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This post explores the concepts of concurrency and parallelism in JavaScript, discussing their definitions, differences, and practical examples. It also highlights the pros and cons of each approach. 

Concurrency vs. Parallelism in JavaScript

Which is better if I have 4 threads?
Deploy 4 dockerized apps that can handle concurrency
Deploy 1 dockerized app that can utilize 4 threads in parallel
Kinda liking the former for less complexity