Node.js

Assumptions of this doc:

• You know JavaScript - this builds upon it.

1. Node.js Core Concepts

Runtime Vs Browser

Single-threaded, event-driven, async by default

Global objects

Module systems

Package Management

2. Core Modules

fs

path

os

http

event

stream

crypto

3. Project Structure & Environment

Folder Structure

env

ESLint and Prettier

4. Web Servers & APIs

Express.js Essentials

REST API Design

5. Databases

MongoDB + Mongoose

PostgreSQL MySQL + Sequelize Knex.js (SQL)

CRUD operations & models integration

6. Authentication & Security

JWT Auth

OAuth basics (Google & Facebook)

Password hashing (bcrypt)

Route protection middleware

Security

7. Async Patterns

Event loop deep dive

Promises, async await in Node context

Stream & Buffers

EventEmitter & event-driven design

8. Advanced Node Concepts

File upload & download handling

Cron jobs & task scheduling

WebSockets (Socket.io)

Clustering & horizontal scaling

Performance profiling & optimization

9. Testing

Testing

10. Architecture & Design Patterns

MVC, Service Layer, Repository

Event-driven & Observer patterns

Dependency injection - Awilix, Inversify

11. GraphQL & API Alternatives

GraphQL + Apollo Server

REST vs GraphQL

API documentation - Swagger & OpenAPI

12. Deployment & Cloud

Hosting - Heroku, Vercel, AWS, DigitalOcean

Process manager - PM2

Docker & containerization

Serverless - AWS Lambda, Vercel Functions

CI & CD pipelines- GitHub Actions, GitLab CI

13. Observability & Monitoring

Logging - Winston, Pino

Metrics & monitoring - Prometheus, Grafana

Error tracking - Sentry, Rollbar

Further Comprehensive AI Research:

Gemini Deep Research