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[程序员] 咨询一个关于锁的业务问题

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在分布式 Web 后端中，各位老哥们会考虑在业务接口中引入锁 信号量这种吗？

我记得很久以前我在一个博客中看到 能不用 lock 尽量不用 说 一个是不好控制 另外一个是容易吃性能

各位老哥们能指点下？或者心得？

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