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yuyinhao avatar yuyinhao commented on June 19, 2024

decr本来就是原子操作

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myhearis avatar myhearis commented on June 19, 2024

decr本来就是原子操作

如果 在分布式的条件下，多个消费者进行消费，这时候库存是1，两个秒杀请求都同时通过了校验，那么你直接减库存，哪怕是这原子操作，也最终是-1啊，所以我觉得得用分布式锁去防止这种情况。

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