angularjs too many request queue using promise

angularjs дээр олон тооны request илгээхдээ хүсэлт очиж байгааг дараалийг удирдаж дэс дараалалтай яаж илгээх вэ?

<div ng-app>
  <h2>$q test</h2>
  <div ng-controller="TodoCtrl">
      <div ng-bind="'Promise1: ' + Promise1"></div>
      <div ng-bind="'Promise2: ' + Promise2"></div>
      <div ng-bind="'Promise3: ' + Promise3"></div>
      <div ng-bind="'Promise4: ' + Promise4"></div>
      <div ng-bind="'Promise5: ' + Promise5"></div><br />
      <div ng-bind="'Status1: ' + Status1"></div>
      <div ng-bind="'Status2: ' + Status2"></div>
  </div>

</div>

JS:

function TodoCtrl($scope, $q, $timeout) {

    function createPromise(name, timeout, willSucceed) {

        $scope[name] = 'Running';

        var deferred = $q.defer();

        $timeout(function() {

            if (willSucceed) {

                $scope[name] = 'Completed';

                deferred.resolve(name);

            } else {

                $scope[name] = 'Failed';

                deferred.reject(name);

            }

        }, timeout * 1000);

        return deferred.promise;

    }

    

    // Create 5 promises

    var promises = [];

    var names = [];

    for (var i = 1; i <= 5; i++) {

        var willSucceed = true;

        if (i == 2) willSucceed = false;

        promises.push(createPromise('Promise' + i, i, willSucceed));

    }

    

    // Wait for all promises    

    $scope.Status1 = 'Waiting';

    $scope.Status2 = 'Waiting';

    $q.all(promises).then(

        function() { 

            $scope.Status1 = 'Done'; 

        }, 

        function() { 

            $scope.Status1 = 'Failed'; 

        }

    ).finally(function() {

        $scope.Status2 = 'Done waiting';

    });

}

result:

Promise1: Completed

Promise2: Failed

Promise3: Completed

Promise4: Completed

Promise5: Completed

Status1: Failed

Status2: Done waiting