Microservice Healthcheck Snippet

code (typescript) 23 hours ago · 33 lines · 19 views

import http from 'node:http';

interface HealthResponse {
  status: 'healthy' | 'degraded' | 'unhealthy';
  uptimeSeconds: number;
  memoryUsageMb: number;
  timestamp: string;
}

export function getSystemHealth(): HealthResponse {
  const memory = process.memoryUsage();
  return {
    status: 'healthy',
    uptimeSeconds: Math.floor(process.uptime()),
    memoryUsageMb: Math.round(memory.heapUsed / 1024 / 1024),
    timestamp: new Date().toISOString(),
  };
}

const server = http.createServer((req, res) => {
  if (req.url === '/healthz' && req.method === 'GET') {
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify(getSystemHealth(), null, 2));
    return;
  }

  res.writeHead(404, { 'Content-Type': 'application/json' });
  res.end(JSON.stringify({ error: 'Not Found' }));
});

server.listen(3000, () => {
  console.log('Healthcheck service ready on port 3000');
});

1import http from 'node:http';

3interface HealthResponse {

4 status: 'healthy' | 'degraded' | 'unhealthy';

5 uptimeSeconds: number;

6 memoryUsageMb: number;

7 timestamp: string;

10export function getSystemHealth(): HealthResponse {

11 const memory = process.memoryUsage();

12 return {

13 status: 'healthy',

14 uptimeSeconds: Math.floor(process.uptime()),

15 memoryUsageMb: Math.round(memory.heapUsed / 1024 / 1024),

16 timestamp: new Date().toISOString(),

17 };

18}

20const server = http.createServer((req, res) => {

21 if (req.url === '/healthz' && req.method === 'GET') {

22 res.writeHead(200, { 'Content-Type': 'application/json' });

23 res.end(JSON.stringify(getSystemHealth(), null, 2));

24 return;

25 }

27 res.writeHead(404, { 'Content-Type': 'application/json' });

28 res.end(JSON.stringify({ error: 'Not Found' }));

29});

31server.listen(3000, () => {

32 console.log('Healthcheck service ready on port 3000');

33});

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