📡 Axum SSE Broadcast Server

This project is a lightweight real-time messaging server built with Axum, using Server-Sent Events (SSE) and topic-based broadcasting. It allows clients to subscribe to specific topics and receive live messages pushed from the server.

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🚀 Features

• 🔄 Real-time streaming via Server-Sent Events (SSE)
• 📨 Topic-based broadcasting using tokio::broadcast
• 🧵 Thread-safe shared state with Arc<Mutex<...>>
• ⚡ Built with async Rust using tokio and axum

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📁 Project Structure

AppState

struct AppState {
    topics: Arc<Mutex<HashMap<String, broadcast::Sender<BroadcastMessage>>>>,
}