In this episode of The Backend Engineering Show, Hussein Nasser peels back the curtain on page faults—those kernel traps that bring in missing memory pages on first access, stack growth, copy-on-write, swapping, file-backed mappings and even permission hiccups. Along the way he gives you a quick virtual-memory refresher (abstraction, sharing, NUMA) and a tour of VMA regions (text, data, BSS, heap, stack) before diving into each fault type step by step.
If you find yourself craving more OS and backend wisdom, stick around after the 45-minute mark for links to his Fundamentals of OS course, plus discounts on everything from Node.js internals and networking to database engineering, NGINX, Python on the backend and beyond.
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