Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt
If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a
I will be using the root user, but would suggest creating a new user
A service worker is a script that your browser runs in the background, separate from a web page, opening the door to features that don't need a web page or user interaction. Today, they already include features like push notifications and background sync. In the future, service workers might support other things like periodic sync or geofencing. The core feature discussed in this tutorial is the ability to intercept and handle network requests, including programmatically managing a cache of responses.
| #! /bin/bash | |
| # ECHO COMMAND | |
| # echo Hello World! | |
| # VARIABLES | |
| # Uppercase by convention | |
| # Letters, numbers, underscores | |
| NAME="Bob" | |
| # echo "My name is $NAME" |
| // docs: https://nodejs.org/dist/latest-v10.x/docs/api/https.html#https_https_request_url_options_callback | |
| // all methods working, but post only with x-form-urlencoded. return promise with resolved object on line 64. | |
| // extra options parameters: json=[bool], params=[object] | |
| const querystring = require('querystring') | |
| const https = require('https') | |
| const http = require('http') | |
| const cleanObject = (object, filterKeys) => Object | |
| .keys(object) | |
| .reduce((acc, key) => { |
| print("=== BEGIN ==="); | |
| use mdvoy | |
| db.dropDatabase() | |
| use mdvoy | |
| const bulkWriteArray = []; | |
| const writeCustomer = () => { |
| // https://github.com/redux-saga/redux-saga | |
| // const generator = function* () {} ✅ | |
| // const generator = ()* => {} ❌ | |
| /** | |
| * Effects - https://redux-saga.js.org/docs/api/ | |
| * - Thread managment: - Action creation - Data seeding - Flow control | |
| * call put select take | |
| * fork takeEvery | |
| * spawn takeLatest |
| import axios from 'axios' | |
| let mockingEnabled = false | |
| const mocks = {} | |
| export function addMock(url, data) { | |
| mocks[url] = data | |
| } |
| function createQuery(connection) { | |
| return function query(sql) { | |
| return connection.query(sql) | |
| } | |
| } | |
| function createOrder(query) { | |
| return function order() { | |
| query('blalblbalbbla') | |
| } |
Аутентификация(authentication, от греч. αὐθεντικός [authentikos] – реальный, подлинный; от αὐθέντης [authentes] – автор) - это процесс проверки учётных данных пользователя (логин/пароль). Проверка подлинности пользователя путём сравнения введённого им логина/пароля с данными сохранёнными в базе данных.
Авторизация(authorization — разрешение, уполномочивание) - это проверка прав пользователя на доступ к определенным ресурсам.
Например после аутентификации юзер sasha получает право обращатся и получать от ресурса "super.com/vip" некие данные. Во время обращения юзера sasha к ресурсу vip система авторизации проверит имеет ли право юзер обращатся к этому ресурсу (проще говоря переходить по неким разрешенным ссылкам)
