Do you have tests for Performance?

Last updated by Yazhi Chen [SSW] 3 months ago.See history

Typically, there are User Acceptance Tests that need to be written to measure the performance of your application. As a general rule of thumb, forms should load in less than 4 seconds. This can be automated with your load testing framework.

Sample Code

import http from 'k6/http';

export const options = {
  thresholds: {
    http_req_duration: ['p(100)<4000'], // 100% of requests should be below 4000ms

export default function () {

Figure: This code uses k6 to test that the MainPage loads in under 4 seconds

Sometimes, during performance load testing, it becomes necessary to simulate traffic originating from various regions to comprehensively assess system performance. This allows for a more realistic evaluation of how the application or system responds under diverse geographical conditions, reflecting the experiences of users worldwide.

Sample Code:

import http from 'k6/http';
import { check, sleep } from 'k6';

export const options = {
  vus: 25, //simulates 25 virtual users
  duration: "60s", //sets the duration of the test
  ext: { //configuring Load Impact, a cloud-based load testing service.
    loadimpact: {
      projectID: 3683064,
      name: "West US - 25 vus",
      distribution: {
        distributionLabel1: { loadZone: 'amazon:us:palo alto', percent: 34 },
        distributionLabel2: { loadZone: 'amazon:cn:hong kong', percent: 33 },
        distributionLabel3: { loadZone: 'amazon:au:sydney', percent: 33 },
  summaryTrendStats: ['avg', 'min',  'max', 'p(95)', 'p(99)', 'p(99.99)'],

export default function () {
  const baseUrl = "";
  const httpGetPages = [
    baseUrl + "/api/Leaderboard/GetLeaderboardSummary?companyCode=SSW",
    baseUrl + "/api/v2/admin/modules?companyCode=SSW"

  const token = ''; //set the token here
  const params = {
    headers: {
      'Content-Type' : 'application/json',
      Authorization: "Bearer " + token

  for (const page of httpGetPages){
    const res = http.get(page, params);
    check(res, {
      'status was 200': (r) => r.status === 200

Figure: This code uses k6 to test several endpoints by simulating traffic from different regions

run script with k6 cloud
Figure: Good example - Output the result of simulating traffic from West US to K6 Cloud

Some popular open source load testing tools are:

  • Apache JMeter - 100% Java application with built in reporting - 6.7k Stars on GitHub
  • k6 - Write load tests in javascript - 19.2k Stars on GitHub
  • NBomber - Write tests in C# - 1.8k Stars on GitHub
  • Bombardier - CLI tool for writing load tests - 3.9k stars on GitHub
  • BenchmarkDotNet - A powerful benchmarking tool - 8.8k stars on GitHub
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