教★拷

锟斤拷锟絩edo log buffer锟斤拷写锟教ｏ拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷峤伙拷锟叫达拷锟絩edo log锟侥硷拷锟侥ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷目锟绞硷拷锟斤拷鸩娇锟绞硷拷摹锟�

锟斤拷使某锟斤拷锟斤拷锟斤拷没锟斤拷锟结交锟斤拷Innodb锟芥储锟斤拷锟斤拷锟斤拷然每锟斤拷峤玶edo log buffer刷锟铰碉拷redo log锟侥硷拷锟斤拷

锟斤拷一锟斤拷锟角憋拷锟斤拷要知锟斤拷锟侥ｏ拷锟斤拷为锟斤拷锟斤拷院芎玫亟锟斤拷锟斤拷俅锟斤拷锟斤拷锟斤拷锟斤拷峤伙拷锟絚ommit锟斤拷锟斤拷时锟斤拷也锟角很讹拷锟捷的★拷

redolog锟斤拷锟侥硷拷

锟斤拷锟斤拷 redo 锟斤拷志锟斤拷锟侥硷拷锟斤拷锟斤拷锟斤拷ib_logfile0 锟斤拷 ib_logfile1锟斤拷

redo log锟侥硷拷锟斤拷锟斤拷锟斤拷循锟斤拷写锟侥凤拷式锟斤拷锟斤拷锟侥ｏ拷 InnoDB 锟芥储锟斤拷锟斤拷锟斤拷锟叫� ib_logfile0 锟侥硷拷锟斤拷锟斤拷 ib_logfile0 锟侥硷拷锟斤拷写锟斤拷锟斤拷时锟津，伙拷锟叫伙拷锟斤拷 ib_logfile1 锟侥硷拷锟斤拷锟斤拷 ib_logfile1 锟侥硷拷也锟斤拷写锟斤拷时锟斤拷锟斤拷锟叫伙拷锟斤拷 ib_logfile0 锟侥硷拷锟斤拷锟洁当锟斤拷一锟斤拷锟斤拷锟轿★拷

Mysql篇-三大日志

write pos 锟斤拷 checkpoint 锟斤拷锟狡讹拷锟斤拷锟斤拷顺时锟诫方锟斤拷
write pos 锟斤拷 checkpoint 之锟斤拷牟锟斤拷郑锟酵硷拷械暮锟缴拷锟斤拷郑锟斤拷锟斤拷锟斤拷锟斤拷锟铰硷拷碌母锟斤拷虏锟斤拷锟斤拷锟�
check point 锟斤拷 write pos 之锟斤拷牟锟斤拷郑锟酵硷拷锟斤拷锟缴拷锟斤拷郑锟斤拷锟斤拷锟斤拷锟斤拷痰锟斤拷锟斤拷锟斤拷锟揭筹拷锟铰硷拷锟�

锟斤拷耍锟斤拷锟斤拷 write pos 追锟斤拷锟斤拷 checkpoint锟斤拷锟斤拷锟斤拷味锟斤拷 redo log 锟侥硷拷锟斤拷锟剿ｏ拷锟斤拷时 MySQL 锟斤拷锟斤拷锟斤拷执锟斤拷锟铰的革拷锟铰诧拷锟斤拷锟斤拷也锟斤拷锟斤拷说 MySQL 锟结被锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷志锟斤拷binlog锟斤拷

锟斤拷锟斤拷

锟斤拷锟节革拷锟狡ｏ拷锟斤拷锟斤拷锟接革拷锟斤拷锟叫ｏ拷锟接匡拷锟斤拷锟斤拷锟斤拷锟斤拷锟较碉拷binlog锟斤拷锟斤拷锟截放ｏ拷实锟斤拷锟斤拷锟斤拷同锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟捷匡拷幕锟斤拷锟绞憋拷锟斤拷幕锟皆拷锟斤拷锟斤拷锟斤拷莼指锟�

