request-async.js

var request = require('request');
var async = require('async');

var q = async.queue(function(task, callback){
	request('http://site.com/?page=' + task.index, function( err, res, body ) {
		console.log('Finalizado ' + i);
		callback();
	});
}, 1);

for (i = 0; i < 1000; i++){
	q.push({index: i});
}