System Design Lab
Interactive execution environments for distributed systems, database internals, and architecture patterns. All labs run client-side via WASM.
How to use this
This is the first version of the lab, so the course map will keep growing with more lessons, more interactive exercises, and better interview-style drills. The easiest way to study here is simple: pick one module, read the notes first, run the lab, and tick the lesson only after you’ve understood the idea, not just the answer. Come back later to compare how your thinking changes as the platform expands.
What's next
Actually drawable interfaces
You'll be able to sketch and practice on real diagrams, not just read the explanation. That makes the design flow feel much closer to an actual interview.
Better lessons and more exercises
We're adding more lessons, more hands-on exercises, interview simulations, and actual compiler-based exercises as the platform grows.
Available Modules
01. Low Level Design
Explore OOP internals and design principles through engine-driven lessons that connect memory layout, contracts, and refactoring.
02. Databases
A single curriculum for persistence, transactions, isolation, and scaling. The course opens with why databases exist, then walks through relational basics, ACID, and the path to replication and sharding.