📘 Spring Boot Complete Syllabus (Beginner → Advanced)

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🟢 UNIT 1: Introduction to Spring Boot

• What is Spring Framework
• Problems with traditional Spring
• What is Spring Boot
• Spring vs Spring Boot
• Advantages of Spring Boot
• Features of Spring Boot
• Auto-configuration
• Starter dependencies
• Embedded servers (Tomcat, Jetty)

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🟢 UNIT 2: Spring Boot Project Setup

• JDK installation and setup
• IDE setup (IntelliJ IDEA)
• Spring Initializr
• Creating first Spring Boot application
• Project folder structure
• Running Spring Boot application
• Understanding @SpringBootApplication

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🟢 UNIT 3: Build Tools (Maven / Gradle)

• What is a build tool
• Maven overview
• Maven project structure
• pom.xml explained
• Dependencies and plugins
• Maven lifecycle
• Difference between Maven and Gradle

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🟢 UNIT 4: Spring Boot Architecture

• Layered architecture
  • Controller layer
  • Service layer
  • Repository layer
• Package structure best practices
• Request flow in Spring Boot

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🟡 UNIT 5: Spring Boot Annotations

• @Component
• @Service
• @Repository
• @Controller
• @RestController
• @RequestMapping
• @GetMapping, @PostMapping, @PutMapping, @DeleteMapping
• @RequestBody
• @RequestParam
• @PathVariable
• @Configuration
• @Bean
• @Autowired

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🟡 UNIT 6: Dependency Injection & IoC

• Inversion of Control (IoC)
• Dependency Injection (DI)
• Types of DI
  • Field Injection
  • Setter Injection
  • Constructor Injection
• Best practices for DI
• Interview questions on DI

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🟡 UNIT 7: Configuration Management

• application.properties
• application.yml
• @Value
• @ConfigurationProperties
• Externalized configuration
• Profile-specific configuration
  • dev
  • test
  • prod
• Activating profiles

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🟡 UNIT 8: Spring Beans & Lifecycle

• What is a Spring Bean
• Bean creation process
• Bean lifecycle
• Initialization and destruction
• @PostConstruct
• @PreDestroy

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🟡 UNIT 9: Bean Scopes

• Singleton (default)
• Prototype
• Request
• Session
• @Scope annotation
• Use cases of each scope

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🔵 UNIT 10: Spring Boot Data Access (JPA)

• ORM concepts
• JPA overview
• Hibernate basics
• Entity mapping
• @Entity, @Id, @GeneratedValue
• Repository layer
• JpaRepository
• CRUD operations
• H2 / MySQL integration

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🔵 UNIT 11: RESTful Web Services

• REST architecture principles
• HTTP methods
• HTTP status codes
• DTOs
• Validation using @Valid
• Request and response handling
• Pagination and sorting (basic)

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🔵 UNIT 12: Exception Handling & Logging

• Exception handling in Spring Boot
• @ExceptionHandler
• @ControllerAdvice
• Custom exceptions
• Logging basics
• SLF4J and Logback
• Log levels

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🔴 UNIT 13: Spring Boot Security

• Security fundamentals
• Authentication vs Authorization
• Spring Security architecture
• Securing REST APIs
• Role-based access
• JWT basics (introduction)

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🔴 UNIT 14: Testing in Spring Boot

• Unit testing basics
• JUnit
• Mockito
• Mocking dependencies
• Testing controllers and services

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🔴 UNIT 15: Advanced Spring Boot Features

• Spring Boot Actuator
• Health checks
• Metrics and monitoring
• Caching
  • @EnableCaching
  • @Cacheable
• Scheduling
  • @EnableScheduling
  • @Scheduled
• Interceptors

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🔴 UNIT 16: Deployment & DevOps Basics

• Embedded Tomcat
• JAR vs WAR
• Docker basics
• Dockerizing Spring Boot application
• CI/CD overview (Jenkins)
• Cloud deployment overview
  • AWS
  • Azure
  • GCP

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⚫ UNIT 17: Microservices with Spring Boot (Advanced)

• Monolith vs Microservices
• Spring Cloud overview
• Eureka Server (Service Discovery)
• API Gateway
• Spring Cloud Config
• Inter-service communication
• Distributed tracing
  • Sleuth
  • Zipkin

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🎯 FINAL OUTCOME

After completing this syllabus, you will be ready for:

• Java Backend Developer
• Spring Boot Developer
• Java Full Stack (Backend)
• Internship and fresher roles

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