Mar 06th, 2025 | Credo Systemz | Career Insights

Introduction

In the software development field, Companies focus on building scalable, secure, and efficient backend systems. Spring Boot has emerged as the go-to framework for Java-based backend development. It is a preferred choice for developers to build enterprise-grade applications with its ease of use, powerful features, and extensive community support.

Spring Boot

Spring Boot is the widely used solid framework that simplifies the development of production-ready, reliable and scalable backend applications with minimal configuration.

key Features of Spring Boot

Easy Setup and Configuration: Spring provides a streamlined setup process and offers embedded servers to run applications without external configurations like Tomcat, Jetty, and Undertow.

• Microservices Ready: Spring Boot is ideal for building microservices architectures by integrating with Spring Cloud. It enhances microservices-based applications using features like circuit breakers, service discovery, and API gateways.
• Powerful Dependency Management: The Spring Initializr tool generates the project structure quickly. Spring Boot Starter dependencies are used to simplify dependency management.
• Built-in Security Features: Spring Security provides authentication, authorization mechanisms and supports OAuth2 and JWT.
• Database Integration: Spring Data JPA is useful for database operations as it makes it easier with minimal configurations. Spring Boot is compatible with various databases like MySQL, PostgreSQL, MongoDB, and Redis.
• Robust API Development: To create RESTful APIs, Spring boot provides an intuitive way using Spring Web MVC. It offers built-in support for JSON serialization and deserialization.
• Auto Configuration & Convention Over Configuration: Spring Boot’s auto-configuration feature reduces manual setup and handles the configuration files. So that developers can focus on business logic.
• Enhanced Monitoring and Logging: Spring Boot Actuator provides built-in monitoring endpoints and supports integration with Prometheus, Grafana, and ELK Stack.

Key Components of a Spring Boot Application

The important components of a Spring Boot Applications are:

• Spring Boot Starter Dependencies
• Spring Boot Annotations
• Embedded Servers

Spring Boot provides pre-configured dependencies called starters, such as:

• spring-boot-starter-web is suitable for building REST APIs.
• spring-boot-starter-data-jpa is used for database integration.
• spring-boot-starter-security handles authentication and authorization.

Spring Boot leverages annotations to simplify development, like:

• @SpringBootApplication – To perform the main entry point for the application.
• @RestController – Defines RESTful web services.
• @Autowired – Dependency injection in Spring Boot.

Spring Boot comes with embedded servers to eliminate the need for an external application server like,

• Tomcat
• Jetty
• Undertow.

Steps to Build a Simple Spring Boot Application

Step 1: Set Up the Project

To create a new Spring Boot project, use Spring Initializr (https://start.spring.io/) with dependencies like:

• Spring Web
• Spring Boot DevTools.

Step 2: Create a Main Application Class

Step 3: Create a Simple REST Controller

Step 4: Run the Application

Execute the following command: