Build a High‑Performance Java Web Service Quickly with Feat Cloud

What Is Feat Cloud?

Feat Cloud is a modern Java framework designed for enterprise‑level applications. It adopts Spring Boot’s programming model but performs extensive compile‑time static analysis and optimization, resulting in higher runtime performance and lower resource consumption.

Preparing the Development Environment

Start by creating a new Maven project using your preferred IDE (e.g., IntelliJ IDEA) or by manually setting up the directory structure.

In the pom.xml file, add the Feat Cloud starter dependency:

<dependency>
    <groupId>tech.smartboot.feat</groupId>
    <artifactId>feat-cloud-starter</artifactId>
    <version>1.4.0</version>
</dependency>

Writing Your First Application

Create a class named Bootstrap.java under src/main/java with the following content:

@Controller
public class Bootstrap {
    @RequestMapping("/hello")
    public String helloWorld() {
        return "Hello, Feat Cloud!";
    }

    public static void main(String[] args) {
        FeatCloud.cloudServer().listen();
    }
}

The code performs three key actions: @Controller marks the class as a web controller. @RequestMapping("/hello") maps HTTP requests for /hello to the helloWorld() method.

The main() method starts the Feat Cloud server by calling FeatCloud.cloudServer().listen().

Running the Application

Run the Bootstrap class from your IDE or via the command line. When the console prints output similar to the snippet below, the service has started successfully:

Feat Router:
 -> /hello ==> Bootstrap@helloWorld
:: Feat :: (v1.4.0)
Technical Support:
 - Document: https://smartboot.tech
 - Github: https://github.com/smartboot/feat
🎉Congratulations, the feat startup is successful. cost: 71ms
http://0.0.0.0:8080/

This indicates the server is listening on port 8080 and the /hello path is correctly mapped.

Testing the Endpoint

Open a browser and navigate to http://localhost:8080/hello. You should see the response:

Hello, Feat Cloud!

Congratulations! You have successfully created and run your first Feat Cloud web application.