Express Production Setup - 1 | Express Health Checker

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index.js

const express = require("express")
const quicker = require("./quicker")
const app = express()


app.get("/", (req, res) => {
    res.send("hello")
})
app.get("/health", (req, res) => {
    const HealthData = {
        application: quicker.getApplicatonHealth(),
        system: quicker.getSystemHealth(),
        timestemp: Date.now(),
    }
    res.json(HealthData)
})


app.listen(3000, () => console.log("app runnning on port 3000"))

quicker.js


const os = require("os")

module.exports = {
    getSystemHealth: () => {
        return {
            cpuUsge: os.loadavg(),
            totalMemory: os.totalmem() / 1024 / 1024 + "MB",
            freeMemory: os.freemem() / 1024 / 1024 + "MB",
        }
    },
    getApplicatonHealth: () => {
        return {
            uptime: os.uptime() + "seconds",
            memoryUsage: {
                heapTotal: `${process.memoryUsage().heapTotal / 1024 / 1024} MB`,
                heapUsed: `${process.memoryUsage().heapUsed / 1024 / 1024} MB`
            }
        }
    }
}

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