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Mastering Reactive JavaScript

You're reading from   Mastering Reactive JavaScript Building asynchronous and high performing web apps with RxJS

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Product type Paperback
Published in May 2017
Publisher Packt
ISBN-13 9781786463388
Length 310 pages
Edition 1st Edition
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Author (1):
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Erich de Souza Oliveira Erich de Souza Oliveira
Author Profile Icon Erich de Souza Oliveira
Erich de Souza Oliveira
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Table of Contents (12) Chapters Close

Preface 1. What Does Being Reactive Mean? FREE CHAPTER 2. Reacting for the First Time 3. A World Full of Changes - Reactive Extensions to the Rescue 4. Transforming Data - Map, Filter, and Reduce 5. The World Changes Too Fast - Operators to Deal with Backpressure 6. Too Many Sources - Combining Observables 7. Something is Wrong - Testing and Dealing with Errors 8. More about Operators 9. Composition 10. A Real-Time Server 11. A Real-Time Client

Going beyond the basics

RxJS supplies a lot more than just operators to do simple transformation in your data, we learned some more complex usages for it and we will review the most important of it.

Dealing with backpressure

Backpressure happens every time you receive data faster than you are able to process for a given time.

Before even starting to code your solution for back pressure you must decide if you are willing to spend memory or lose data.

When you can lose data you can use a lossy strategy; the advantage of this strategy is it has a low consumption of memory, and lets you mitigate the problem using constant memory. The lossy operators that we learned are as follows:

  • throttle()
  • sample()
  • debounce()
  • pausable()

If you cannot lose data, you can use memory...

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