CacheFactory for Angular

gistfile1.js

.factory('CacheFactory', ['$injector', function($injector){
        var cache = {};
        var cacheFactory;
        cacheFactory = {
            get: function(type, callback){
                if(!cache[type] || cache[type].length < 1){
                    console.log("no cache");
                    var factory = $injector.get(type);
                    factory.query({}, function(data, headers){
                        cache[type] = data.results;
                        return callback(cache[type]);
                    });
                }else{
                    console.log("cached")
                    return callback(cache[type]);
                }
            },
            clear: function(type){
                cache[type] = [];
            },
            push: function(type, data){
                cache[type] = cache[type].concat(data);
            }
        };
        return cacheFactory;
    }])

 CacheFactory.get('Groups', function(data){
      $scope.groups = data;
 });