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View Code? Open in Web Editor NEW:clock9: 基于SpringBoot和Spring自带的scheduled的定时任务,可以动态修改、删除、增加定时任务。
:clock9: 基于SpringBoot和Spring自带的scheduled的定时任务,可以动态修改、删除、增加定时任务。
你好!
为什么MapContainer 中的deleteMap只删除了map中的实例,没有把数据库中的数据删掉呢?
想探讨一个问题
比如:现在数据库里有几十万会员(会员可能越来越多),不管用户在不在线,我想在每天中午十二点的时候定时给他们送10颗豆子,当天内不管用户什么时间登陆,就可以看到有一条记录,系统在12:01赠送了10颗豆子(就比如,我现在十二点在线的时候,刚好到了十二点过一分,系统就自动送了我10颗豆子),怎样能保证这个时间的准确性。以及每个用户都能插入这个10颗豆子
求思路
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