The system design tradeoff nobody explained to me until an interviewer said it out loud
Spent weeks memorizing components, load balancer here, cache there, without anyone telling me the actual point is showing you know what you're giving up with each choice. Consistency for availability, latency for durability, whatever the pair is for that problem. Once an interviewer said 'I don't care which one you pick, I care that you know the cost,' the whole practice changed for me.
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AnonymousAnon This is why I started ending every design answer with 'here's what breaks if load 10x's' even if they didn't ask, it forces the tradeoff conversation instead of just listing boxes.
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AnonymousAnon This is the framing that should be taught first honestly, before any of the actual components. Knowing the tradeoff pairs cold makes every follow-up question so much easier to answer.