Backend Engineering

What problem does this solve?

Backend systems handle business logic, data processing, scalability, and reliability.

Core Concepts

• Request lifecycle
• Sync vs async
• Stateless services
• APIs

How it works internally

Threading, event loops, request handling.

Trade-offs

• Monolith vs microservices
• Sync vs async processing

Interview Focus

• API design
• Scalability
• Fault tolerance