如何在ExpressJS中经过一段时间后从字典中删除对象

Question

Let's suppose we have a dictionary with some values like this

const members = {
"NAME1": "TEST1",
"NAME2": "TEST2",
"NAME3": "TEST3"
};

How would we delete a value after a certain time period , let's say 5 minutes. Note that we are using this on an Nodejs/ExpressJS server and it can not block the whole server. It has to be either a thread or something similar.

delete['NAME1'] and then we call this. What is the right way to do this? I tried making a loop and sleeping 5 minutes but that doesn't work as it blocks the whole server until it sleep passes away.

Answer 1

You're looking for setTimeout and the delete keyword:

 let members = { "NAME1": "TEST1", "NAME2": "TEST2", "NAME3": "TEST3" }; const ONE_SECOND = 1000; setTimeout(() => { delete members['NAME2']; console.log(members); }, ONE_SECOND * 3); console.log(members);