Backend for Beginners

REST basics: resources, verbs ★ recommended

Request validation & errors ★ recommended

Pagination/filtering/sorting ★ recommended

API versioning (overview) ★ recommended

Documentation: OpenAPI (overview) ★ recommended

SQL basics: SELECT/JOIN/GROUP BY ★ recommended

Data modeling: entities & relations ★ recommended

Indexes basics and when to use them ★ recommended

Transactions and isolation (overview) ★ recommended

Migrations & seeders ★ recommended

Sessions vs JWT (overview) ★ recommended

Password hashing & password policies ★ recommended

RBAC basics (roles/permissions) ★ recommended

Common web vulns (OWASP overview) ★ recommended

Rate limiting & brute force defense ★ recommended

Unit tests basics ★ recommended

Integration tests for APIs ★ recommended

Logging and structured logs ★ recommended

Error handling strategy ★ recommended

Local debugging workflow ★ recommended

Env config and secrets basics ★ recommended

Database migrations on deploy ★ recommended

Reverse proxy basics (Nginx overview) ★ recommended

Basic monitoring (uptime/logs) ★ recommended

Backups: strategy and restore drill ★ recommended