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Compare the architectural similarities and differences between SpringBoot and SpringCloud

Jan 24, 2024 am 09:39 AM
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Compare the architectural similarities and differences between SpringBoot and SpringCloud

Comparison of similarities and differences between Spring Cloud and Spring Boot from an architectural perspective

Spring Cloud and Spring Boot are currently the most popular microservice development frameworks in the Java field. They are both Derived from Spring Framework. Although they are both used to build enterprise-level applications, there are some differences at the architectural level. This article will compare Spring Cloud and Spring Boot from the architectural level, and illustrate their similarities and differences through specific code examples.

  1. Overall Architecture

    • Spring Boot: It is a framework for creating independent, configuration-based Spring applications. Its goal is to simplify the creation and deployment of Spring applications. Spring Boot provides rich out-of-the-box features that can be used to build independent executable Jar packages and configure embedded servers.
    • Spring Cloud: It is a framework for building distributed systems. It provides a variety of tools and components for building and managing distributed applications, such as service registration and discovery, load balancing, circuit breakers, etc. Spring Cloud is built on Spring Boot and can be tightly integrated with Spring Boot.
  2. Service Registration and Discovery

    • Spring Boot: In general, Spring Boot applications can use hard-coding to configure service addresses, or The service address is specified through configuration in the properties file. But this method is not suitable for distributed systems. In Spring Boot, we can use service registration and discovery components such as Eureka or Consul to solve this problem.
    • Spring Cloud: Spring Cloud provides a complete set of service registration and discovery solutions, including Netflix Eureka, Consul, Zookeeper, etc. By introducing the corresponding dependencies in the application, we can easily register the application to the registration center and obtain the addresses of other services through the registration center.

Specific code examples:

(1) Spring Boot application code examples using Eureka for service registration and discovery:

@SpringBootApplication
@EnableEurekaClient
public class UserServiceApplication {

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

(2) Spring Cloud application code example using Eureka for service registration and discovery:

@SpringBootApplication
@EnableDiscoveryClient
public class UserServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(UserServiceApplication.class, args);
    }
}
  1. Load Balancing

    • Spring Boot: In Spring Boot, We can achieve load balancing by introducing a client load balancer (such as Ribbon). A load balancer can evenly distribute requests to multiple instances providing the same service.
    • Spring Cloud: Spring Cloud provides a complete set of load balancing solutions, including Netflix Ribbon and Nginx. By using the corresponding dependencies in the application, we can easily achieve load balancing and improve the availability and scalability of the system.

Specific code examples:

(1) Spring Boot application code examples using Ribbon to achieve load balancing:

@Bean
@LoadBalanced
public RestTemplate restTemplate() {
    return new RestTemplate();
}

(2 ) Spring Cloud application code example using Ribbon to achieve load balancing:

@SpringBootApplication
@EnableDiscoveryClient
public class UserServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(UserServiceApplication.class, args);
    }
    
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }
}

Through the above example code, we can see that Spring Cloud pays more attention to the architectural design of distributed systems than Spring Boot, providing A complete set of microservice solutions has been developed. Spring Boot focuses more on simplifying the creation and deployment of Spring applications. In actual applications, you can choose an appropriate framework to build applications based on specific needs.

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