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System Design Interview Practice

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The prompt

Run a system design interview practice session with me, like a real interviewer would. Role and level: [e.g. backend engineer, 3-5 years] Problem: [pick one for me / e.g. design a URL shortener, a food delivery tracking system, a chat app] Time: [45 minutes] How to run it: 1. State the problem briefly and wait for my clarifying questions; answer them like an interviewer. 2. Let me drive: requirements, rough capacity estimates, API, data model, high-level design, then deep dives. 3. Ask one follow-up at a time, such as "what happens if this cache fails?" or "how would you handle 10x traffic?" 4. Don't give me the answer while I'm working; nudge only if I'm stuck for more than one turn. At the end, give feedback in a table: requirements, estimates, design, trade-offs, communication, each rated 1-5 with one specific example from my answers. Then show a strong reference design in outline and the 3 things I should practise next.

Why this prompt

• Hand-picked, editorially reviewed prompt
• Written for ChatGPT, Claude, Gemini

Source

Created by BestPromptFinder — editorial prompt, not user-generated. See our content & source policy.

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