To become a skilled Java Spring Boot developer, you need to gain expertise in a range of technologies, frameworks, and best practices. Here’s a roadmap to help you navigate the key skills and concepts:

If you are getting started with Spring Boot, start by reading this blog post. It answers the basic “what?”, “how?” and “why?”

Develop a strong foundation in Core Java concepts. Focus on mastering object-oriented programming (OOP) principles, including Java syntax, data types, control structures, and exception handling.

This section introduces you to some of the concepts you should know before you start SpringBoot. Some of them are general concepts and some are related to spring framework.

• Framework
• Inversion of Control (IOC)
• Spring Framework
• Spring Beans
• Spring MVC
• Spring Webflux
• Aspect Oriented Programming (AOP)
• Spring AOP

• What is SpringBoot
• Important feature of SpringBoot
• Important feature of SpringBoot
• Bean scope
• Change server in SpringBoot tomcat, netty etc
• Important Spring Annotation

Gain expertise in building RESTful APIs with Spring Boot. Familiarize yourself with REST principles, create APIs using Spring Boot, and understand request and response formats like JSON and XML.

Gain proficiency in working with various databases. Learn to utilize Spring Data JPA for database interactions and develop a solid understanding of Hibernate, an Object-Relational Mapping (ORM) framework.

Develop web applications with Spring MVC by gaining a strong understanding of the Model-View-Controller (MVC) architecture.

Interceptors in Spring Boot are typically used to intercept and manipulate HTTP requests before, they reach the controller or responses before they are sent to the client.

Spring Boot allows you to gracefully handle errors and provide meaningful responses to clients.

Set up effective application monitoring. Use logging tools such as Logback or Log4j to track application events. Explore monitoring solutions like Datadog, Prometheus, and Grafana to gain insights into application performance and system metrics.

Maintain high code quality by mastering unit testing with JUnit and Mockito. Gain a solid understanding of integration testing in Spring Boot.

Enhance the security of your Spring Boot applications using Spring Security. Gain expertise in implementing authentication and authorization mechanisms.

• Caching
• Profiling
• Monitoring – Spring Boot Actuator

Learn about microservices architecture using SpringBoot

• Communication and Discovery
• Fault Tolerance and Resilience
• Microservice Configuration
• Load balancing
• API gateways

Implement asynchronous communication by learning Spring Messaging with JMS. Explore message-driven applications using RabbitMQ or Apache Kafka.

Gain an understanding of deployment strategies by learning containerization with Docker and exploring container orchestration with Kubernetes.

Automate the build and deployment process by implementing CI/CD pipelines with tools such as Jenkins or GitLab CI.

Dive into topics such as Spring Data Redis, Spring Batch, and Spring Cloud Stream.