锟斤拷锟斤拷

binlog 锟斤拷 3 锟街革拷式锟斤拷锟酵ｏ拷锟街憋拷锟斤拷 STATEMENT锟斤拷默锟较革拷式锟斤拷锟斤拷ROW锟斤拷 MIXED锟斤拷锟斤拷锟斤拷锟斤拷锟铰ｏ拷

STATEMENT锟斤拷每一锟斤拷锟睫革拷锟斤拷锟捷碉拷 SQL 锟斤拷锟结被锟斤拷录锟斤拷 binlog 锟叫ｏ拷锟洁当锟节硷拷录锟斤拷锟竭硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷指锟绞斤拷锟� binlog 锟斤拷锟皆筹拷为锟竭硷拷锟斤拷志锟斤拷锟斤拷锟斤拷锟接革拷锟斤拷锟斤拷 slave 锟斤拷锟劫革拷锟斤拷 SQL 锟斤拷锟斤拷锟斤拷帧锟斤拷锟� STATEMENT 锟叫讹拷态锟斤拷锟斤拷锟斤拷锟斤拷锟解，锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 uuid 锟斤拷锟斤拷 now 锟斤拷些锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷执锟叫的斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷诖涌锟街达拷械慕锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟节憋拷暮锟斤拷锟斤拷岬硷拷赂锟斤拷频锟斤拷锟斤拷莶锟揭伙拷拢锟�
ROW锟斤拷锟斤拷录锟斤拷锟斤拷锟斤拷锟斤拷锟秸憋拷锟睫改筹拷什么锟斤拷锟剿ｏ拷锟斤拷锟街革拷式锟斤拷锟斤拷志锟斤拷锟酵诧拷锟杰筹拷为锟竭硷拷锟斤拷志锟剿ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟� STATEMENT 锟铰讹拷态锟斤拷锟斤拷锟斤拷锟斤拷锟解。锟斤拷 ROW 锟斤拷缺锟斤拷锟斤拷每锟斤拷锟斤拷锟捷的变化锟斤拷锟斤拷锟斤拷岜伙拷锟铰硷拷锟斤拷锟斤拷锟街达拷锟斤拷锟斤拷锟� update 锟斤拷洌拷锟斤拷露锟斤拷锟斤拷锟斤拷锟斤拷菥突锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷录锟斤拷使 binlog 锟侥硷拷锟斤拷锟襟，讹拷锟斤拷 STATEMENT 锟斤拷式锟斤拷只锟斤拷锟铰家伙拷锟� update 锟斤拷锟斤拷锟窖ｏ拷
MIXED锟斤拷锟斤拷锟斤拷锟斤拷 STATEMENT 锟斤拷 ROW 模式锟斤拷锟斤拷锟斤拷锟斤拷莶锟酵拷锟斤拷锟斤拷锟皆讹拷使锟斤拷 ROW 模式锟斤拷 STATEMENT 模式锟斤拷

注锟解：锟斤拷同锟斤拷锟斤拷志锟斤拷锟斤拷锟斤拷锟斤拷锟接革拷锟斤拷锟铰筹拷锟斤拷锟叫讹拷态锟斤拷锟斤拷锟斤拷锟斤拷锟解，同锟斤拷锟皆对革拷锟斤拷时锟斤拷也锟斤拷影锟届。一锟斤拷锟斤拷说锟斤拷锟斤拷锟捷匡拷锟叫碉拷update_time锟斤拷锟斤拷锟斤拷锟矫筹拷ON UPDATE CURRENT_TIMESTAMP锟斤拷锟斤拷锟皆讹拷锟斤拷锟斤拷时锟斤拷锟斤拷小锟斤拷锟斤拷锟斤拷痈锟斤拷锟斤拷拢锟�
锟斤拷锟斤拷锟街撅拷锟绞斤拷锟斤拷锟斤拷锟絊TATEMENT锟斤拷锟斤拷锟节硷拷录锟斤拷锟斤拷sql锟斤拷洌拷锟絪alve锟斤拷锟角斤拷锟斤拷锟斤拷锟斤拷胤牛锟斤拷锟矫达拷锟斤拷锟绞憋拷锟揭诧拷锟斤拷胤锟绞憋拷锟绞憋拷洌拷锟绞眘lave锟斤拷锟斤拷时锟斤拷锟接迟碉拷锟斤拷锟解；
锟斤拷锟斤拷锟街撅拷锟绞斤拷锟斤拷锟斤拷锟絉OW锟斤拷锟斤拷锟角硷拷录锟斤拷锟斤拷锟斤拷锟斤拷锟秸憋拷锟睫改筹拷什么锟斤拷锟剿ｏ拷锟斤拷锟街从匡拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺伙拷碌摹锟�

