Node.js health check route

health.js

import os from "os";
import process from "process";

/* GET /api/health */
const stats = {
    status: "OK",
    system: {
        hostname: os.hostname(),
        free_memory_mb: Math.floor(os.freemem() / 1000000),
        load_avg: os.loadavg(),
        cpu_cores: os.cpus().length,
        uptime_s: Math.round(os.uptime()),
    },
    process: {
        memory_usage_mb: Math.floor(process.memoryUsage().rss / 1000000),
        uptime_s: Math.round(process.uptime()),
    },
};

res.json(stats);