codefarm
Back to Backend Engineer
🌱
Phase 3

Spring Boot Essentials

REST APIs, dependency injection, validation, configuration, and testing with Spring Boot.

1

Spring Core and Dependency Injection: The IoC Container Explained

A staff-engineer guide to Spring's IoC container, bean lifecycle, scopes, and dependency injection patterns for production services.

backend-engineerspring-coreioc
2

REST APIs and Controllers in Spring Boot: Production Patterns

A staff-engineer guide to building REST APIs with Spring MVC — routing, request binding, ResponseEntity, status codes, and content negotiation.

backend-engineerrestcontrollers
3

Validation and Exception Handling in Spring Boot

A staff-engineer guide to Bean Validation, global exception handlers, and RFC 7807 ProblemDetail for consistent Spring Boot error responses.

backend-engineervalidationexception-handler
4

Configuration and Profiles in Spring Boot

A staff-engineer guide to externalized configuration, @ConfigurationProperties, environment profiles, and secrets handling in Spring Boot.

backend-engineerprofilesyaml
5

Testing Spring Boot Apps: JUnit 5, Mockito, and Test Slices

A staff-engineer guide to JUnit 5, Mockito mocking, Spring Boot test slices, and Testcontainers for reliable, fast Spring Boot test suites.

backend-engineerjunitmockito