carlssonk

Coding problems w/ solutions

Most of these questions are taken from bigfrontend.dev. A great website for practicing JavaScript and preparing for frontend interviews.

1. Implement curry()

function curry(fn) {
  return function curryInner(...args) {
    if (args.length >= fn.length) return fn(...args);
    return (...args2) => curryInner(...args, ...args2);
  };

carlssonk

Minimal viable Nginx Configuration on how a reverse proxy for WebSockets might look like.

For WebSocket

location /websocket/ {
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_pass http://localhost:4000; #Change 4000 to whatever port your app runs on.
}

carlssonk

Deploy Node.js Application to DigitalOcean

This step by step tutorial will show you how to set up a Node.js server with MongoDB to DigitalOcean using PM2, NGINX as reverse proxy and a SSL from LetsEncrypt. We will also add a custom domain name.

Prerequisites

• Download PuTTY & PuTTYgen
• Download WinSCP
• Have your application on a GitHub repo.

Create Droplet & Generate SSH Key