timequeue.js

var TimeQueue = require('timequeue');

var n = 0;
function worker(callback) {
  console.log('request'+(n++));
  callback(null, 'good');
}

var x = 0;
console.log('0 minute');
setInterval(function() {
  console.log((++x)+' minute');
}, 60000);

var q = new TimeQueue(worker, { concurrency: 5, every: 60000 });
setInterval(function() {
  q.push();
}, 100);