Cache Service

gistfile1.js

function($http, $q) {
    var cache = {};

    return {

        get: function (force){
            var deferred = $q.defer();

            if(force || !cache['get']){
                return $http.get('/path/to/data').then(function(result){
                    return cache['get'] = result;
                });
            } else {
                deferred.resolve(cache['get']);
                return deferred.promise;
            }
        }

    };
}