angular performance testing tools

Why should I test my angular application?
Testing your Angular application helps you check that your application is working as you expect. Before writing tests for your Angular application, you should have a basic understanding of the following concepts:
What is the angular performance checklist?
This Angular performance checklist was created to help you tackle your Angular application like a football-tackling-rock-star. If you want to download the Angular Performance checklist, then click on this link. Otherwise, keep reading and I will give you the step-by-step formula to make your Angular application perform faster than it ever has.
Does angular have a performance bottle-neck?
First, there are two performance bottle-necks that your Angular application might have. Angular load performance refers to how long it takes for a browser to download your application, load it into the browser, parse the JavaScript and get it displayed to your user. Once it’s loaded, the next type of performance is runtime performance.
What is angular load performance?
Angular load performance refers to how long it takes for a browser to download your application, load it into the browser, parse the JavaScript and get it displayed to your user. Once it’s loaded, the next type of performance is runtime performance. Is your Angular app snappy and fast as users interact with it? Or does it slow down at times?

Javascript and Initial Load Time

One of the most expensive types of assets in an app is JavaScript. Once the browser downloads a JavaScript file, it often has to decompress it, after that parse it, and finally execute it. That is why it’s critical for the performance of an app to ship fewer bytes of JavaScript during the initial load time. There are variety of practices we can app

code-splitting with Angular

There are two main approaches to code-splitting: 1. Component level code-splitting 2. Route level code-splitting The main difference between these two techniques is that with component level code-splitting, we can load individual components lazily even without a route navigation. For example, we can load the component associated with a chatbox only

Preloading Modules

There’s a built-in strategy that preloads all the modules in the application. You can use it by configuring the Angular router: The risk with this strategy is that in an application with many modules, it may increase the network consumption and also block the main thread when Angular registers the routes of the preloaded modules. For larger apps, w

Performance Budgets

To monitor our apps over time, the Angular CLI supports performance budgets. The budgets allow us to specify limits in which the production bundles of our app can grow. In the workspace configuration, under the budgetssection, we can specify several different types of budgets: All of them accept maximumWarning and maximumError. If we exceed the bud

Efficient Serving

Looking at datasets of a lot of Angular apps running into the wild, we noticed that over 25% of them do not use content compression. Even more, don’t use a Content Delivery Network (CDN). These are two easy wins that are very simple to implement as part of the deployment pipeline. To allow developers to ship fast Angular apps from end-to-end as par

Conclusion

In this post we looked at few practical approaches to speed up an Angular app. We saw how to reduce the size of our JavaScript bundles using component-level and route-level code-splitting. As the next step, we discussed preloading strategies that can speed up page navigation. To monitor our app’s performance over time we introduced performance budg

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