Serverless Java with AWS Lambda and API Gateway

1. Introduction

Serverless architecture is a modern approach to building applications that allows developers to focus on writing code without worrying about server management. AWS Lambda and API Gateway are two powerful tools provided by Amazon Web Services to help developers build serverless applications using Java.

2. Key Concepts

3. Setup

Follow these steps to set up your development environment for building a serverless Java application.

4. Code Example

Here’s a simple example of a Java function that can be deployed on AWS Lambda.

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

public class HelloWorld implements RequestHandler {
    @Override
    public String handleRequest(Object input, Context context) {
        return "Hello, World!";
    }
}
        

This code defines a simple Lambda function that responds with "Hello, World!" when invoked.

5. Best Practices

6. FAQ