Prep Room
Coach note

System-design questions are about the trade-offs you make when no answer is obviously right. Interviewers want to see scope, the bottleneck you pick, and the rejected designs you can articulate.

System design · Architecture

Design a metrics dashboard that ingests 10K events per second and shows 1-second-resolution graphs back to thousands of users.

Type your answer
0of ~220 wordsAbout a minute spoken

Voice isn’t supported in this browser — type your answer in the box.

Create a free account to get more critiques.

Your answer
Your answer appears here as you speak.

Practice more

Thousands of questions, calibrated to your role — your progress saved across every session, with model answers and full breakdowns.