Flow Control Patterns
Flow Control Patterns
Mastering asynchronous flow control in Node
About the Book
In JavaScript, any operation involving the network or the file system is always asynchronous. Once you start implementing complex logic, coordinating I/O operations can become a challenge in Node. This book will give you basic patterns and tools that will allow you to master and control asynchronous flow in Node. It covers the standard Callback pattern, queues, Event Emitters and Streams.
About the Author
Table of Contents
- 1. The source code
- 2. Introduction
- 3. The Callback patterm
-
4. Orchestrating callbacks
- 4.1 Series
- 4.2 Parallel
- 4.3 Waterfall
-
4.4 Collections
- 4.4.1 Parallel iteration
- 4.4.2 Parallel, but with limit
- 5. Using a work queue
-
6. Using an event emitter
- 6.1 Consuming events
-
6.2 Producing events
- 6.2.1 How event emitter handles errors
- 6.3 Listening to events once
- 6.4 Synchronous event delivery
- 6.5 Event delivery exceptions
-
7. Streams
-
7.1 Readable stream
- 7.1.1 Creating a readable stream
- 7.1.2 Pull stream vs. push stream
- 7.2 Writable streams
- 7.3 Connecting streams using pipe
- 7.4 Flow control in streams
- 7.5 Transform streams
-
7.1 Readable stream
-
8. Pipe specialisation via feature detection
-
8.1 Analysing Mikeal/request
- 8.1.1 Wrapping .pipe()
-
8.1 Analysing Mikeal/request
- 9. Summary
The Leanpub 60 Day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.
You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!
So, there's no reason not to click the Add to Cart button, is there?
See full terms...
Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earnedover $14 millionwriting, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
