Load Test Script

Generate load testing scripts (k6, Artillery, or JMeter)

Generate load testing scripts for performance testing.

Instructions

1. Using k6 (recommended):

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

export const options = {
  stages: [
    { duration: '30s', target: 20 },    // ramp up to 20 users
    { duration: '1m', target: 20 },     // hold at 20 users
    { duration: '30s', target: 100 },   // spike to 100
    { duration: '1m', target: 100 },    // hold at 100
    { duration: '30s', target: 0 },     // ramp down
  ],
  thresholds: {
    http_req_duration: ['p(95)<500'],   // 95% of requests < 500ms
    http_req_failed: ['rate<0.01'],     // < 1% failure rate
  },
};

export default function () {
  const res = http.get('https://api.example.com/users');
  check(res, {
    'status is 200': (r) => r.status === 200,
    'response time < 500ms': (r) => r.timings.duration < 500,
  });
  sleep(1);  // think time between requests
}

2. Run:

k6 run load-test.js

3. Key metrics to watch:
   • p95 response time: should be < your SLA
   • Error rate: should be < 1%
   • Throughput (req/s): matches expected peak traffic

Rules

• Test against a staging environment, never production
• Include think time (sleep) to simulate real users
• Test with realistic payloads, not just GETs