Fortune Teller Service with Server-Sent Events (SSE)

This is a simple Fortune Teller Service built with Spring Boot that demonstrates how to use Server-Sent Events (SSE) to notify clients about their future predictions asynchronously. The Fortune Teller Service allows clients to request their future predictions by providing their names. The service processes the request asynchronously using the @Async method, and once the prediction is ready, it notifies the client via SSE.

Features

• Request future predictions by providing your name.
• Asynchronous processing of future predictions using @Async method.
• Server notifies the client via Server-Sent Events (SSE) once the prediction is ready.
• Real-time updates on the client-side without manual refreshing.

Technologies Used

• Java 8+
• Spring Boot 2.x
• Maven (for Spring Boot project)

Getting Started

Prerequisites

Make sure you have the following installed on your system:

• Java Development Kit (JDK) 8 or higher
• Maven

How to Run the Application

1. Clone the repository:

   git clone git@github.com:datmt/spring-boot-angular-sse.git
   cd spring-boot-angular-sse
   

To receive the prediction once it's ready, connect to the SSE endpoint:

const eventSource = new EventSource('http://localhost:8080/subscribe');

eventSource.onmessage = event => {
const prediction = event.data;
console.log('Received Prediction:', prediction);
// Handle the prediction as needed on the client-side
};

eventSource.onerror = error => {
console.error('Error with SSE connection:', error);
eventSource.close();
};