Executing multiple nested $http calls in Angular can significantly slow down the process

Within my angular application, I am currently dealing with 6 to 7 http chaining requests that are taking a significant amount of time to execute. What are some strategies for optimizing this process?

empSvc.getallEmp().then(function (data) {
    if (data !== null && data.length > 0) {
        repos.saveEmp(data).then(function () {
            repos.getemp().then(function (result) {
                ctrl.emp= result;
                getsubordinates().then(function () {
                    deleteinactive(data).then(function () {
                        deleteinactiveSubordinate(ctrl.emp).then(function () {
                           console.log(success);

                        });
                    });
                });
            });
        });

Answer №1

The issue with slow http calls in Angular is not related to angular itself, but rather a result of factors such as network connection speed, payload size, and backend server processing power.

If you have control over the backend api functions and routes, consider creating a custom route that consolidates multiple requests into one to provide all necessary data efficiently.

For example, instead of making separate calls for downloading product categories, category products, product details, comments, and ratings, you could create a shortcut route like `/products/{category}/all` to retrieve all this information in one go.

By combining requests or running independent queries in parallel, you can improve speed and reduce overhead.

Additionally, if the Angular app is handling tasks like deleting inactive users, it may be more efficient to delegate this process to the backend server using scheduled jobs.

Providing more details about the functionality and request submissions of these functions will help in offering specific advice tailored to your needs.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Error: The JavaScript variable 'undefined' is being used as a function, which is incorrect. This error occurs when trying to execute the function `mockBackend

I am currently working on unit testing an AngularJS controller using Karma and Jasmine. Below is the test suite I have created: describe('Controllers', function(){ var $scope, ctrl; beforeEach(module('curriculumModule')); ...

Event that signifies a change in the global state of the Angular 2 router

Is there a universal event that can be utilized for state change/start across all components, similar to the Component Lifecycle Hooks ? For example, in UI-router: $rootScope.$on("$stateChangeStart", function() {}) ...

Steps to store user input into an array and subsequently combine the stored input:

I am currently working on a form that consists of two text boxes: Task and Description. My goal is to be able to log the input from both boxes and save it via a submit button. For example: Task: do laundry Description: do a buttload of laundry (idk lol) I ...

Triggering a re-render in React

There are times when I find myself needing to trigger a re-render while still in the middle of executing a function. As a solution, I've developed a method using the state variable my_force_update. Basically, I change it to a random value when I want ...

JavaScript syntax issue: Required formal parameter not found

Can someone help me understand why this error message is showing up in the console for the code provided? I've followed the link indicated as the issue and it points to this specific line: " $('tr').each(function() { ". (I may have included ...

The Cascading of Bootstrap Card Designs

Looking for some assistance with my TV Show Searcher project that is based on an API. The functionality is complete, but I'm struggling to get the Bootstrap cards to stack neatly without any empty space between them. I want it to resemble the image ga ...

Implementing a dual hover effect on a Div element

I am working with HTML code that includes an image and text <div class="subcontainer1"> <img src="a.png" alt="" class="imgcolumn"> <h3 class="header3">Hello</h3> </div> This setup places the content above the image. ...

Issue persists: Ajax functionality remains nonfunctional, prompting the need for

My goal is to use the post input, and upon hitting enter, I want to dynamically replace <div id="mainPagePosts"></div> with new data without causing a page refresh. However, even after submitting the post, the page still refreshes, although I d ...

Can the details of a package be retrieved from a Nuget private store using a REST API?

Currently working on an Angular 8 project that involves displaying the details of Nuget packages from a custom store. I am wondering if it is possible to retrieve package details from an NPM custom store using a REST API? Something similar to: https://lea ...

Combine two columns into a single table column using HTML/CSS and JavaScript with the help of Datatables

I utilize the DataTables library from https://datatables.net/ to create sortable and searchable tables on my website. However, my table becomes too wide due to the numerous columns it contains. I am looking for a way to condense the width by merging relate ...

Numerous database deletions, but only one linked to a cloud function

I have created a cloud function that listens for deletions from the firebase realtime database. It works perfectly when there is only one deletion -- the console confirms the removal of that item. However, I noticed that if multiple deletes happen simulta ...

Guidelines on creating actionable functions using JavaScript

Having trouble connecting the form to the database and looking for a solution. This is the HTML form that I've been working on, attempting both POST and GET methods. <form id="register" action="script/register.js" method="post"> <label for= ...

Having difficulties retrieving JSON data

I'm encountering an issue while trying to retrieve my JSON data using an AJAX request. JSON { "Ongoing": [ {"name": "meh"}, {"name": "hem"} ], "Completed": [ {"name": "kfg"}, {"name": "dkfgd"} ] } ...

Path taken to reach the view requested by Node.js server

Snippet of Controller Code: bina: function(req, res) { var request = require('request'); request({ url: 'http://localhost:3000/bina/', method: 'GET', }, function(err, res, body) { ...

The XMLHttpRequest is displaying additional characters within its response

Upon completing an XMLHttpRequest(), I am receiving the unexpected output of "true↵↵↵". In my php file, all I have is echo json_encode(true); Can anyone shed some light on why this strange behavior is occurring? Thank you ...

How can I send an API request with a callback function as an argument using node.js?

If you want to access the getPlayers(callback) method, it is described as follows: getPlayers(callback) callback - This parameter is necessary. It will be called with an object of players players - An object that contains all the players who are curr ...

Is there a way to programmatically update the content of a React Bootstrap modal?

I have been attempting to modify the content of a modal after it has been loaded, but I am struggling to identify the correct nodes for modification. I have added references to the nodes I want to change and attempted to alter them in componentDidMount(). ...

Bootstrap 5 alert: The function `$(...).carousel` is not recognized

Despite browsing through numerous similar questions, none of the solutions seem to work for my issue. Listed below are some points I have checked: Jquery is loaded before bootstrap Bootstrap libraries are up to date Confirmation that bootstrap.min. ...

Using enzyme mock function prior to componentDidMount

When it comes to mocking a function of a component using Jest, Enzyme, and React, the process typically involves creating a shallow wrapper of the component and then overloading the function as needed. However, there seems to be an issue where the componen ...

Can anyone offer me advice on troubleshooting a failed Capifony deployment caused by a time out during the assetic:dump process?

$ cap deploy Unfortunately, the deployment process is failing and I am receiving the following error message: * executing "cd /var/www/site/prod/releases/20120831164520 && php app/console assetic:dump web --env=prod --no-debug" servers: ["site ...