什么时锟斤拷锟斤拷锟�

锟斤拷锟斤拷 锟结交锟斤拷时锟斤拷 锟斤拷一锟斤拷锟皆斤拷锟斤拷锟斤拷锟叫碉拷sql锟斤拷洌ㄒ伙拷锟斤拷锟斤拷锟斤拷锟杰讹拷应锟斤拷锟絪ql锟斤拷洌╋拷锟斤拷锟揭伙拷锟斤拷母锟绞斤拷锟铰硷拷锟絙inlog锟叫★拷

binlog 锟侥硷拷锟角硷拷录锟斤拷锟斤拷锟斤拷锟斤拷锟捷匡拷锟斤拷峁癸拷锟斤拷锟酵憋拷锟斤拷锟斤拷锟睫改碉拷锟斤拷志锟斤拷锟斤拷锟斤拷锟铰硷拷锟窖拷锟侥诧拷锟斤拷锟斤拷锟斤拷锟斤拷 SELECT 锟斤拷 SHOW 锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷redo log锟斤拷锟斤拷锟皆的诧拷锟斤拷锟斤拷锟絙inlog 锟斤拷追锟斤拷写锟斤拷写锟斤拷一锟斤拷锟侥硷拷锟斤拷锟酵达拷锟斤拷一锟斤拷锟铰碉拷锟侥硷拷锟斤拷锟斤拷写锟斤拷锟斤拷锟结覆锟斤拷锟斤拷前锟斤拷锟斤拷志锟斤拷锟斤拷锟斤拷锟斤拷锟饺拷锟斤拷锟斤拷锟街撅拷锟絩edo log 锟斤拷循锟斤拷写锟斤拷锟斤拷志锟秸硷拷锟叫★拷枪潭锟斤拷锟饺拷锟叫达拷锟斤拷痛锟酵凤拷锟绞硷拷锟斤拷锟斤拷锟轿达拷锟剿拷锟斤拷锟教碉拷锟斤拷页锟斤拷志锟斤拷

也锟斤拷锟斤拷说锟斤拷锟斤拷锟斤拷锟叫★拷锟斤拷锟斤拷锟斤拷锟斤拷菘锟斤拷锟斤拷锟捷憋拷删锟斤拷锟剿ｏ拷只锟斤拷使锟斤拷 bin log 锟侥硷拷锟街革拷锟斤拷锟捷★拷锟斤拷为redo log循锟斤拷写锟斤拷锟斤拷锟斤拷锟斤拷荨锟�

锟斤拷锟接革拷锟狡碉拷实锟斤拷

MySQL 锟斤拷锟斤拷锟接革拷锟斤拷锟斤拷锟斤拷锟斤拷 binlog 锟斤拷也锟斤拷锟角硷拷录 MySQL 锟较碉拷锟斤拷锟叫变化锟斤拷锟皆讹拷锟斤拷锟斤拷锟斤拷式锟斤拷锟斤拷锟节达拷锟斤拷锟较★拷锟斤拷锟狡的癸拷锟教撅拷锟角斤拷 binlog 锟叫碉拷锟斤拷锟捷达拷锟斤拷锟解传锟戒到锟接匡拷锟较★拷

锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷觳斤拷模锟揭诧拷锟斤拷锟斤拷锟斤拷锟斤拷锟街达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟竭程诧拷锟斤拷却锟斤拷锟斤拷锟� binlog 锟斤拷锟竭筹拷同锟斤拷锟斤拷伞锟�
Mysql篇-三大日志

