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.

What difficulty level is this interview question?

This is a Medium difficulty Coding & Algorithms question, commonly asked during Technical Screen rounds at OpenAI.

What role is this question designed for?

This question is commonly asked for Software Engineer candidates at OpenAI during technical interviews.

Implement persistent key-value store

Last updated: Mar 29, 2026

Quick Overview

This question evaluates competency in implementing an in-memory key-value store with persistence, covering concepts such as serialization, durability, data structure management, and basic I/O handling.

Medium
OpenAI
Coding & Algorithms
Software Engineer

OpenAI

Aug 4, 2025, 10:55 AM

Software Engineer

Technical Screen

Coding & Algorithms

Question

Design and implement an in-memory key-value store supporting set(key, value), get(key), shutdown() that flushes all data as bytes to a medium, and restore() that reloads the data from the medium.

Comments (0)

Loading comments...

Browse More Questions

More Coding & Algorithms•More OpenAI•More Software Engineer•OpenAI Software Engineer•OpenAI Coding & Algorithms•Software Engineer Coding & Algorithms