Terms of use

An educational site about system design interviews. It is free to read and use. There is no account requirement, no trial, and nothing to cancel.

It is written by one person and is not affiliated with, endorsed by, or connected to any of the companies named on it. Company names are used to describe the style of their interviews, which is commentary, not a partnership.

This site will not get you a job. It is study material, written from published sources and experience, and it can be wrong or out of date. Interviews vary by company, team and interviewer.

The content is provided as-is, without warranty. Do not rely on it for production engineering decisions without checking the primary sources — every topic page links to them for exactly that reason.

Read it, learn from it, quote a paragraph with a link back. That is all fine and welcome.

Republishing pages wholesale, or feeding the site into a scraper to rebuild it somewhere else, is not. The writing is original work and remains the property of its author.

If you sign in, keep your Google account secure — anyone with it can reach your progress. Do not paste confidential or employer-owned material into the answer boxes; they are stored, as the privacy policy explains.

An account can be deleted on request at sahdevsinhpalaniya98@gmail.com. Accounts that are used to abuse the site may be removed without notice.

These terms may change as the site grows. Material changes will be reflected in the date at the top of this page rather than applied quietly.