Sidecar Pattern: An Example

This section shows the Sidecar Pattern in a worked example.

Creating the Main Application

First things first, we need an application. Let's create a simple Java web application. This application will expose a RESTful API and will serve as our main application.

Here is a simple Java web service using Spring Boot:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication