🚀 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.

📚 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

✅ 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

🔗 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/

🐳 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

Spring

Install / Use

README