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That I could guess. My point is that most code isn't in high traffic backend systems and games.

There are a million things that a person writing a boring CRUD web app doesn't need to know. But if you want to be a good programmer, you should probably understand how a computer works.

I didn't say you shouldn't. I just asked how often that kind of performance optimization mattered. The world is not comprised only of CRUD and situations where that kind of perf matters.

But I do agree that even if you don't have to worry about cache latency for every single thing you write, it is something you should know about.

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