komisz

Junior Backend Developer candidate test

Intro

One of Apexlab's strategic partners, Olvasoegylet.io sent us a request for a book catalog application. They would like to have a public collection of books for their customers. You are the chosen one who may write POC (proof of concept) purely back-end (Node) JavaScript (Typescript) application which they could use to provide data for their various mobile application eg.: Book Renter.

Technical guideline

Generic

gkhays

Download File from URL

Proof-of-concept to download a file from a URL and save it locally. For example, I may wish to retrieve a JAR file from Nexus.

Uses the http package, which does the basics with raw HTTP protocol support.

Possible update: use request, it is like the Python's requests library. There is a companion package called node-request-progress that tracks download progress. See request-progress on GitHub.

Note: The request package has been deprecated.

paulfranco

Interview Questions

Node.js

Q1: What do you mean by Asynchronous API? ☆☆

Answer: All APIs of Node.js library are aynchronous that is non-blocking. It essentially means a Node.js based server never waits for a API to return data. Server moves to next API after calling it and a notification mechanism of Events of Node.js helps server to get response from the previous API call.

Source: tutorialspoint.com

productioncoder

const express = require('express');
const session = require('express-session');
const redis = require('redis');
const connectRedis = require('connect-redis');

const app = express();

// if you run behind a proxy (e.g. nginx)
// app.set('trust proxy', 1);

bradtraversy

Node.js Deployment

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

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

sobingt

var dotenv = require('dotenv');
dotenv.config();

var fs = require('fs');
var cloudinary = require('cloudinary').v2;
const http = require('http');
const uploadDir = 'uploadfiles/';
if (!fs.existsSync('uploadfiles')) {
    fs.mkdirSync('uploadfiles');
}

kunokdev

#!/bin/sh
# line endings must be \n, not \r\n !
echo "window._env_ = {" > ./env-config.js
awk -F '=' '{ print $1 ": \"" (ENVIRON[$1] ? ENVIRON[$1] : $2) "\"," }' ./.env >> ./env-config.js
echo "}" >> ./env-config.js

bradtraversy

SSH Cheat Sheet

This sheet goes along with this SSH YouTube tutorial

Login via SSH with password (LOCAL SERVER)

$ ssh brad@192.168.1.29

Create folder, file, install Apache (Just messing around)

$ mkdir test

$ cd test

lmcneel

How to remove node_modules

Create a .gitignore file

1. Check for an existing .gitignore file in the project directory

ls -a

ShvedAction

object getProp(object source, string name)
{
    var type = source.GetType();
    var prop = type.GetProperty(name);
    return prop.GetValue(source);
}