Node.js, MongoDB, Express Basics

Node.js

• JavaScript runtime environment

• Python framework

• Java application server

• C++ compiler

Event Loop

• Handles synchronous operations

• Handles asynchronous operations

• Manages memory allocation

• Controls the rendering process

Environment Variables

• Configuration settings

• User preferences

• System logs

• Network protocols

Index

• Improves query performance

• Decreases data redundancy

• Increases storage requirements

• Slows down data retrieval

MongoDB

• Relational database

• NoSQL database

• In-memory database

• Graph database

Promise

• Object representing future completion

• A legal agreement between parties

• A statement of intent

• A guarantee of performance

CORS

• Cross-Origin Resource Sharing

• Cross-Over Resource System

• Common Origin Resource Sharing

• Cross-Origin Request Security

Routing

• Defines application endpoints

• Manages database connections

• Handles user authentication

• Processes HTTP requests

JSON

• JavaScript Object Notation

• Java Source Object Notation

• JavaScript Online Notation

• Java Standard Object Notation

Node Package

• Reusable code module

• A type of database

• A web server framework

• A programming language