🧒 Explain like I'm 5
Think of your app like a big house. Some things, like the TV remote, are used by everyone, so they stay in the living room. Other things, like your toothbrush, are just for you, so they stay in your bathroom. In apps, we decide where to keep information based on who needs to use it.
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Senior-level deep dive: internals, pitfalls, and a self-interview ladder.
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