You get a prompt.
Sixty seconds.
No script.
Then you see exactly what happened — your words quoted back to you, timestamped, scored, with one thing to fix next time.
Three steps. Under two minutes.
“Design a distributed rate-limiting architecture spanning 5 global cloud regions.”
No prep. No notes. No script.
+ timestamped findings, filler count, micro-drill
Pick a track.
System Design & Engineering
“Explain what a Load Balancer is and why it's critical for scale.”
“How do you handle race conditions in an inventory system during a flash sale?”
“Design a distributed rate-limiting architecture spanning 5 global cloud regions.”
Impromptu & Fluency
“What is one hobby you wish you had started earlier?”
“Is failure a necessary step toward achieving true success?”
“Convince an audience that privacy is more valuable than convenience.”
This is what your report looks like.
“Design a distributed rate-limiting architecture spanning 5 global cloud regions.”
“...I'd probably use Redis for that...”
Named the tool without explaining why. At scale, Redis replication lag under write contention invalidates simple TTL-based limiting.
→ State the failure mode first, then justify the choice.
“The first question I'd ask is what's our SLO...”
Opened by clarifying requirements — correct system design instinct under time pressure.
In your next attempt, lead with the constraint before the solution. Practice a 15-second cold open naming the failure mode, then build the architecture up.
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60 seconds, then you'll see your report.
Pick a track, take an impromptu prompt, and see your first timestamped coaching breakdown.
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