No products in the cart.
This post lists some subjective questions and answers related to Angular performance optimization. This collection contains some potential interview questions that may be helpful if you are preparing for a Frontend Engineering job interview specific to Angular framework. Check out Angular Interview Series – Topic Wise Q&A.
1. What is Angular performance optimization?
Angular performance optimization involves techniques to enhance the speed and efficiency of Angular applications, reducing load times and improving responsiveness.
2. What is change detection in Angular?
Change detection is the mechanism Angular uses to update the view when the model changes. Optimizing this process can significantly improve performance.
3. How can you optimize change detection?
We can optimize change detection by using OnPush change detection strategy, which checks for changes only when the input properties change or an event occurs.
4. What are lazy loading modules?
Lazy loading modules allow you to load specific parts of your application only when needed, reducing the initial load time and improving performance.
5. What is Ahead-of-Time (AOT) compilation?
AOT compilation pre-compiles the application during the build process, resulting in faster rendering and smaller bundle sizes compared to Just-in-Time (JIT) compilation.
6. How does trackBy help in ngFor?
Using trackBy with ngFor improves performance by helping Angular identify items in a list, reducing unnecessary re-renders when the list changes.
7. What are Angular’s built-in performance profiling tools?
Angular provides tools like the Angular DevTools, which help profile change detection and component rendering to identify performance bottlenecks.
8. How can you reduce bundle size?
We can reduce bundle size by removing unused modules, using tree shaking, and optimizing third-party libraries.
9. What is the purpose of the Angular Service Worker?
The Angular Service Worker helps cache application assets, enabling offline support and faster load times for subsequent visits.
10. How can you optimize API calls in Angular?
Using techniques like caching responses, debouncing user input for search queries, and batching requests can help reduce the number of API calls and improve performance.
These are a few questionnaires specific to Angular Components. I will be adding more questions and answers to this post. To know more details please refer to the Official documentation on Angular Performance Optimization.