MySQL 锟斤拷群锟斤拷锟斤拷锟接革拷锟狡癸拷锟斤拷锟斤拷锟铰ｏ拷

写锟斤拷 Binlog锟斤拷MySQL 锟斤拷锟斤拷锟斤拷锟秸碉拷锟酵伙拷锟斤拷锟结交锟斤拷锟斤拷锟斤拷锟斤拷锟街拷螅锟斤拷锟叫达拷锟� binlog锟斤拷锟斤拷锟结交锟斤拷锟今，革拷锟铰存储锟斤拷锟斤拷锟叫碉拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷锟结交锟斤拷珊螅锟斤拷馗锟斤拷突锟斤拷恕锟斤拷锟斤拷锟斤拷晒锟斤拷锟斤拷锟斤拷锟接︼拷锟�
同锟斤拷 Binlog锟斤拷锟接匡拷岽达拷锟揭伙拷锟阶拷诺锟� I/O 锟竭程ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟� log dump 锟竭程ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟� binlog 锟斤拷志锟斤拷锟劫帮拷 binlog 锟斤拷息写锟斤拷 relay log 锟斤拷锟叫硷拷锟斤拷志锟斤，锟劫凤拷锟截革拷锟斤拷锟解“锟斤拷锟狡成癸拷锟斤拷锟斤拷锟斤拷应锟斤拷
锟截凤拷 Binlog锟斤拷锟接匡拷岽达拷锟揭伙拷锟斤拷锟斤拷诨胤锟� binlog 锟斤拷锟竭程ｏ拷去锟斤拷 relay log 锟叫硷拷锟斤拷志锟斤拷然锟斤拷胤锟� binlog 锟斤拷锟铰存储锟斤拷锟斤拷锟叫碉拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷实锟斤拷锟斤拷锟接碉拷锟斤拷锟斤拷一锟斤拷锟皆★拷

什么时锟斤拷刷锟斤拷

锟斤拷刷锟斤拷时锟斤拷锟斤拷锟斤拷redolog锟斤拷一锟斤拷锟斤拷redolog锟斤拷使锟斤拷锟斤拷没锟结交锟斤拷也锟斤拷锟斤拷每锟斤拷1锟斤拷锟剿拷獭锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷 binlog 锟角诧拷锟杰憋拷锟金开的ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫讹拷螅ū锟斤拷锟斤拷泻芏锟斤拷锟斤拷锟戒）锟斤拷也要锟斤拷证一锟斤拷锟斤拷写锟诫。锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷 binlog 锟斤拷锟金开碉拷时锟斤拷锟节憋拷锟斤拷执锟叫就会被锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街讹拷锟斤拷锟叫ｏ拷锟斤拷锟斤拷锟斤拷锟狡伙拷锟斤拷原锟斤拷锟皆ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷摹锟�

bin log锟斤拷志锟斤拷redo log锟斤拷锟狡ｏ拷也锟叫讹拷应锟侥伙拷锟芥，锟斤拷 binlog cache锟斤拷锟斤拷锟斤拷锟结交锟斤拷时锟斤拷锟劫帮拷 binlog cache 写锟斤拷 binlog 锟侥硷拷锟叫★拷
Mysql篇-三大日志

图锟叫碉拷 write锟斤拷指锟侥撅拷锟斤拷指锟斤拷锟斤拷志写锟诫到 binlog 锟侥硷拷锟斤拷锟斤拷锟角诧拷没锟叫帮拷锟斤拷锟捷持久伙拷锟斤拷锟斤拷锟教ｏ拷锟斤拷为锟斤拷锟捷伙拷锟斤拷锟斤拷锟斤拷锟侥硷拷系统锟斤拷 page cache 锟斤，write 锟斤拷写锟斤拷锟劫度伙拷锟角比较匡拷模锟斤拷锟轿拷锟斤拷婕帮拷锟斤拷锟� I/O锟斤拷
图锟叫碉拷 fsync锟斤拷锟斤拷锟角斤拷锟斤拷锟捷持久伙拷锟斤拷锟斤拷锟教的诧拷锟斤拷锟斤拷锟斤拷锟斤拷突锟斤拷婕帮拷锟斤拷锟� I/O锟斤拷锟斤拷锟斤拷频锟斤拷锟斤拷 fsync 锟结导锟铰达拷锟教碉拷 I/O 锟斤拷锟竭★拷

