"A simple site that explains system design concepts the way you wish someone explained them to you."
When I was learning system design, I struggled with overly academic explanations and scattered resources. I'd read articles that assumed I already understood distributed systems, scalability, and architecture patterns.
I wished someone would just explain things simply, with real-world analogies and clear diagrams that showed how everything connects.
So I built this. It's the resource I needed when preparing for system design interviews and building scalable applications. Now it's here for you.
I'd rather you understand 80% really well than be confused by 100% of the details.
Good analogies stick. They help you reason about new problems, not just remember facts.
A simple diagram can explain in seconds what paragraphs of text cannot.
Not a comprehensive course (there are plenty of those)
Not interactive coding exercises (use LeetCode for that)
Not behind a paywall (and never will be)
Hi! I'm Lim Hao, a developer who believes that system design should be accessible to everyone.
I created Serksa because I wished someone would explain these concepts simply, with real-world analogies and clear diagrams. This site is a collection of those explanations.
This is a side project built with love, maintained in my free time, and shared freely with the community.
If this helped you, share it with someone else who's learning. That's the best support.
If you found this valuable and want to support the project, you can buy me a coffee.
Support This ProjectThank you for being here.
Every person who learns from this site makes the effort worthwhile.