CODEWITHSUNDEEP
javascriptnode.js
Sara Ree
Sara Ree

Reputation: 3543

limit execution of a function for specified user at one per minute

I have a route like this to execute a function:

router.post('/send-verification-again', sendVerificationAgain);

At the function above we have the email or phone number of the account in which we want to verify.

This will execute a function to send an email or sms to the user with his/her verification code ok?

Apparently we don't want the user to be able to send more than one request per minute to this route, right?

How can I limit execution of a function for specified user at one per minute?

function sendVerificationAgain(email) {
  // for each specific email here the function can be executed one time per minute
}

This is very common functionality, is there any convention to do this?

Upvotes: 2

Views: 151

Answers (1)

Kelvin Schoofs
Kelvin Schoofs

Reputation: 8718

You can simply store the email for a minute and check if it's stored:

const recentlySent = new Set();

function sendVerificationAgain(email) {
    if (recentlySent.has(email)) return;
    recentlySent.add(email);
    setTimeout(() => recentlySent.delete(email), 60e3);
    // ...
}

You might also want to first normalize the email, e.g. lowercase it.

For more information, look up "debounce" in the programming sense

Upvotes: 3

Related Questions