Batch multiple HTTP requests

Sometime when you are writing load test script you may want to call multiple endpoints at the same time parallel or want to issue batch requests.

Let's look at the following code that handles batch requests in single iteration: 

import http from "k6/http";
import { check } from "k6";

export default function () {
  const responses = http.batch([
    ["GET", "https://test.k6.io", null, { tags: { ctype: "html" } }],
    ["GET", "https://test.k6.io/style.css", null, { tags: { ctype: "css" } }],
    [
      "GET",
      "https://test.k6.io/images/logo.png",
      null,
      { tags: { ctype: "images" } },
    ],
  ]);

  check(responses[0], {
    "main page status was 200": (res) => res.status === 200,
  });
}

Now, let's run the above script: 

k6 run test.js

Let's look the output of the above script.

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