MySQL锟结供一锟斤拷 sync_binlog 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟捷匡拷锟� binlog 刷锟斤拷锟斤拷锟斤拷锟较碉拷频锟绞ｏ拷

sync_binlog = 0 锟斤拷时锟津，憋拷示每锟斤拷锟结交锟斤拷锟斤拷只 write锟斤拷锟斤拷 fsync锟斤拷锟斤拷锟斤拷锟斤拷锟缴诧拷锟斤拷系统锟斤拷锟斤拷锟斤拷时锟斤拷锟斤拷锟捷持久伙拷锟斤拷锟斤拷锟教ｏ拷
sync_binlog = 1 锟斤拷时锟津，憋拷示每锟斤拷锟结交锟斤拷锟今都伙拷 write锟斤拷然锟斤拷锟斤拷锟斤拷执锟斤拷 fsync锟斤拷
sync_binlog =N(N>1) 锟斤拷时锟津，憋拷示每锟斤拷锟结交锟斤拷锟斤拷 write锟斤拷锟斤拷锟桔伙拷 N 锟斤拷锟斤拷锟斤拷锟斤拷 fsync锟斤拷

锟斤拷然锟斤拷锟斤拷MySQL锟斤拷系统默锟较碉拷锟斤拷锟斤拷锟斤拷 sync_binlog = 0锟斤拷也锟斤拷锟角诧拷锟斤拷锟轿猴拷强锟斤拷锟皆的达拷锟斤拷刷锟斤拷指锟筋，锟斤拷时锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫的ｏ拷锟斤拷锟角凤拷锟斤拷也锟斤拷锟斤拷锟侥★拷锟斤拷为一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟届常锟斤拷锟斤拷锟斤拷锟斤拷没锟街久伙拷锟斤拷锟斤拷锟教碉拷锟斤拷锟捷就会丢失锟斤拷

锟斤拷锟斤拷 sync_binlog 锟斤拷锟斤拷为 1 锟斤拷时锟斤拷锟斤拷锟筋安全锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷谩锟斤拷锟轿拷锟斤拷锟斤拷锟轿� 1 锟斤拷时锟津，硷拷使锟斤拷锟斤拷锟斤拷锟斤拷锟届常锟斤拷锟斤拷锟斤拷锟斤拷喽б伙拷锟斤拷锟斤拷锟斤拷 binlog锟斤拷锟斤拷锟窖撅拷锟街久伙拷锟斤拷锟斤拷锟教碉拷锟斤拷锟捷就诧拷锟斤拷锟斤拷影锟届，锟斤拷锟斤拷锟斤拷锟角讹拷写锟斤拷锟斤拷锟斤拷影锟斤拷太锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 binlog 锟斤拷志锟斤拷失锟侥凤拷锟秸ｏ拷为锟斤拷锟斤拷锟叫达拷锟斤拷锟斤拷锟杰ｏ拷一锟斤拷锟� sync_binlog 锟斤拷锟斤拷为 100~1000 锟叫碉拷某锟斤拷锟斤拷值锟斤拷

锟斤拷锟阶讹拷锟结交

锟斤拷锟斤拷锟结交锟斤拷redo log 锟斤拷 binlog 锟斤拷要锟街久伙拷锟斤拷锟斤拷锟教ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟角讹拷锟斤拷锟斤拷锟竭硷拷锟斤拷锟斤拷锟杰筹拷锟街帮拷晒锟斤拷锟阶刺拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷志之锟斤拷锟斤拷呒锟斤拷锟揭伙拷隆锟斤拷锟斤拷拢锟�

