Backend from First Principles
Master servers, APIs, databases & system design
Core Learning Resource
This playlist focuses on understanding backend systems from fundamentals — HTTP, routing, architecture, databases, authentication, and scalability.
▶ Watch Backend PlaylistBackend Foundations
- What is a backend system?
- Client–Server architecture
- HTTP methods, status codes
- REST principles
Application Architecture
- Controllers, services, repositories
- Business logic vs infrastructure
- Middleware & request lifecycle
Data & Persistence
- Relational vs NoSQL databases
- Data modeling
- Transactions & indexing
- Basic caching concepts
Authentication & Security
- Authentication vs authorization
- Sessions & tokens (JWT)
- Input validation & error handling
Scalability & Reliability
- Logging & monitoring basics
- Handling failures
- Performance optimization
Practice Projects
- REST API for a blog
- User authentication system
- Task management backend
- Simple microservice setup