Roadmap Day 1 · Month 1

• Map the full request lifecycle: browser → DNS → TCP → TLS → HTTP → server → response
• Identify which layer each latency contribution comes from
• Write the 8 steps from memory without looking

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• Explain the full request lifecycle aloud in English for 2 minutes
• Learn 5 words: resolve, handshake, payload, round-trip, latency
• Record yourself and listen back once

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• Study where a CDN and a reverse proxy sit in this flow
• Answer 3 interview questions about the request lifecycle
• Write today's key takeaway

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