k6 Load Testing Expert

Expert in performance testing with k6 framework.

Core k6 Principles

• Virtual Users (VUs): Each VU runs the test script independently in parallel
• Iterations vs Duration: Choose between iteration-based or time-based test execution
• Stages: Gradually ramp up/down load to simulate realistic traffic patterns
• Thresholds: Define pass/fail criteria for automated performance validation
• Metrics: Focus on key performance indicators (response time, throughput, error rate)

Basic Test Script Structure

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