// ABOUTME: k6 load test for health check endpoint baseline performance
// ABOUTME: Establishes baseline latency metrics for the simplest endpoint
//
// SPDX-License-Identifier: MIT OR Apache-2.0
// Copyright (c) 2025 Pierre Fitness Intelligence
import http from 'k6/http';
import { check, sleep } from 'k6';
import { Rate, Trend } from 'k6/metrics';
// Custom metrics
const errorRate = new Rate('errors');
const healthCheckDuration = new Trend('health_check_duration');
// Default options (can be overridden via CLI or config file)
export const options = {
stages: [
{ duration: '30s', target: 20 }, // Ramp up to 20 VUs
{ duration: '1m', target: 50 }, // Sustained load at 50 VUs
{ duration: '30s', target: 100 }, // Peak load at 100 VUs
{ duration: '30s', target: 0 }, // Ramp down
],
thresholds: {
// SLA targets
http_req_duration: ['p(95)<50', 'p(99)<100'], // 95th < 50ms, 99th < 100ms
http_req_failed: ['rate<0.01'], // < 1% error rate
errors: ['rate<0.01'],
},
};
// Configuration
const BASE_URL = __ENV.BASE_URL || 'http://localhost:8081';
export default function () {
const startTime = Date.now();
const response = http.get(`${BASE_URL}/health`, {
tags: { name: 'health_check' },
});
const duration = Date.now() - startTime;
healthCheckDuration.add(duration);
const checkResult = check(response, {
'status is 200': (r) => r.status === 200,
'has status field': (r) => {
try {
const body = JSON.parse(r.body);
return body.status !== undefined;
} catch {
return false;
}
},
'status is healthy': (r) => {
try {
const body = JSON.parse(r.body);
return body.status === 'healthy' || body.status === 'ok';
} catch {
return false;
}
},
'response time < 100ms': (r) => r.timings.duration < 100,
});
errorRate.add(!checkResult);
// Small pause between requests
sleep(0.1);
}
export function handleSummary(data) {
return {
'stdout': JSON.stringify(data, null, 2),
'load-tests/results/health_check_summary.json': JSON.stringify(data, null, 2),
};
}
