Monitoring of Applications Written in AngularJS

The digital age is always looking for new and more innovative technologies that can make the world a better place. The changes we are seeing in today’s technology are not only fast but exponential. AngularJS can be defined as one of the revolutions in this technology-driven world. That’s why in this article, we will talk about the foundation of AngularJS, angular upgrading services, and explain how to properly monitor performance applications.

At the time AngularJS was created, there were already many frameworks available that were written in JavaScript and used the model view controller pattern. However, what made AngularJS stand out from the others is its unique and powerful features that are beneficial to the web designer or designer user experience by helping them build rich Single Page Applications (SPAs).

AngularJS: advantages and disadvantages


Below are the benefits of AngularJS that have quickly caught the eye of developers around the world:

  1. Open-source. AngularJS is a pure MVC-based JavaScript framework available to anyone at an affordable price. Since it is open source, users can make changes according to their requirements to satisfy the client.
  2. Google supported. It’s open source and maintained by Google developers and a community of developers and organizations to solve many of the problems faced when developing Single Page Applications.
  3. Framework based on MVC/MVVM. AngularJS implements the MVC/ MVVC architecture. MVC/ MVVC stands for Model View Controller/Model View Controller. This architecture can make a huge application very easy to develop or easy to understand. This framework has various benefits such as a more flexible development process, the ability to render multiple views, and propagated data.

This feature can improve the visual presentation and make a complex application very light to understand. This architecture can be considered ideal when developing a large application, as it provides a solid foundation for application performance, as ModLogix explains.

  1. Two-way data binding. One of the most attractive features of AngularJS. Two-way data binding is nothing more than an integration between a view and a model. Updates or retrieval of data from the underlying data store is more or less automatic. When the data store is updated, the user interface also reflects the updated data. This allows you to remove the logic from the front of the display. This technique allows for true data encapsulation and reduces code complexity.
  2. Single Page Applications (SPAs). AngularJS is best known for its ACS building feature. SPAs are web applications that load the entire module in one go and update dynamically as the user interacts with the applications without continuous page reloads. With SPAs, you can effectively reduce server load and increase download speed to improve user experience. Being faster than regular apps, this is a great feature for businesses that want their web apps to run quickly and seamlessly.
  3. Can be customized and extended. Due to some built-in attributes, AngularJS can be extended. If necessary, you can quickly create individual directives. Users can add or remove a feature and change the directives to suit the demand.
  4. Plain Old JavaScript Objects (POJO) Data models. The data models in AngularJS use Plain Old JavaScript Objects (POJOs), which means that AngularJS doesn’t need any further getter and setter methods. Due to this functionality, there is no additional requirement to bind AngularJS with additional data sources to add getter and setter methods. This makes AngularJS self-assertive.
  5. Injection dependency. This is the process of introducing dependent functionality into a module that was given to the component before. This whole process happens at runtime. Using dependency injection improves the efficiency of components by making them more compatible, reusable, manageable, and testable.
  6. Additional functions. The list could go on and on. Other benefits include simple architecture, ease to test, use of directives, simple HTML templates, rapid prototyping, responsive web pages, code reuse, and parallel development.


  1. Memory leak. AngularJS is purely JavaScript based and the issue of memory leaks has always been a problem with JavaScript. This can lead to huge problems such as app crashes, increased response delays, and slower growth.
  2. Security questions. This structure can be considered less secure due to the lack of authorization and authentication checks. Authentication verifies the user and authorization is to check if the user has permission to access the data only after that we can grant permission for the same. AngularJS does not provide any of these features.
  3. Complex frames. It has a rather layered and complex hierarchy when it comes to frameworks. Developers need to dive in to understand what’s going on at the front end and how the whole process takes shape. If the developer is not experienced, this structure is rather troublesome to understand.
  4. It depends entirely on JavaScript. As if we were to remove JavaScript from the code, it would be just a basic HTML web page with any functionality.

Monitoring AngularJS

Applications In the past, we had tools like YSlow or Google Page Speed ​​to help us control page loading. This gave us a general idea of ​​why apps are loading slowly. And then if we look at the core primitives, some APIs were built for performance monitoring, taking us a little deeper into how the application is performing in real-time. Below are examples of some of the APIs. More details on this topic you can learn by contacting ModLogix.

Navigation timing API the navigation

Timing API, which most of the traditional RUM (Real User Monitoring) services use, helps us gain a deeper understanding of performance. By integrating this into our application, we can see when a page request started and how long it takes.

Resource Synchronization API

Later we had a resource time API. By integrating this API, we can see the individual time to load each resource, for example, for certain style sheets or an image. Again, it’s all about loading assets or initializing a page.


As we already mentioned, AngularJS is a pure JavaScript-based framework so every page loads every service call which is taken care of by JavaScript/ AJAX calls due in which JavaScript plays a crucial role.

So, to improve the user experience, we need to make sure that the JavaScript is bug-free and that all extensions work as expected, without causing any errors that could crash the application or degrade the user experience.