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方案答辩

方案答辩的通用版 —— 重写、自研、加缓存那几类另有专门的一份。

Copy the prompt, then pick a model. It plays the interviewer and asks you through it scene by scene instead of handing you the answer.

On a phone with the app installed, the system opens the app directly. Links cannot open external apps inside WeChat — open it in a browser first.

这一份是兜底的:任何方案都能拿来答辩,代价是判卷比专门那几份粗。

通用的那套是三个必问的备选:什么都不做、最笨的那个办法、只做一半。三个都答不上来为什么不行的话,那不叫选型,叫已经决定了。

最值钱的产出在第四幕:把方案成立的前提假设一条条列出来,逐条判「不成立的话是变差一点,还是整个白做」。第二类那几条就是这个方案真正的风险。

★★★★☆ · about 45 min · Tests: 问题成不成立、备选评估、前提假设、回滚与验收判据

What this one tests

Trade-offs and costs Concrete numbers Failure and outages The part you did

Have you done this one?

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Notes from people who did this one

Nobody has written yet. After you run it, say what came out of the conversation — which scene stumped you, which conclusion you changed afterwards.

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How to use this

The more specific the prompt, the sharper the grading: each specific one carries the root-cause checklist for that kind of situation, and the generic group is the fallback when none of them fits. The system design set grades you on "a benefit with no cost attached means you memorised it"; here the line is different: if you can't give a specific, it's empty.

How to start

  1. Pick one, open it, copy the prompt.
  2. Paste it into a brand-new conversation.
  3. Say in a sentence or two which thing you're going to talk about, then wait for its questions — unlike the system design set, where you say nothing after pasting.

Three commands you can call out at any time

  • 跳过 move to the next scene now
  • 换一个 start over with a different project, outage or experience
  • 复盘 jump to the wrap-up and print the review card

Three traps

  • When it starts consoling you, point it back to the "don't praise me" rule — the two retrospectives are the likeliest to summon a model's soothing persona, which turns the whole thing into emotional support rather than a retrospective.
  • Cut it off when it tries to complete your answer for you. You say "I don't remember", it offers "probably because the schedule was tight" — and that sentence is no longer your memory.
  • Before pasting a CV or a design doc, strip out phone numbers, email addresses and anything your company wouldn't want leaving the building.

Got a proposal to pitch? Start with defending it. Just finished a project or lived through an outage? Do those retrospectives while you still remember. Job hunting? Audit the CV first, then take the lines that survived into the behavioural drill.