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Asynchronous JS in Node

Avatar for Sean Hagstrom Sean Hagstrom
January 27, 2015
Technology
2
160

Asynchronous JS in Node

A presentation on Node's Async Operations and styles of programming used to coordinate with them.
Avatar for Sean Hagstrom

Sean Hagstrom

January 27, 2015
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Transcript

  1. Asynchronous Javascript in Node by Sean Hagstrom, Originate Inc.

  2. Synchronous VS Asynchronous

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  13. Async Operations in Node IO File System Network ETC. Database

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  17. Callback Pattern
 (CPS)

  18. Node’s Callback Pattern Callbacks Actors

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  25. Error Propagation

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  38. Don’t Rely on Return Values From Actor

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  42. Don’t Throw Errors in your Callbacks

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  48. OOPS Process Just Crashed

  49. Limitations of The Callback Pattern

  50. Chaining Operations B C A

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  63. Parallel Operations B C A

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  80. Async.js - Better Callbacks

  81. Chaining Operations with Async.js

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  93. Parallel Operations with Async.js

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  106. Promises

  107. States of a Promise Pending Rejected Resolved

  108. Actors can return Promises!

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  129. Promises Have Better Error Handling

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  136. Promises Are Always Asynchronous

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  176. Chaining Operation with Promises

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  191. Parallel Operations with Promises

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  201. Summary

  202. Questions?