锟斤拷锟斤拷诮锟� redo log 刷锟诫到锟斤拷锟斤拷之锟斤拷 MySQL 突然宕伙拷锟剿ｏ拷锟斤拷 binlog 锟斤拷没锟斤拷锟斤拷锟矫硷拷写锟诫。锟斤拷么锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷台锟斤拷锟斤拷锟斤拷通锟斤拷redo log锟街革拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟絙inlog锟斤拷没锟叫硷拷录锟斤拷锟斤拷锟捷ｏ拷锟斤拷锟斤拷锟斤拷锟叫伙拷锟斤拷锟斤拷锟捷碉拷时锟津，就会丢失锟斤拷一锟斤拷锟斤拷锟捷ｏ拷同时锟斤拷锟斤拷同锟斤拷也锟结丢失锟斤拷一锟斤拷锟斤拷锟捷★拷
锟斤拷锟斤拷诮锟� binlog 刷锟诫到锟斤拷锟斤拷之锟斤拷 MySQL 突然宕伙拷锟剿ｏ拷锟斤拷 redo log 锟斤拷没锟斤拷锟斤拷锟矫硷拷写锟诫。锟斤拷锟斤拷 redo log 锟斤拷没写锟斤拷锟斤拷锟斤拷锟街革拷锟皆猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫э拷锟斤拷锟� binlog 锟斤拷锟斤拷锟铰硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟戒，锟斤拷锟斤拷锟接架癸拷锟叫ｏ拷binlog 锟结被锟斤拷锟狡碉拷锟接库，锟接匡拷执锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷洌拷锟矫达拷锟斤拷锟斤拷锟斤拷锟斤拷值锟斤拷一锟斤拷锟皆ｏ拷

锟斤拷锟阶讹拷锟结交锟窖碉拷锟斤拷锟斤拷锟斤拷锟斤拷峤伙拷锟街筹拷锟斤拷 2 锟斤拷锟阶段ｏ拷锟街憋拷锟角★拷准锟斤拷锟斤拷Prepare锟斤拷锟阶段★拷锟酵★拷锟结交锟斤拷Commit锟斤拷锟阶段★拷

锟斤拷锟斤拷锟斤拷锟�

Mysql篇-三大日志
锟斤拷锟斤拷锟斤拷峤伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锥危锟斤拷锟斤拷墙锟� redo log 锟斤拷写锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟借：prepare 锟斤拷 commit锟斤拷锟叫硷拷锟劫达拷锟斤拷写锟斤拷binlog锟斤拷锟斤拷锟斤拷锟斤拷锟铰ｏ拷

prepare 锟阶段ｏ拷锟斤拷 XID锟斤拷锟节诧拷 XA 锟斤拷锟斤拷锟� ID锟斤拷写锟诫到 redo log锟斤拷同时锟斤拷 redo log 锟斤拷应锟斤拷锟斤拷锟斤拷状态锟斤拷锟斤拷为 prepare锟斤拷然锟斤拷 redo log 锟街久伙拷锟斤拷锟斤拷锟教ｏ拷innodb_flush_log_at_trx_commit = 1 锟斤拷锟斤拷锟矫ｏ拷锟斤拷
commit 锟阶段ｏ拷锟斤拷 XID 写锟诫到 binlog锟斤拷然锟斤拷 binlog 锟街久伙拷锟斤拷锟斤拷锟教ｏ拷sync_binlog = 1 锟斤拷锟斤拷锟矫ｏ拷锟斤拷锟斤拷锟脚碉拷锟斤拷锟斤拷锟斤拷锟斤拷峤伙拷锟斤拷锟接口ｏ拷锟斤拷 redo log 状态锟斤拷锟斤拷为 commit锟斤拷锟斤拷时锟斤拷状态锟斤拷锟斤拷锟斤拷要锟街久伙拷锟斤拷锟斤拷锟教ｏ拷只锟斤拷要 write 锟斤拷锟侥硷拷系统锟斤拷 page cache 锟叫就癸拷锟剿ｏ拷锟斤拷为只要 binlog 写锟斤拷锟教成癸拷锟斤拷锟斤拷锟斤拷 redo log 锟斤拷状态锟斤拷锟斤拷 prepare 也没锟叫癸拷系锟斤拷一锟斤拷锟结被锟斤拷为锟斤拷锟斤拷锟窖撅拷执锟叫成癸拷锟斤拷

