{
  "schema_version": 1,
  "description": "Two-replica saturated mixed production traffic for prefix-cache routing.",
  "scenarios": [
    {
      "name": "two_replica_prefix_mix",
      "duration_s": 180,
      "analysis_windows": [
        {"name": "baseline", "start_s": 20, "end_s": 55},
        {"name": "surge", "start_s": 80, "end_s": 135},
        {"name": "recovery", "start_s": 155, "end_s": 175}
      ],
      "tenants": [
        {
          "fairness_id": "cache-premium-chat",
          "priority": 100,
          "objective": "flow-control-v090-premium",
          "input_tokens": 1024,
          "output_tokens": 128,
          "phases": [
            {"start_s": 0, "duration_s": 60, "rate_pattern": "noisy_sinusoidal", "rate_center": 20, "rate_amplitude": 5, "period_s": 37, "phase_offset": 0.0, "rate_noise": 1.0, "rate_spike_probability": 0.02},
            {"start_s": 60, "duration_s": 90, "rate_pattern": "noisy_sinusoidal", "rate_center": 50, "rate_amplitude": 10, "period_s": 31, "phase_offset": 0.0, "rate_noise": 2.5, "rate_spike_probability": 0.02, "ramp_s": 10},
            {"start_s": 150, "duration_s": 30, "rate_pattern": "noisy_sinusoidal", "rate_center": 15, "rate_amplitude": 3.5, "period_s": 23, "phase_offset": 0.0, "rate_noise": 0.75}
          ]
        },
        {
          "fairness_id": "cache-gold-agentic",
          "priority": 50,
          "objective": "flow-control-v090-gold",
          "input_tokens": 4096,
          "output_tokens": 512,
          "phases": [
            {"start_s": 0, "duration_s": 60, "rate_pattern": "noisy_sinusoidal", "rate_center": 2.5, "rate_amplitude": 0.6, "period_s": 41, "phase_offset": 0.2, "rate_noise": 0.125, "rate_spike_probability": 0.02},
            {"start_s": 60, "duration_s": 90, "rate_pattern": "noisy_sinusoidal", "rate_center": 9.0, "rate_amplitude": 2.0, "period_s": 29, "phase_offset": 0.2, "rate_noise": 0.45, "rate_spike_probability": 0.02, "ramp_s": 10},
            {"start_s": 150, "duration_s": 30, "rate_pattern": "noisy_sinusoidal", "rate_center": 1.5, "rate_amplitude": 0.4, "period_s": 19, "phase_offset": 0.2, "rate_noise": 0.075}
          ]
        },
        {
          "fairness_id": "cache-standard-long",
          "priority": 0,
          "objective": "flow-control-v090-standard",
          "input_tokens": 20000,
          "output_tokens": 128,
          "phases": [
            {"start_s": 0, "duration_s": 60, "rate_pattern": "noisy_sinusoidal", "rate_center": 0.25, "rate_amplitude": 0.075, "period_s": 43, "phase_offset": 0.4, "rate_noise": 0.0125, "rate_spike_probability": 0.02},
            {"start_s": 60, "duration_s": 90, "rate_pattern": "noisy_sinusoidal", "rate_center": 1.75, "rate_amplitude": 0.4, "period_s": 33, "phase_offset": 0.4, "rate_noise": 0.0875, "rate_spike_probability": 0.02, "ramp_s": 10},
            {"start_s": 150, "duration_s": 30, "rate_pattern": "noisy_sinusoidal", "rate_center": 0.25, "rate_amplitude": 0.075, "period_s": 21, "phase_offset": 0.4, "rate_noise": 0.0125}
          ]
        },
        {
          "fairness_id": "cache-batch-long",
          "priority": -10,
          "objective": "flow-control-v090-batch",
          "input_tokens": 20000,
          "output_tokens": 128,
          "phases": [
            {"start_s": 0, "duration_s": 60, "rate_pattern": "noisy_sinusoidal", "rate_center": 1.5, "rate_amplitude": 0.4, "period_s": 47, "phase_offset": 0.6, "rate_noise": 0.075, "rate_spike_probability": 0.02},
            {"start_s": 60, "duration_s": 90, "rate_pattern": "noisy_sinusoidal", "rate_center": 3.0, "rate_amplitude": 0.7, "period_s": 35, "phase_offset": 0.6, "rate_noise": 0.15, "rate_spike_probability": 0.02, "ramp_s": 10},
            {"start_s": 150, "duration_s": 30, "rate_pattern": "noisy_sinusoidal", "rate_center": 0.5, "rate_amplitude": 0.15, "period_s": 25, "phase_offset": 0.6, "rate_noise": 0.025}
          ]
        }
      ]
    }
  ]
}