AI levelled the coding field. System design is the differentiator.
Not the theory. The instinct.
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“Design for failure.”
DSShorts · Free to play
Test your system design instinct.
Bite-sized scenarios based on real systems — DDIA, distributed databases, tail latency. No account needed to start.
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Playground
Design the architecture.
Build your system in the playground - components, wiring, constraints. The schema is where design starts.
- Real components - cache, DB, load balancer, queues
- Wire paths, replication, and fallback routes
- Problem specs with constraints baked in
Live simulation
See the system breathe.
High-level runtime metrics update as the simulation runs. Spot pressure before it becomes an outage.
- Latency, throughput, and errors at a glance
- Per-node charts when you need detail
- Still frame or looping clip - same story
End to end
Configure. Run. Inspect.
One pass through the product: tune config, start the run, open the graphs. That's the learning loop.
- Tune config, then run the simulation
- Watch metrics move in real time
- Open graphs to see exactly what shifted
Start simulating - it's free
No setup. Open a problem and run.