Dirty read : thread one writes data ; thread two reads what thread one wrote 線程1寫入了數(shù)據,線程2讀取了線程1所寫入的數(shù)據。
Thread one tries on = keyword & keyword = to " > to re - read on = keyword & keyword = the " > the data but it has changed 線程1更改了數(shù)據,最后線程2讀取的是沒有更新的舊數(shù)據。
Thread one on = keyword & keyword = the " > then overwrites on = keyword & keyword = the " > the data , thus leaving thread two with old data 線程1更改了數(shù)據,最后線程2讀取的是沒有更新的舊數(shù)據。
Unrepeatable read : thread one reads data ; the data is then overwritten by thread two . thread one tries to re - read the data but it has changed 線程1讀去了數(shù)據;但是此數(shù)據接著被線程2修改了。線程1試圖從新讀取數(shù)據,但是數(shù)據已經被修改了。
thread: n. 1.線;細絲;〔英國〕麻紗,〔美國〕棉紗;纖維。 ...one: Once one is one. 一乘一等于 ...have not a dry thread on one: 渾身濕透one end thread: 一端帶螺紋one end thread (oet): 一端帶螺紋one narrow thread: 一根細弦thread one’s way through: 小心地擠過a thread: 一根線thread: n. 1.線;細絲;〔英國〕麻紗,〔美國〕棉紗;纖維。 2.細線,細流,細礦脈。 3.(議論等的)思路,條理,線索,情節(jié);【計算機】(公告板上討論的)話題,題材。 4.螺齒,螺絲。 5.〔pl.〕〔美國〕衣服。 a piece of thread 一根線。 a thread of light 細細的一線亮光。 the thread of one's argument 爭辦的頭緒。 be worn to a thread (衣服由于長久地穿著)磨得快要破爛。gather up the threads 綜合(分別處理的問題、部分等)。 hang by [(up)on] a thread 朝不保夕;千鈞一發(fā)。 have not a dry thread on one 渾身濕透。 resume [pick up, take up] the thread of a story (回到正題)言歸正傳。 thread and thrum (好好歹歹)掃數(shù),盡都,全都。 thread of life 生命線,命脈,生命。 vt. 1.穿線(入針眼等);拿線穿(珠粒等)。 2.為照相機裝膠片。 3.穿過,擠過。 4.車螺紋。 thread a camera 為照相機裝膠片。 thread a needle 穿針。 thread one's way through the crowd 穿過人叢。 a threaded mandrel 【機械工程】螺紋心軸。 vi. 1.通過,穿透過。 2.(糖漿等)滴下成絲狀。 They threaded carefully along the narrow pass. 他們沿著狹窄的小路小心翼翼地魚貫而行。 -one: 后綴 【化學】表示“酮”。 a one: adj. 〔口語〕第一流的。 The meals there are A one. 那里的飯菜是第一流的。 as one: 一致at one: 一致地be in one: 在領導崗位but there is no one: 但是這里沒有一個人but there is no-one: 但是這里沒有一個人for no one: 不為誰for one: 舉個例說in one: 成為一體; 合為一體; 合在一起; 在某人褲子后口袋里(是某人的囊中之物)it is one of the: 十遍處定no one: 沒人; 沒有人; 沒有一個人; 無人能比no one is there: 沒人在; 那我沉睡了許久no-one: 沒有一個of one: 定語后置on one: 記到…帳上; 在主語的位置上