Load Testing with K6

Generate and run load tests to validate performance under stress.

What To Do

1. Install: choco install k6 or brew install k6

2. Generate test script (tests/load/api-load.js):

   javascriptCopy

   import http from 'k6/http';
   import { check, sleep } from 'k6';
   export const options = {
     stages: [
       { duration: '30s', target: 20 },
       { duration: '1m', target: 50 },
       { duration: '30s', target: 0 },
     ],
     thresholds: {
       http_req_duration: ['p(95)<200'],
       http_req_failed: ['rate<0.01'],
     },
   };
   export default function () {
     const res = http.get('http://localhost:5000/api/candidates');
     check(res, { 'status 200': (r) => r.status === 200 });
     sleep(1);
   }
   

3. Run: k6 run tests/load/api-load.js

Arguments

• <target-url>: Base URL to test
• --vus=<n>: Virtual users (default: 50)
• --duration=<time>: Test duration (default: 30s)