Piyush Garg piyushgarg-dev

Kafka

Knowledge
- Node.JS Intermediate level
- Experience with designing distributed systems
Tools
- Node.js: Download Node.JS
- Docker: Download Docker
- VsCode: Download VSCode

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

Create free AWS Account at https://aws.amazon.com/

I would be creating a t2.medium ubuntu machine for this demo.

Update Packages

sudo apt-get update

Install Nginx

	type TPromiseResolve<T> = (value: T) => void;
	type TPromiseReject<T> = (reason: T) => void;

	type TPromiseExecutor<T, K> = (
	resolve: TPromiseResolve<T>,
	reject: TPromiseReject<K>
	) => void;

	type TPromiseThenCallback<T> = (value: T \| undefined) => void;
	type TPromiseCatchCallback<T> = (reason: T \| undefined) => void;

	CREATE TABLE log_events (
	event_id UUID,
	timestamp DateTime MATERIALIZED now(),
	deployment_id Nullable(String),
	log String,
	metadata Nullable(String)
	)
	ENGINE=MergeTree PARTITION BY toYYYYMM(timestamp)
	ORDER BY (timestamp);

	FROM ubuntu

	RUN apt-get update
	RUN apt-get install -y curl
	RUN curl -sL https://deb.nodesource.com/setup_18.x \| bash -
	RUN apt-get upgrade -y
	RUN apt-get install -y nodejs

	COPY package.json package.json
	COPY package-lock.json package-lock.json

	buyButton.addEventListener('click', async (event) => {

	const response = await fetch('/order', {
	method: 'POST',
	headers: {
	'Content-Type': 'application/json'
	},
	body: JSON.stringify({ amount: 500 }) // Rs.500
	});

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Razorpay</title>
	</head>
	<body>
	<div>

	const { request, response } = require('express');
	const express = require('express');
	const Razorpay = require('razorpay');

	const app = express();

	const PORT = 8000;

	app.use(express.static('./public'));
	app.use(express.json());