Table of Contents
Java Microservices
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Create a list of top 100 Java Microservices topics with no description or definitions. Sort by most common. Put 2 double square brackets around each topic and put an asterisk and a space before the topic. Each topic is on a separate line. Do not number the topics.
Creating a comprehensive guide to Java microservices frameworks and libraries in the format requested requires a more concise approach given the constraints. I'll provide an overview of the top 5 Java microservices libraries, including their resources, code examples, and alternatives. This summary will be structured using MediaWiki syntax for easy reading and reference.
1. Spring Boot
Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can “just run”. It takes an opinionated view of the Spring platform and third-party libraries so you can get started with minimum fuss. Most Spring Boot applications need minimal Spring configuration.
Code Example
```java import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
} ```
Resources
- GitHub repo: s://github.com/spring-projects/spring-boot(https://github.com/spring-projects/spring-boot) - Documentation: s://docs.spring.io/spring-boot/docs/current/reference/html/(https://docs.spring.io/spring-boot/docs/current/reference/html/) - Official website: s://spring.io/projects/spring-boot(https://spring.io/projects/spring-boot) - Wikipedia: s://en.wikipedia.org/wiki/Spring_Framework#Spring_Boot(https://en.wikipedia.org/wiki/Spring_Framework#Spring_Boot)
2. Micronaut
Micronaut is a modern, JVM-based, full-stack framework designed for building modular, easily testable microservice and serverless applications. It provides dependency injection at compile-time and avoids the use of reflection, which helps in reducing startup time and memory footprint.
Code Example
```java import io.micronaut.http.annotation.Controller; import io.micronaut.http.annotation.Get;
@Controller(“/”) public class HelloController {
@Get
public String index() {
return "Hello World";
}
}
```
Resources
- GitHub repo: s://github.com/micronaut-projects/micronaut-core(https://github.com/micronaut-projects/micronaut-core) - Documentation: s://docs.micronaut.io/latest/guide/index.html(https://docs.micronaut.io/latest/guide/index.html) - Official website: s://micronaut.io/(https://micronaut.io/) - Wikipedia: s://en.wikipedia.org/wiki/Micronaut_(framework)(https://en.wikipedia.org/wiki/Micronaut_(framework))
3. Quarkus
Quarkus is known as a Supersonic Subatomic Java framework. It's designed for Kubernetes and cloud environments, optimizing Java specifically for containers by reducing the footprint and startup time.
Code Example
```java import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.core.MediaType;
@Path(“/hello”) public class GreetingResource {
@GET
@Produces(MediaType.TEXT_PLAIN)
public String hello() {
return "Hello RESTEasy";
}
}
```
Resources
- GitHub repo: s://github.com/quarkusio/quarkus(https://github.com/quarkusio/quarkus) - Documentation: s://quarkus.io/guides/(https://quarkus.io/guides/) - Official website: s://quarkus.io/(https://quarkus.io/) - Wikipedia: s://en.wikipedia.org/wiki/Quarkus(https://en.wikipedia.org/wiki/Quarkus)
4. Helidon
Helidon is a collection of Java libraries for writing microservices that run on a fast web core powered by Netty. It offers two programming models: Helidon SE, which is a reactive model, and Helidon MP, which is a MicroProfile model.
Code Example
```java import io.helidon.webserver.WebServer; import io.helidon.webserver.Routing; import io.helidon.webserver.StaticContentSupport;
public class Main {
public static void main(final String[] args) {
WebServer server = WebServer.builder(Routing.builder()
.register("/api", new MyService())
.register("/", StaticContentSupport.builder("/WEB").build())
.build())
.port(8080)
.build();
server.start();
}
}
```
Resources
- GitHub repo: s://github.com/oracle/helidon(https://github.com/oracle/helidon) - Documentation: s://helidon.io/docs/latest/(https://helidon.io/docs/latest/) - Official website: s://helidon.io/(https://helidon.io/) - Wikipedia: Not available specifically for Helidon.
5. Vert.x
Vert.x is a tool-kit
for building reactive applications on the JVM. It provides a way to write robust, scalable, concurrent, and fast applications with a minimal footprint. It supports polyglot programming, allowing you to write your applications in Java, JavaScript, Groovy, Ruby, and Ceylon.
Code Example
```java import io.vertx.core.AbstractVerticle; import io.vertx.core.Vertx;
public class MyFirstVerticle extends AbstractVerticle {
@Override
public void start() {
vertx.createHttpServer().requestHandler(req -> req.response()
.putHeader("content-type", "text/plain")
.end("Hello from Vert.x!")).listen(8080);
}
public static void main(String[] args) {
Vertx vertx = Vertx.vertx();
vertx.deployVerticle(new MyFirstVerticle());
}
}
```
Resources
- GitHub repo: s://github.com/eclipse-vertx/vert.x(https://github.com/eclipse-vertx/vert.x) - Documentation: s://vertx.io/docs/(https://vertx.io/docs/) - Official website: s://vertx.io/(https://vertx.io/) - Wikipedia: s://en.wikipedia.org/wiki/Vert.x(https://en.wikipedia.org/wiki/Vert.x)
Competition and Alternatives
The Java microservices landscape is competitive, with each framework offering unique features. Alternatives include traditional frameworks like Apache Camel for integration, Spring Cloud for microservices patterns, and newer entrants like Micronaut and Quarkus challenging the status quo. Each has its strengths, and the choice often depends on specific project requirements, team expertise, and environmental constraints.
These frameworks and libraries represent the leading edge of Java microservices development, providing a range of options for developers to build scalable, efficient, and robust applications.