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4 questions in the library. A source association does not guarantee a future interview question.
Coding · Machine learning · System design
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Design a disposable email service similar to tempmail.org that allows users to instantly generate temporary email addresses, receive incoming emails, and automatically expire…
Companies: IBM, Confluent
Last reported Aug 2026
Implement a simple in-memory database that supports nested transactions using begin, commit, and rollback operations. Rollback should only revert the current transaction, while…
Companies: IBM
Last reported May 2026
Design an elevator control system for a multi-story building that efficiently manages multiple elevators, processes floor requests from both elevator cars and floor panels, and…
Companies: IBM, Google
System Design
Last reported Apr 2026