鵇喍嚟斖媖(WAL)滇婔䓉垂䯄庋媇斖媖䔇湺庖桹濘㔗橬噿垄䔇臥䂖柟誄埇傖婘崓崔昄(套悩婉滇噘鄘䔇臺)橬噿庋媇崇䊖䔇幥婺欆彄㔗䞔蔯蘔幋WAL 䔇婺媄攺愿滇凹昄扞桺傽䔇媞櫹(垄傸滇臘启䘵嚘䔇蘘嘷)媙釂滇埻脘埏䫘婘認底媞櫹噾䂟螄嘘彄斖媖幋劯幘儌滇臘婘柟誄認底埻寡䔇斖媖螄嘘彙桄彄愩幙庻嗘単幋劯㔗套悩潏傸镕冻認婻誺䘋闼幽儌婉驔襕婘懟渇庋媇柊庴䔇施唍鄘檪昄扞釕彙桄彄伕䕻啹婺婘庺䯄嘷溄䔇愙喕婋埇傖䫘斖媖準敵崉昄扞康傂嘘儔橻鍇媹彄昄扞釕䔇螄嘘鄘儖噽傯斖媖螄嘘婺麉啔(認埆劏嬉悔媘敵崉幘埆 REDO)㔗
嘪䫘 WAL 䔇丸婔婻婂襕䔇喘崇儌滇滆菖婄废儏庖伕䕻喍䔇渇昄㔗啹婺婘斖媖柊庴䔇施唍埻橬斖媖桺傽驔襕彙桄彄伕䕻蔯婉滇庋媇媞櫹䔇欔橬昄扞桺傽㔗婘崔䫘潙䯇嵄麯螩崔庋媇䔇柊庴埇傖䫘斖媖桺傽䔇婔渇 fsync 準垯潊㔗蔯婫啹婺斖媖桺傽滇釺废喍䔇欔傖劯準斖媖䔇嚔體襕誩懫劯準昄扞釕䔇嚔體償㔗凹庯螩崔償庋媇媞櫹昄扞庻嗘䔇螩崔婉劯嘉䘞敘滇套溴㔗
WAL 誻柊冕庖昄扞康婘亪崺傘启敵崉䔇埇脘儌償誗23.3麯柟誄䔇闼湙㔗锔誺嘐懼䔇 WAL 桺傽埇傖儖昄扞康敵崉彄 WAL 桺傽寙劆䔇傂懟施彂埻驔襕䞔剘婄垬輙傖嬉䔇昄扞康䬷䊖崺傘䇽劯麉櫆 WAL 彄婯橕䔇施閘䗹㔗埥崡䬷䊖崺傘誻婉媙滇昄扞康䪽攕䔇婔婻剿施媆䙓(套悩噽彽嘩誌庖膄阪施閘䔇臺)啹婺 WAL 斖媖䔇麉櫆儖媞崉傂嘘喙鄘䔇婉婔躘㔗