Minigun test for calc-server from https://github.com/yldio/wdcnz-perf-code

calc_server_load_test.js

{
  "config": {
    "target": "ws://localhost:8080",
    "phases": [
      {"duration": 120, "arrivalRate": 10}
    ]
  },
  "scenarios": [
    {
      "engine": "ws",
      "flow": [
        {"send": "1"},
        {"send": "2"},
        {"send": "+"}
      ]
    }
  ]
}