锟杰碉拷锟斤拷说锟斤拷锟角ｏ拷锟斤拷锟斤拷锟结交锟斤拷redo log锟斤拷锟絧repare 锟阶段ｏ拷锟斤拷写锟斤拷binlog锟斤拷锟斤拷锟截成癸拷锟斤拷redo log 锟斤拷锟斤拷commit 锟阶段★拷

锟杰斤拷锟斤拷锟斤拷锟斤拷志锟侥撅拷锟斤拷锟斤拷锟斤拷

锟斤拷锟脚伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟缴憋拷锟斤拷小锟斤拷执锟叫计伙拷锟斤拷执锟斤拷锟斤拷锟酵帮拷锟斤拷执锟叫计伙拷锟斤拷始锟斤拷锟叫革拷锟铰诧拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟铰� UPDATE t_user SET name = 'xiaolin' WHERE id = 1; 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷:

锟斤拷锟斤拷诓锟斤拷锟絙uffer Pool锟斤拷执锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟街达拷校锟斤拷锟斤拷锟矫存储锟斤拷锟斤拷慕涌冢锟酵拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺� id = 1 锟斤拷一锟叫硷拷录锟斤拷
- 锟斤拷锟� id=1 锟斤拷一锟斤拷锟斤拷锟节碉拷锟斤拷锟斤拷页锟斤拷锟斤拷锟斤拷锟斤拷 buffer pool 锟叫ｏ拷锟斤拷直锟接凤拷锟截革拷执锟斤拷锟斤拷锟斤拷锟铰ｏ拷
- 锟斤拷锟斤拷锟铰硷拷锟斤拷锟� buffer pool锟斤拷锟斤拷锟斤拷锟斤拷页锟接达拷锟教讹拷锟诫到 buffer pool锟斤拷锟斤拷锟截硷拷录锟斤拷执锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷欠锟斤拷丫锟斤拷锟揭拷锟斤拷碌锟街碉拷锟街达拷锟斤拷锟斤拷玫锟斤拷鄞锟斤拷锟斤拷锟斤拷锟铰硷拷螅峥匆伙拷赂锟斤拷锟角帮拷募锟铰硷拷透锟斤拷潞锟侥硷拷录锟角凤拷一锟斤拷锟斤拷
- 锟斤拷锟揭伙拷锟斤拷幕锟斤拷筒锟斤拷锟斤拷泻锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷蹋锟�
- 锟斤拷锟斤拷锟揭伙拷锟斤拷幕锟斤拷桶迅锟斤拷锟角帮拷募锟铰硷拷透锟斤拷潞锟侥硷拷录锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 InnoDB 锟姐，锟斤拷 InnoDB 锟斤拷锟斤拷锟斤拷执锟叫革拷锟铰硷拷录锟侥诧拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟今，硷拷录undo log锟斤拷锟斤拷锟斤拷录锟睫革拷undo log锟斤拷应锟斤拷redo log锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 InnoDB 锟斤拷锟斤拷录锟铰记帮拷锟斤拷锟斤拷锟揭拷锟铰硷拷锟接︼拷锟� undo log锟斤拷锟斤拷为锟斤拷锟角革拷锟铰诧拷锟斤拷锟斤拷锟斤拷要锟窖憋拷锟斤拷锟铰碉拷锟叫的撅拷值锟斤拷锟斤拷锟斤拷锟斤拷也锟斤拷锟斤拷要锟斤拷锟斤拷一锟斤拷 undo log锟斤拷undo log 锟斤拷写锟斤拷 Buffer Pool 锟叫碉拷 Undo 页锟芥，锟斤拷锟斤拷锟斤拷锟节达拷锟睫改革拷 Undo 页锟斤拷锟斤拷锟揭拷锟铰硷拷锟接︼拷锟� redo log锟斤拷
锟斤拷锟轿拷锟揭筹拷锟斤拷锟叫达拷锟絩edo log锟斤拷InnoDB 锟姐开始锟斤拷锟铰硷拷录锟斤拷锟斤拷锟饺革拷锟斤拷锟节存（同时锟斤拷锟轿拷锟揭筹拷锟斤拷锟饺伙拷蠼锟铰夹达拷锟� redo log 锟斤拷锟芥，锟斤拷锟绞憋拷锟斤拷锟铰撅拷锟斤拷锟斤拷锟斤拷恕锟轿拷思锟斤拷俅锟斤拷锟絀/O锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷页写锟斤拷锟斤拷蹋锟斤拷锟斤拷锟斤拷珊锟教拷叱锟窖★拷锟揭伙拷锟斤拷锟斤拷实锟绞憋拷锟斤拷锟斤拷锟揭承达拷氲斤拷锟斤拷獭锟斤拷锟斤拷锟斤拷 WAL 锟斤拷锟斤拷锟斤拷MySQL 锟斤拷写锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷写锟斤拷锟斤拷锟斤拷锟较ｏ拷锟斤拷锟斤拷锟斤拷写 redo 锟斤拷志锟斤拷然锟斤拷锟节猴拷锟绞碉拷时锟斤拷锟劫斤拷锟睫改碉拷锟斤拷锟斤拷锟斤拷写锟斤拷锟斤拷锟斤拷锟较★拷
锟斤拷锟剿ｏ拷一锟斤拷锟斤拷录锟斤拷锟斤拷锟斤拷锟剿★拷
锟斤拷录binlog锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟街达拷锟斤拷锟缴猴拷然锟斤拷始锟斤拷录锟斤拷锟斤拷锟斤拷应锟斤拷 binlog锟斤拷锟斤拷时锟斤拷录锟斤拷 binlog 锟结被锟斤拷锟芥到 binlog cache锟斤拷锟斤拷没锟斤拷刷锟铰碉拷硬锟斤拷锟较碉拷 binlog 锟侥硷拷锟斤拷锟斤拷锟斤拷锟斤拷锟结交时锟脚伙拷统一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫癸拷锟斤拷锟叫碉拷锟斤拷锟斤拷 binlog 刷锟铰碉拷硬锟教★拷
锟斤拷锟斤拷锟结交锟斤拷redo log锟斤拷binlog刷锟教★拷

