Why you should know JavaScript
before rewriting your application in Rust?
Luca Del Puppo
Luca Del Puppo
- Senior Software Developer
- JavaScript enthusiast
- TypeScript lover
- “Youtuber”
- “Writer”
Love sport: running, hiking
Love animals
Why this talk?_
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Do you really want to re-write years of code with Rust?
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Talk we the business
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Be clear_
I don't want to say that rewriting your applications or pieces of your applications in Rust is wrong!
Is it the proper benefit for your Business?
In 95% of the cases
The answer is NO!
In 95% of the cases
Check your JavaScript code; it is enough to improve your performance and save money for your business
In 95% of the cases
Your 💩 code blocks your main Thread
Before get started_
What we will learn today
- Some JavaScript syntaxes are slower than others
- Some JavaScript syntaxes are slower than others based on specific cases
- Some JavaScript syntaxes are slower than others based on the Node version
- How to not kill the main thread
- How to not waste time
What you MUST keep in mind when you work with performance in JS_
- Doing nothing is faster than doing something
- If you can offload the work to someone else, offload the work to someone else
- If you can do it later, do it later
- If you don’t have the yes answer on one of the first options, you have to do whatever you have to do as fast as possible
Let's jump into
the code_
Conclusions_
- don’t kill your main thread
- push the job outside if you can
- check what happens during the execution
- if you need performance, the bin is the right place for the Clean Code book
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Programs don’t run on mathematical abstractions; they run on hardware
About this presentation_
About code_
Luca Del Puppo
@puppo92
Luca Del Puppo
Puppo_92
@puppo
We are hiring
