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[NEW] 能否增加一个 setNX 类似的功能，不存在则赋值，存在则返回旧值 #15

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suikelei opened this issue Nov 4, 2023 · 0 comments

suikelei commented Nov 4, 2023 •

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The problem/use-case that the feature addresses

在实现可重入锁时，如果直接返回旧值，则可以减少一次查询

Description of the feature

不存在则赋值，存在则返回旧值

Additional information

或者是否有用TairString实现可重入的案例？

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