Simulation run on this device. Scenario values are not sent anywhere — the engine is fully local.
system design game · free
HTTP Protocol Waterfall Race
Waterfall the same page over 1.1/2/3 and count the round trips.
What does HTTP/2 multiplexing actually save on 30 assets?
Engine 1.0.0 · game
ms
1200
ms
10500
ms
102000
ms
55000
- Total
- 370 ms
- Dominant phase
- Body (150 ms)
- Connection share
- 27%
- Server+body share
- 73%
Optimize Body first — it owns the waterfall.
dns 20 → tcp 80 → ttfb 120 → body 150 = 370ms
Method
- Deterministic local model of the mechanism — knobs recompute outputs instantly with no network.
- Numbers are teaching approximations, not production capacity guarantees.