JAVASCRIPT

node cron every second

This worked for me -

    cron.schedule("*/10 * * * * *", function() {
      console.log("running a task every 10 second");
    });
Hope this helps someone.

Reference - https://support.acquia.com/hc/en-us/articles/360004224494-Cron-time-string-format

node cron every 10 minutes

var cron = require('node-cron');

cron.schedule("0 */10 * * * *", async () => { //every 10 minutes
    console.log("running a task every 10 minutes");
});