Add Health Check & Metrics Endpoint

Express.js

Node.js

Technical Specification

Add GET /health and GET /metrics endpoints for monitoring status and basic stats (uptime, request count).

Input/Output Samples

Input:GET /metrics

Output:{ uptime: 123.4, requests: 42 }

Optimal Logic Path

let requestCount = 0;
app.use((req, res, next) => {
  requestCount++;
  next();
});

app.get("/health", (req, res) => {
  res.json({ status: "ok" });
});

app.get("/metrics", (req, res) => {
  res.json({
    uptime: process.uptime(),
    requests: requestCount,
  });
});

Architectural Deep-Dive

Health and metrics endpoints are standard for checking service health and traffic.