Critical thinking in Node.js

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Critical Thinking in Node.js Morgan Cheng

Transcript of Critical thinking in Node.js

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Critical Thinking in Node.js

Morgan Cheng

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What is Node.JS?

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History• 2009, Ryan Dahl published Node.js• Bla Bla Bla

• https://blog.risingstack.com/history-of-node-js/

https://blog.risingstack.com/history-of-node-js/
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io.js & node.js

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Why choose JavaScript?

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JavaScript is clean in I/O

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Asynchronous Programming

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Scale Out? Scale Up?

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Single Thread?IT IS A JOKE

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Event Loop

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"Everything runs in parallel except your code"

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How about add Threading in JavaScript?

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Promise vs CPS

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CPS• Easy to callback-hell• High Performant

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Promise• Seems winning

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Rocks for I/O intensive job

Sucks for CPU intensive job

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But, Node.js might still fail your Expectation

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Watch Out

• Sync API• Loop•Recursion•GC

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It Could Freeze You!

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Garbage Collection

Real Single Threading

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This is Node.js

Happy?

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Any Question?


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