concurrency issue when promises resolve at the same time

[ITzhaos]

I'm trying to use redux, but there is a concurrency issue which is not mentioned in the doc.

my reducer:

function counterReducer(state = { value: 0 }, action) {
    switch (action.type) {
        case 'incremented':
            return { value: state.value + 1 }
        case 'decremented':
            return { value: state.value - 1 }
        default:
            return state
    }
}

dispatch ussage:

urlsArr.foreach(url => {
	axios.post(url).then(response => {
		store.dispatch({ type: ''incremented''})
	});
});

will there be an error in the state of value if the requests return at the same time ?

It is difficult to request simultaneous return on a mobile phone, but I am worried that second action comes, but the first one is still dispatching.

does Redux have any measures to ensure that this problem does not occur?

[Mark Erikson]

Only one JS function can execute at a time - that's how the language and runtime work. It's impossible to have a second dispatch outside the store in this case while the first one is still happening.