🚀 Master Spring 7, Spring Boot 4, REST, JPA, Spring Security

Master Spring 7, Spring Boot 4, REST, JPA, Spring Security is a complete backend-focused course designed to help you become a production-ready Java Backend Engineer.
You will learn how to design and build real-world web applications and REST APIs using Spring Framework, Spring Boot, Spring Data JPA, and Spring Security — from fundamentals to deployment.

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📚 Course Curriculum Overview

🚀 Section 1 — Spring Core & Maven: The Fast-Track Foundation

Start with the backbone of Spring development:

• Why Core Java alone is not enough for modern backend apps
• Maven fundamentals and dependency management
• IoC, Dependency Injection, Beans & ApplicationContext
• Creating beans using @Bean and @Configuration

👉 Understand how Spring really works internally.

🧩 Section 2 — Spring Beans Deep Dive

Move beyond basics into advanced bean management:

• Autowiring strategies, @Primary, @Qualifier
• Bean scopes (Singleton, Prototype)
• Lifecycle hooks with @PostConstruct & @PreDestroy
• Constructor vs Setter vs Field injection
• Programmatic bean registration

👉 Learn to solve real problems like NoUniqueBeanDefinitionException.

🌐 Section 3 — Mastering Spring Boot REST API Development

Build professional REST APIs:

• @RestController, @SpringBootApplication, Auto-Configuration
• Request handling (@PathVariable, @RequestBody, Headers, Params)
• API Versioning strategies
• RequestEntity & ResponseEntity
• HTTP fundamentals & best practices

👉 Build APIs like production systems.

⚙️ Section 4 — Spring Boot Essentials

Improve project structure and developer experience:

• Clean package architecture
• Spring Boot DevTools
• H2 Database setup & data loading
• Better logging & development workflow

🗄️ Section 5 — Spring Data JPA

Learn database interaction the modern way:

• ORM fundamentals
• Entities, Repositories & DTO pattern
• Lombok usage
• Derived queries & data mapping
• CORS handling

👉 Stop writing boilerplate SQL.

🐳 Section 6 — Databases with Docker

Move from local DB to containerized environments:

• Docker fundamentals for backend developers
• Running MySQL with Docker
• Docker Compose with Spring Boot
• Persistent volumes & configuration

🛠️ Section 7 — Building Real Backend Features

Hands-on feature development:

• Contact API implementation
• Hibernate schema generation
• End-to-end API testing with UI

🧠 Section 8 — Essential Backend Skills

Learn production-ready practices:

• Global exception handling
• Backend validations
• JPA Auditing
• OpenAPI / Swagger documentation
• Web scopes (Request, Session, Application)

🔗 Section 9 — Mastering JPA Relationships

Deep dive into entity mappings:

• OneToMany & ManyToOne relationships
• Fetch vs Cascade explained clearly
• Deletion strategies
• Real-world relationship modelling

🔐 Section 10 — Spring Security Essentials

Understand how Spring Security behaves internally:

• Default security behavior
• Custom configurations
• CORS setup
• Internal authentication flow explained

🔑 Section 11 — Authentication: From Passwords to JWT

Modern backend authentication:

• Hashing vs Encryption vs Encoding
• Password encoders
• JWT token generation & validation
• Custom filters for authentication flow

🛡️ Section 12 — Database Authentication & CSRF Protection

Build secure real-world login systems:

• Users & Roles design
• Custom AuthenticationProvider
• Derived queries for validation
• CSRF attack theory & implementation

📊 Section 13 — Logging in Spring Boot

Design production-grade logging:

• Logback configuration
• Structured logging strategies
• Debugging and monitoring techniques

🔄 Section 14 — Aspect-Oriented Programming (AOP)

Handle cross-cutting concerns:

• Aspect, Advice & Pointcuts
• @Around, @Before, @AfterReturning, @AfterThrowing
• Performance logging and centralized exception handling

🚀 Section 15 — Advanced Queries in Spring Data JPA

Improve database performance:

• JPQL & Native Queries
• Named Queries
• Solving N+1 problems
• Batch fetching strategies

🔒 Section 16 — Authorization, Sorting & Pagination

Enhance API security & data handling:

• Roles vs Authorities
• Securing APIs
• Sorting & Pagination implementation

💼 Section 17 — Mastering Transactions

Understand real transaction behavior:

• @Transactional internals
• Propagation & Isolation levels
• Rollback rules
• Production pitfalls

⚡ Section 18 — Spring Cache & Performance Optimization

Make APIs faster:

• @Cacheable, @CachePut, @CacheEvict
• TTL-based caching
• Caffeine integration

👤 Section 19 — Real Feature Development

Build advanced backend workflows:

• User profile management
• Resume uploads
• Job bookmarking & application APIs
• ManyToMany best practices

🌍 Section 20 — Configuration & Profiles

Master environment-based backend setups:

• @ConfigurationProperties
• Externalized configuration
• Profiles for DEV/QA/PROD
• Conditional bean creation

📡 Section 21 — Production-Ready Observability

Monitor backend systems like industry experts:

• Spring Boot Actuator
• Metrics, logs & tracing
• OpenTelemetry & Micrometer

🔗 Section 22 — Consuming REST APIs

Learn how backend services communicate:

• RestClient usage
• HTTP Service Client
• Service grouping strategies

☁️ Section 23 — Deploying to AWS

Take your backend to the cloud:

• AWS RDS setup
• Elastic Beanstalk deployment
• Production configuration

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✅ Pre-requisites

• Good understanding of Core Java
• Basic understanding of HTML, CSS, and Web Apps (not mandatory)
• Willingness to Learn and Break Things
• A laptop

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🔗 Important Links

• Spring Initializer — https://start.spring.io/
• Spring Website — https://spring.io/
• Spring Projects — https://spring.io/projects
• Lombok — https://projectlombok.org/
• Docker — https://www.docker.com/
• Docker Hub — https://hub.docker.com/
• AWS — https://aws.amazon.com/
• AWS Elastic Beanstalk — https://aws.amazon.com/elasticbeanstalk/

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🐳 Docker Command — Create MySQL Database

docker run -p 3306:3306 \
--name=jobportaldb \
-e MYSQL_ROOT_PASSWORD=root \
-e MYSQL_DATABASE=jobportal \
-v /Users/eazybytes/Desktop/jobportal-data:/var/lib/mysql \
-d mysql