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Angular Cookbook

You're reading from   Angular Cookbook Over 80 actionable recipes every Angular developer should know

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Product type Paperback
Published in Dec 2023
Publisher Packt
ISBN-13 9781803233444
Length 536 pages
Edition 2nd Edition
Languages
Tools
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Author (1):
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Muhammad Ahsan Ayaz Muhammad Ahsan Ayaz
Author Profile Icon Muhammad Ahsan Ayaz
Muhammad Ahsan Ayaz
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Toc

Table of Contents (16) Chapters Close

Preface 1. Winning Component Communication 2. Working with Angular Directives and Built-In Control Flow FREE CHAPTER 3. The Magic of Dependency Injection in Angular 4. Understanding Angular Animations 5. Angular and RxJS – Awesomeness Combined 6. Reactive State Management with NgRx 7. Understanding Angular Navigation and Routing 8. Mastering Angular Forms 9. Angular and the Angular CDK 10. Writing Unit Tests in Angular with Jest 11. E2E Tests in Angular with Cypress 12. Performance Optimization in Angular 13. Building PWAs with Angular 14. Other Books You May Enjoy
15. Index

Retry failed HTTP calls with RxJS

In this recipe, you're going to learn how to retry HTTP calls smartly with RxJS operators. We're going to use a technique called Exponential Backoff technique. Which means that we retry the http calls but with each next call having a delay more than the previous time for the attempt. And we stop after a number of maximum tries. Sounds exciting? Let's get into it

Getting ready

The app that we are going to work with resides in start/apps/chapter05/rx-retry-http-calls inside the cloned repository:

  1. Open the code repository in your Code Editor.
  2. Open the terminal, navigate to the code repository directory and run npm run serve rx-retry-http-calls with-server to serve the project with the backend server

This should open the app in a new browser tab and you should see the following:

Figure 5.13 – The rx-retry-http-calls running on http://localhost.4200

Let's jump into the recipe steps in the next section.

How to do it…...

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