英文:
Express App: How can I create a setTimeout specific to each user
问题
以下是翻译好的部分：
当用户通过向'/signup'发出POST请求注册时，我的想法是创建一个与该特定用户相关联的setTimeout（计时器需要是唯一的）。setTimeout的回调将负责在X分钟内对用户的个人资料进行更改。我还希望存储对此计时器的引用，以便在X分钟内用户在'/delete'路由上删除其帐户之前可以删除它 - 因此需要在路由之间传递对计时器的引用。
这是否可行？如果可以，如何实现？
英文:
The idea is as follows:
When a user signs up by making a post request to '/signup' I want to create a setTimeout relating to that specific user (the timer needs to be unique). The callback (from the setTimeout) will be responsible for making changes to the user's profile in X minutes. I would also like to store a reference to this timer so that it can be deleted should the user delete their account (/delete route) before X minutes has passed - so the reference to the timer needs to be passable between routes.
Is this possible? If so, how can it be achieved?
答案1
得分: 0
我明白你的观点，这里是一个使用全局映射对象实现的简单想法。
const userTimers = new Map();
app.post('/signup', (req, res) => {
const user = req.body.user;
const timer = setTimeout(() => {
//做一些事情
}, 1000 * 60 * 20);
// 保存用户的定时器，你可以使用其他键
userTimers.set(user, timer);
res.send('success');
});
app.post('/delete', (req, res) => {
const user = req.body.user;
if (userTimers.has(user)) {
const userTimer = userTimers.get(user);
clearTimeout(userTimer);
userTimers.delete(user);
}
res.send('delete timer');
});
app.listen(3000, () => console.log('监听在3000端口...'));
英文:
I see your point，here is a simple idea implement using a global map object.
const userTimers = new Map();
app.post('/signup', (req, res) => {
const user = req.body.user;
const timer = setTimeout(() => {
//do some thing
}, 1000 * 60 * 20);
// save user's timer, you can use others for key
userTimers.set(user, timer);
res.send('success');
});
app.post('/delete', (req, res) => {
const user = req.body.user;
if (userTimers.has(user)) {
const userTimer = userTimers.get(user);
clearTimeout(userTimer);
userTimers.delete(user);
}
res.send('delete timer');
});
app.listen(3000, () => console.log('listen on 3000...'));
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