System Design Interview
guides and free resources

Behind almost every modern application, there’s a quiet system at work making sure tasks run at the right time. These tasks might be as simple as sending daily email digests...

System design interviews are no longer limited to databases, load balancers, and caching. Increasingly, companies ask candidates about designing machine learning systems, because modern products, from recommendation engines to fraud...

If you’ve ever been asked to explain the Spotify Design System in a System Design interview, you know it’s more than just streaming songs. Spotify is one of the largest...

Imagine this: you’re building an app that starts with just a handful of users. It runs smoothly, and you barely think about how the database works or how traffic is...

System Design Interviews are a crucial milestone in the career growth of any engineer, and falling short of your interviewer's expectations could get you down leveled (i.e., being offered a role that's at...

Imagine you’ve aced the coding rounds and impressed the interviewers with your algorithms, and now you’re facing the make-or-break moment of your tech interview—the System Design round. Your task? Design...