Spring Boot Tutorial

Introduction to Spring Boot

• Java framework to create and run applications.
• Simplifies configuration and setup.
• Focuses on writing code rather than configuration.
• Suitable for both beginners and professionals.

Purpose of Spring Boot

• Rapid Application Development (RAD).
• Enhances the Spring Framework with embedded servers.
• Reduces development, testing, and configuration time.

Prerequisites

• Java syntax knowledge (classes, objects, inheritance, etc.).
• Basic understanding of the Spring framework.
• Familiarity with web technologies and build tools (Maven/Gradle).

Key Topics in Spring Boot

Basics

• Introduction and advantages.
• Differences from Spring and Spring MVC.

Software Setup and Configuration

• IDE setups: STS, Eclipse, IntelliJ.

Core Concepts

• Architecture, annotations, and best practices.
• Code structure and dynamic components.
• Transaction Management and Validation.

REST API Integration

• Creating REST APIs using Spring Boot.
• Using JSON with Jackson for API implementation.
• Examples of RESTful services.

Database and Data JPA

• Integration with databases (H2, MySQL, MongoDB, etc.).
• Use of JpaRepository and CrudRepository.
• CRUD operations and database connectivity.

Microservices

• Sample projects for microservices.
• Communication between microservices.

Kafka Integration

• Producing and consuming messages using Kafka.
• Topic creation and message compression.

Aspect-Oriented Programming (AOP)

• Implementing AOP with Spring Boot.
• Differences between AOP and OOP.

Testing

• Unit testing with Mockito and JUnit.
• MockMVC testing.

Features and Advantages

• Web development capabilities.
• Admin features and application events.
• Externalized configuration support (YAML, properties files).
• Simplified logging and security.
• Command-line utility for application testing.

Limitations

• Initial complexity for beginners.
• Higher memory usage and startup time.
• Limited customization options.
• Complexity in managing multiple microservices.

Conclusion

• Mastery of Spring Boot essentials for scalable applications.
• Encouragement to explore the Spring Boot ecosystem.
• Application of learned skills to real-world projects.

Frequently Asked Questions (FAQs)

1. What is Spring Boot?

   • An enhancement of the Spring framework for faster web app development.

2. Skills for a Spring Boot Developer:

   • Problem-solving, extensive knowledge of Spring Boot and Java.

3. Uses of Spring Boot:

   • Simplifies development of web applications and microservices.

4. Spring Boot Initializer:

   • A tool to generate project structure for Spring Boot.

5. Salary Expectations in India:

   • Ranges from 2.3 to 12.0 Lakhs, average 4.3 Lakhs annually.