Backend development forms the foundation of web applications. While users don't directly interact with backend systems, they're crucial for handling data, business logic, and application security.
In my experience, three key areas deserve focus when starting backend development:
1. Database Design
Understanding how to structure data efficiently is crucial. This includes choosing between SQL and NoSQL databases, designing schemas, and managing relationships between different data entities.
2. API Development
RESTful APIs serve as the bridge between frontend and backend. Learning HTTP methods, status codes, and best practices for API design will serve you well.
3. Security
Security isn't an afterthought. Authentication, authorization, and data validation should be considered from day one.