Tag: spring boot

This roadmap is designed by a Spring Boot developer with 10+ years of experience. It focuses solely on Spring Boot and related Spring ecosystem modules, divided by years of experience. Ideal for anyone preparing for Spring-based job roles. 🌟 0–1 Years Experience: Spring Boot for Freshers / Beginners 🔗 Goal: Understand the fundamentals of Spring Boot and its ecosystem. 1. Java Pre-requisites (Quick Recap) OOPs, Exception Handling, Generics Java 8+ Features (Lambdas, Streams, Functional Interfaces) 2. Spring Core Basics Inversion of Control (IoC) Dependency Injection (DI) ApplicationContext vs BeanFactory Bean Scopes and Lifecycle 3. Spring Boot Basics What is Spring Boot and its advantages Spring Boot Starter Projects Auto-Configuration application.properties vs application.yml Profiles in Spring Boot 4. Spring Boot REST API Development @RestController, @RequestMapping, @GetMapping, @PostMapping Request Parameters, Path Variables ResponseEntity and Custom Responses 5. Spring Boot Validation JSR-380 (Bean Validation API) @Valid and @Validated Custom Validation Annotations 6. Spring Boot with JPA (Spring Data JPA) Entity, Repository, CrudRepository, JpaRepository Derived Query Methods @OneToOne, @OneToMany, @ManyToOne DTO vs Entity vs Projection 7. In-Memory Databases H2 / HSQL Integration application.yml configuration 8. Basic Testing @SpringBootTest MockMvc Unit Testing with JUnit5 🔼 1–3 Years Experience: Junior Spring Boot Developer 🔗 Goal: Master CRUD APIs, layered architecture, and real-world integrations. 1. REST API Best Practices Status Codes Exception Handling using @ControllerAdvice Standardized Response Format 2. Layered Architecture Controller > Service > Repository DTO and Mapper (MapStruct or manual mapping) ModelMapper usage 3. Database & Spring Data JPA Pagination & Sorting Custom Queries (@Query, nativeQuery) Specifications / Criteria API Transaction Management (@Transactional) 4. Spring Boot Testing Mockito for mocking @WebMvcTest, @DataJpaTest Integration Testing 5. Configuration Management YAML vs Properties Profile-specific configs Environment Variables and External Configuration 6. Dev Tools & Logs Spring Boot DevTools Logging (SLF4J, Logback) Log Levels per environment 7. Swagger & Postman OpenAPI 3 with springdoc-openapi-ui Generating API docs Postman Collections for testing APIs 8. Actuator Basics Health, Metrics, Info endpoints Securing actuator endpoints 🔽 3–5 Years Experience: Mid-Level Spring Boot Developer 🔗 Goal: Build production-grade services with security, monitoring, and caching. 1. Spring Security Basic Authentication JWT (JSON Web Token) Integration OAuth2 Basics Custom Filters 2. Caching in Spring Boot @Cacheable, @CacheEvict In-memory cache with ConcurrentMap Integrate Redis or Ehcache 3. Exception Handling (Advanced) Custom Exception Hierarchy Problem Details Format (RFC 7807) 4. Spring Boot Actuator (Advanced) Custom Health Indicators Micrometer Integration Exposing custom metrics 5. API Versioning URI-based, Header-based versioning 6. File Upload / Download MultipartFile support Streaming large files 7. Async Programming @Async and AsyncConfigurer CompletableFuture with Spring 🔽 5–7 Years Experience: Senior Spring Boot Developer 🔗 Goal: Build scalable, resilient, and enterprise-ready solutions. 1. Advanced Spring Security Method-level Security Custom Authentication Provider SecurityContext Handling 2. Microservices with Spring Boot Introduction to Microservices Architecture Communication using REST + Feign Client API Gateway (Spring Cloud Gateway basics) Eureka for Service Discovery 3. Spring Cloud Config Centralized Configuration Git-backed Configuration Repo Refresh Scope and Bus 4. Observability & Monitoring Distributed Tracing with Zipkin Logging Correlation IDs Micrometer + Prometheus + Grafana 5. Resilience4j Circuit Breaker, Retry, Rate Limiter Integration with Feign Clients 6. Scheduling & Task Execution @Scheduled tasks ThreadPoolTaskScheduler 7. Advanced Testing TestContainers for Integration MockBeans CI Integration with Spring Boot Tests 🌟 7+ Years Experience: Spring Boot Architect / Expert 🔗 Goal: Design robust architectures, frameworks, and reusability layers. 1. Custom Starters Build reusable starters for internal libraries 2. Modular Monolith & Hexagonal Architecture Layer separation and port-adapter pattern 3. Spring Cloud Advanced Spring Cloud Bus, Sleuth, Config Kafka with Spring Cloud Stream 4. Reactive Programming with Spring WebFlux Mono, Flux, Reactive Repositories Backpressure handling 5. Native Compilation (Spring Boot 3 + GraalVM) Build native images Startup performance tuning 6. Advanced CI/CD Integration GitHub Actions, Jenkins Pipelines Spring Profiles for deployment 7. API Governance Shared response models, standard versioning policies API contracts with consumers 📆 Final Thoughts This roadmap is designed to help Java developers grow from freshers to Spring Boot architects by focusing purely on Spring-related technologies. Each phase builds on the previous one, ensuring solid foundations and advanced specializations in REST, microservices, and cloud-native Spring Boot development. ✅ Whether you’re just starting out or preparing for senior interviews, this Spring Boot roadmap keeps you aligned with modern enterprise requirements in 2025 and beyond.

Tag: spring boot

🚀 Spring Boot Developer Roadmap (2025 Edition): Experience-Wise Guide from Fresher to Senior

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