锟斤拷锟斤拷锟斤拷专锟斤拷

Java锟斤拷锟斤拷锟斤拷专锟斤拷锟斤拷锟斤拷锟竭ｏ拷锟斤拷迎锟斤拷锟绞★拷

锟斤拷锟斤拷悴恢拷锟斤拷锟斤拷锟斤拷锟矫葱达拷锟斤拷锟斤拷锟斤拷锟侥匡拷锟街拷锟斤拷锟矫达拷锟阶帮拷锟�
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫╋拷锟斤拷锟斤拷悴恢拷锟斤拷貌锟斤拷锟叫达拷锟饺ワ拷锟�
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锟斤拷么锟斤拷锟斤拷私锟斤拷锟揭ｏ拷锟揭会尽锟斤拷锟斤拷锟杰帮拷锟斤拷锟姐。

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锟斤拷锟斤拷

锟截癸拷锟斤拷志锟斤拷undo log锟斤拷

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锟斤拷锟斤拷锟斤拷锟�

锟杰斤拷锟斤拷锟斤拷锟斤拷志锟侥撅拷锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟斤拷专锟斤拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥斤拷为锟斤拷锟斤拷锟斤拷息锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷同锟斤拷锟睫观碉拷锟街な碉拷锟斤拷锟斤拷锟斤拷锟�

锟斤拷锟斤拷锟狡碉拷锟斤拷锟�

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