RightInterview for
A system design interview assistant that gives you a framework, not an essay
In a design round you need structure fast. RightInterview turns the question into a cheat sheet you can think and speak from: the main rule, clarifying questions, APIs, a simple architecture, the hardest part and the failures to mention.
Updated October 31, 2026
- Covers all 17 parts interviewers look for, each kept to a few lines.
- Plain English, so you'll say “slow down new work when overloaded” instead of reaching for jargon.
- Starts simple and adds scaling only when the numbers require it.
- “Speaking notes” gives you 8–12 lines you can say straight away.
What the framework covers
- The prompt in one sentence and what's out of scope.
- What's being tested: duplicate actions, lost work, crashes halfway, out-of-order messages, hot keys.
- One main rule the design must never break, such as “sold plus held items never exceed stock”.
- Clarifying questions, functional and non-functional requirements.
- Core data, 3–5 APIs with their retry behavior, and a left-to-right architecture.
- The normal flow, the hardest part, and the failures, each with how you'd handle it.
- Measurements tied to customer impact, 2–3 tradeoffs, speaking notes and a memory hook.
Follow-ups stay consistent
When the interviewer pushes (“what if traffic is 100× higher?”), tap Scale it up. You get what breaks first and the smallest change that fixes it, consistent with the design you've already described.
Questions
- Is it only for big-tech interviews?
- No. Add the company and level to your notes, for example “Amazon SDE II”, and the assistant aims at that bar. Without them it gives a solid general design.
Walk into your next interview prepared
Build an assistant from your resume and the job description, then get speakable answers in real time. Pay by the hour, no subscription.
Keep reading
A practical system design interview framework: clarify, requirements, the one rule, APIs, architecture, failures, measurements and tradeoffs, in plain English.
Real-time help for live coding interviews: clarifying questions, brute force, the optimized approach, clean code, a walkthrough, complexity and edge cases.
RightInterview listens to your interview and suggests short, speakable answers grounded in your resume and the job description. Mac and Windows.
RightInterview vs Cluely: an interview-focused copilot with editable assistants and human support vs a general meeting assistant. Pricing and features compared.