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Difference between Spring Boot and the Spring Framework

Spring Boot and the Spring Framework are both part of the larger Spring ecosystem, which is a popular framework for building Java applications. While they are related and often used together, they serve different purposes and have distinct features. Here’s a detailed comparison of Spring Boot and the Spring Framework:

Spring Framework

Spring Framework is a comprehensive framework for building enterprise-level Java applications. It provides a wide range of features, including dependency injection, transaction management, aspect-oriented programming, and more.

Key Features:

  1. Dependency Injection (DI): Core to the Spring Framework, DI allows for loose coupling between components.
  2. Aspect-Oriented Programming (AOP): Supports separating cross-cutting concerns (e.g., logging, security) from business logic.
  3. Transaction Management: Provides a consistent programming model for transaction management.
  4. MVC Framework: Supports building web applications using the Model-View-Controller (MVC) pattern.
  5. Data Access: Provides integration with various data access technologies, including JDBC, JPA, Hibernate, and more.
  6. Security: Offers a comprehensive security framework through Spring Security.
  7. Integration: Supports integration with various enterprise services like messaging (JMS), email, and more.

Example Code:

@Configuration
public class AppConfig {

    @Bean
    public MyService myService() {
        return new MyServiceImpl();
    }
}

@Service
public class MyServiceImpl implements MyService {
    // Service logic
}

Spring Boot

Spring Boot is an extension of the Spring Framework that simplifies the development of Spring-based applications. It provides a set of conventions and tools to make application setup and deployment more straightforward, reducing boilerplate code and configuration.

Key Features:

  1. Auto-Configuration: Automatically configures Spring applications based on the dependencies present on the classpath.
  2. Starter POMs: Provides a set of starter POMs (Project Object Models) that include commonly used dependencies for different types of applications.
  3. Embedded Servers: Includes embedded servers (e.g., Tomcat, Jetty) so applications can run independently without requiring a separate server installation.
  4. Production-Ready Features: Offers features like health checks, metrics, and externalized configuration for production environments.
  5. Opinionated Defaults: Provides sensible default configurations to streamline development, which can be customized as needed.

Example Code:

@SpringBootApplication
public class MySpringBootApplication {

    public static void main(String[] args) {
        SpringApplication.run(MySpringBootApplication.class, args);
    }
}

@RestController
public class MyController {

    @GetMapping("/hello")
    public String hello() {
        return "Hello, World!";
    }
}

Comparison

1. Configuration

2. Startup Time

3. Ease of Use

4. Application Deployment

5. Microservices Support

When to Use Each

Published on: Jul 04, 2024, 11:33 AM  
 

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