System design practice that shows you what your decisions cost
Nodivex gives engineers a place to sketch systems, run traffic through them, and see where the design holds or breaks. No opinions — just simulation data and concrete trade-offs.
- No signup required
- Start in under 2 minutes
- Feedback from simulation data
System design is a skill, not a talent
Practice builds judgment
You get better at system design by making decisions and seeing consequences. Reading about patterns is useful, but running traffic through your own diagram is how the trade-offs become real.
Feedback should be grounded
The best feedback points to specific bottlenecks and metrics, not vague opinions. Deterministic simulation means the same inputs always produce the same signals.
Low stakes, high signal
A kata is a safe place to experiment. Try an approach, see what breaks, adjust, and re-run. There is no wrong answer — only trade-offs to understand.
Engineers who want to think in systems
From junior to senior
Whether you are preparing for interviews, transitioning from feature work to architecture, or building confidence to lead design reviews — katas give you a structured way to practise.
Repeatable practice for your team
Use katas as shared exercises in coaching sessions. The deterministic simulation gives everyone the same baseline to discuss trade-offs and compare approaches.
Brief, diagram, simulate, iterate
Every kata follows the same loop. The insights change with each run.
- 01
Read the brief
Business context, constraints, and acceptance criteria.
- 02
Sketch a system
Drop components and connect the request flow.
- 03
Run simulation
See bottlenecks, latency, and capacity limits.
- 04
Iterate
Change one thing, re-run, and compare.
Start practising system design
Open a kata, sketch a system, and let the simulation show you the trade-offs.