controller

var Ctrl = angular.module('Controller',['ngRoute','Service']);

Ctrl.controller('Home',function($scope, TextoService,$rootScope){
  $scope.title = "Administração - Home";
  $scope.textos = [];
  TextoService.get(1).then(function(d) {
      $scope.textos = d;
      $rootScope.textos = d;
  });    
  
  $scope.Cadastrar = function(){
  TextoService.post(1,$scope.titulo,$scope.conteudo,"",""); 
  TextoService.get(1).then(function(d) {
  $scope.$watch('textos', function (d, o) {
      if (d !== o) {
        $scope.textos = d;
      };
    });
  });  
  $rootScope.reset();
  }
});

service

var Service = angular.module('Service',[]);

Service.factory('TextoService', function($http) {
  var promise;
  var service = {
    get: function(id) {    
      if ( !promise ) { 
        promise = $http({
        url: 'url', 
        method: "GET",
        cache: false,
        params: {id_pagina: id}
        }).then(function (response) {
            return response.data.retorno;
        });
      }
      return promise;
    }
  };
  return service;
});