The cloud has become the new normal for many businesses and organizations. It’s cost-effective, scalable, and provides a number of other benefits. But it can also be complex, with a lot of moving parts.
One way to make developing distributed systems on the cloud easier is to use Spring Boot and Spring Cloud. In this article, we’ll take a look at what these two frameworks are and how they can be used together.
Spring Boot is a framework that helps you create stand-alone, production-grade Spring-based applications. It’s designed to get you up and running as quickly as possible, with minimal configuration.
Spring Boot comes with a number of features, including:
Spring Boot makes it easy to create Spring-powered applications and services. It takes an opinionated view of the Spring platform and gets you up and running with the minimum of configuration.
Spring Cloud is a set of tools for building cloud-native applications. It provides a number of features, including:
Spring Cloud helps you build cloud-native applications that are scalable, resilient, and manage themselves.
Spring Boot and Spring Cloud work well together. Spring Boot makes it easy to create stand-alone, production-grade Spring-based applications, and Spring Cloud makes it easy to build and deploy microservices.
Here’s a simple example of a microservice built with Spring Boot and Spring Cloud.
@SpringBootApplication
@EnableDiscoveryClient
public class MyService {
@Autowired
private DiscoveryClient discoveryClient;
@RequestMapping("/")
public String home() {
return "Hello from MyService";
}
@RequestMapping("/service-instances/{applicationName}")
public List<ServiceInstance> serviceInstancesByApplicationName(
@PathVariable String applicationName) {
return this.discoveryClient.getInstances(applicationName);
}
}
This microservice registers itself with a Spring Cloud DiscoveryClient, which allows it to be discovered by other services. It also exposes two REST endpoints: one for returning a simple greeting, and one for returning a list of ServiceInstances for a given application name.
To run this microservice, you can use the Spring Boot Maven plugin:
$ mvn spring-boot:run
You can then access the microservice at http://localhost:8080.
##Conclusion
In this article, we’ve looked at what Spring Boot and Spring Cloud are and how they can be used together. We’ve also seen a simple example of a microservice built with these two frameworks.
If you’re looking for a way to simplify developing distributed systems on the cloud, then Spring Boot and Spring Cloud are worth checking out.