TL;DR: Hussein Nasser just dropped a deep-dive on Sync vs Async IO (watch it on YouTube), unpacking how operating systems and Node.js handle blocking vs non-blocking calls. It’s part of his broader Backend Engineering series, so expect clear, no-fluff explanations.
He’s also serving up a buffet of courses and goodies: Fundamentals of OS, Node.js Internals, Backend Troubleshooting, Networking, Database Engineering, NGINX, Python on the backend, plus a podcast, YouTube membership perks (members-only videos), and even affiliate tools for slides and thumbnails. Whether you’re a backend newbie or a seasoned dev, there’s a link waiting for you.
Watch on YouTube
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