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Internet & Programming Foundations
Zero assumptions. How the internet, HTTP, DNS, databases, and auth actually work.
7 chapters·~2 weeks·Beginner
1
Backend Fundamentals
Node, Express, routing, middleware, CRUD, validation, error handling — done right.
10 chapters·~3 weeks·Beginner·P1 — Notes & Todo API
2
Databases Deep Dive
Postgres, MongoDB, schema design, indexes, transactions, ORMs, migrations.
10 chapters·~3 weeks·Intermediate
3
Authentication & Security
JWT, sessions, OAuth, RBAC, the OWASP top 4, secrets management, rate limiting.
9 chapters·~3 weeks·Intermediate·P2 — Complete Auth System
4
Advanced Backend Patterns
Architecture patterns, WebSockets, queues, Redis, search, microservices, events.
10 chapters·~4 weeks·Advanced·P3 · P4 — E-Commerce & Chat
5
Scaling & Production
Load balancing, replication, sharding, observability, case studies (Netflix, Uber, Stripe).
8 chapters·~3 weeks·Advanced·P5 — Scalable SaaS Backend
6
DevOps & Deployment
Linux, Docker, Compose, CI/CD, Nginx, SSL, cloud deploy, production debugging.
8 chapters·~3 weeks·Advanced·P6 — Full Deployment Pipeline
7
AI + Modern Backend
LLM APIs, embeddings, pgvector, streaming, RAG, agents — AI-aware backend in 2026.
6 chapters·~2 weeks·Expert·P7 — RAG-Powered Backend