Quant Dev C++ Interview Question: Implement Mutex

Preparing for a coding interview? Try our SWE interview prep course: https://bit.ly/4i6qkFR Interviewed recently? Tell us about your experiences: https://www.aced.io/experiences Zack walks through how to implement a mutex in C++, a common quant developer coding interview question. He builds a blocking spin lock and explains why acquire/release memory ordering matters. He also covers how to test the lock with multiple threads. This coding interview features Zack Light: @zacklight 0:00 — Intro 0:25 — Why shared data needs a mutex 1:50 — Read-write locks 2:30 — 3 key ideas for interviews 3:15 — Spin lock implementation 7:00 — Acquire vs. release ordering 8:15 — Compiler vs. CPU reordering 8:55 — Writing test cases 10:15 — Lock guards in production Related videos: ► Quant Dev C++ Interview Question: Implement Shared Pointer: https://www.youtube.com/watch?v=-Sf_lMpppQg ► Quant Developer Mock Interview (with Coding Jesus & Zack Light): https://www.youtube.com/watch?v=-sz35Q8oXrk ► FAANG Coding Interview: Longest Substring Without Repeating Characters: https://www.youtube.com/watch?v=IPjHWQTRXa0 📩 Subscribe to Aced: https://bit.ly/aced_yt 💼 Follow us on LinkedIn: https://bit.ly/aced_li 🎵 Follow us on TikTok: https://bit.ly/aced_tiktok 📸 Follow us on Instagram: https://bit.ly/aced_ig ABOUT US We are the fastest-growing tech interview prep platform. Our courses, coaching, and community are built by people from Google, Meta, Anthropic, OpenAI, and more. Our courses cover product management, software engineering, system design, data science, and machine learning interviews — plus career coaching and a peer practice community. #coding #softwareengineering #tech #cpp #quantdev