JavaScript Quick Tip Fetch in Parallel

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One gotcha that comes up frequently and has a serious impact on application performance is the tendency to accidentally fetch data in serial that could have been fetched in parallel. Don't just drop an await in everywhere you use promises. Instead, think about the fetching dependencies. If you're fetching more than one thing, make sure you fetch in parallel whenever you can. This will make a huge difference in your application's performance.

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#JavaScript #Code #SoftwareEngineering

Eric Elliott

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Good and straightforward content. Love it!

felipezarco

I was first introduced to your work by watching your video "Classical inheritance is I've been learning JS, and almost every tutorial or lesson I go to always introduces classes first.
I keep going to your article and video all the time. Thank you for your work. Love these little tips.

eyjaythejansenite

Thanks for the tip. I like how you went straight to the point.

franco-cespi

Thank you! Love your gpt-3 interview and hi from New Zealand!

mihaidinul

thank you elliot
didnt know about this

rdrglpzcnt

Damn, this is so obvious in hindsight. Feel silly for not doing this before.

hynjus

Straight forward and really helpful. Appreciate it!

christazos

Of course the real answer to the riddle is that one should request everything needed in one request.

gabydewilde

That's my fav. interview question but with slight twist(error cases). Which can be handled by allSettled, but I like custom implementation untill the function becomes common.

sujitkumarsingh

That's the problem with async/await. It makes people think of promises as sync calls and use them in a blocking way.

JuanPablodelaTorre

Learn something new everyday! Thanks. I wonder why call in the first example don't run in parallel...

Anonymous-vhkp

:-) when possible, start promises asap and await only when you *need* to use the data

rolfnoduk

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