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
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4. Orchestrating callbacks
- 4.1 Series
- 4.2 Parallel
- 4.3 Waterfall
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4.4 Collections
- 4.4.1 Parallel iteration
- 4.4.2 Parallel, but with limit
- 5. Using a work queue
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6. Using an event emitter
- 6.1 Consuming events
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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
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7. Streams
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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
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7.1 Readable stream
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8. Pipe specialisation via feature detection
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8.1 Analysing Mikeal/request
- 8.1.1 Wrapping .pipe()
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8.1 Analysing Mikeal/request
- 9. Summary
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