Web and HTTP Fundamentals
Understanding HTTP properly prevents many API and frontend bugs.
Core topics
- Request and response lifecycle
- HTTP methods (
GET,POST,PUT,PATCH,DELETE) - Status codes (
2xx,4xx,5xx) - Headers and content types
- Cookies, sessions, and tokens
- CORS basics
- Idempotency and safe retries
Why this matters
- You design better APIs.
- You debug frontend-backend issues faster.
- You avoid common authentication mistakes.