Primary Key vs Secondary Key – TL;DR

In this quick dive, Hussein Nasser breaks down how primary and secondary keys differ under the hood and why picking the right one can make or break your database performance. He covers real-world use cases, indexing tips, and best practices to keep your queries lightning-fast.

Plus, he’s dropped handy links to support his work (PayPal, YouTube membership), his backend & database courses, the Backend Engineering Podcast, and even the exact mic, camera, and software gear he uses to create these videos.

Watch on YouTube