Design a persistent key-value store

Q: Design a persistent key-value store

This is a Coding & Algorithms interview question from OpenAI for Software Engineer roles. View the full question and solution on PracHub.

Q: How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

Question

Design and implement an in-memory key-value store with a 'medium' layer that serializes the store to bytes for persistence. Provide four functions: set(key, value), get(key), shutdown(), and restore(). On shutdown(), flush all data to the medium; on restore(), rebuild state from the medium. Specify: (a) the medium interface for writing/reading bytes, (b) the serialization format and handling of arbitrary values, (c) error handling and data integrity (atomic flush, crash consistency), (d) complexity and performance considerations, and (e) minimal tests and example usage.

Design a persistent key-value store

Comments (0)