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fanout

Simulation run on this device. Scenario values are not sent anywhere — the engine is fully local.

system design game · free

Load Balancer Algorithm Race

Race balancing algorithms against a mixed workload and read the queue depth.

Round-robin or least-connections under uneven request costs?

Engine 1.0.0 · game
8
%
080
1
1010000
Algorithm
least-conn
Hot backend RPS
149.4
Cold backend RPS
100.6
Imbalance index
19.5%

Load-aware pick reduces hot-spot pressure.

8 backends, skew 30%

Method

  • Deterministic local model of the mechanism — knobs recompute outputs instantly with no network.
  • Numbers are teaching approximations, not production capacity guarantees.

Sources

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