The theory

Job A: 5 sec
Job B: 6 sec
Job C: 7 sec
So, to handle job A,B,C we need 5 + 6 + 7 = 18 sec
How to improve it ?
You can do all job asynchronous
So, all to job will be executed at the same time

How to do it in Go

How to do it in NodeJs

Promise.all

How to do it in Swift

concurrency queue

How to do it in Java

AsyncTask

The notice

we don’t know exactly when the job complete, data return

Concurrency and parallelism

Keywords

Concurrency
parallelism
async
go routine

Reference

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Build for global scale: AFK scale cube and basic rule to build an application for global scale

REF https://akfpartners.com/growth-blog/scale-cube

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