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Notes on Linux, Golang, networking, and the operational side of building software.

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· 5 min read Networking

The OSI 7-Layer Model in the Real World

When users complain that 'the app is broken,' they're describing a Layer 7 experience, even if the real failure lives far below it. This is why experienced engineers mentally walk the OSI model top-down, ruling out what's visible first and drilling deeper only when needed.

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