短語(yǔ)詞組短語(yǔ)Versioning for optimistic locking 樂(lè)觀鎖定版本控制Pessimistic and Optimistic Locking 消極鎖和樂(lè)觀鎖optimistic locking algorithm based 樂(lè)觀鎖機(jī)制Optimistic locking using check -and-set 樂(lè)觀鎖 返回 optimistic locking