Dirty read: thread one writes data; thread two reads what thread one wrote. Thread one then overwrites the data, thus leaving thread two with old data.

 
  • 線(xiàn)程1寫(xiě)入了數據,線(xiàn)程2讀取了線(xiàn)程1所寫(xiě)入的數據。線(xiàn)程1更改了數據,最后線(xiàn)程2讀取的是沒(méi)有更新的舊數據。
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