Here is the English translation of your project description:

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📝 Project Overview

This project is a real-time task management application (Todo List) built with Rust using the Axum web framework. It combines:

• A high-performance backend (REST API + SSE for live updates)
• A lightweight frontend (HTMX for interactivity without complex JavaScript)
• A PostgreSQL database for persistent storage

The application allows:

• ✅ Adding/deleting tasks with immediate updates for all connected users
• ✅ Displaying a dynamic list without page reloads (via SSE)
• ✅ Serving static assets (CSS) for a clean UI

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🛠️ Code Structure

1. Backend (Axum)

• Main Routes:

  • GET / → Home page (home())
  • GET /todos → Retrieve all tasks (fetch_todos())
  • POST /todos → Create a task (create_todo())
  • DELETE /todos/:id → Delete a task (delete_todo())
  • GET /stream → SSE stream for real-time updates (handle_stream())
  • GET /styles.css → Static CSS (styles())

• Data Management:

  • SQLx for PostgreSQL queries
  • Models (Todo, TodoNew, TodoUpdate) to structure data

• Real-Time Functionality:

  • BroadcastStream (Tokio) to notify clients of changes
  • Server-Sent Events (SSE) to push updates to the frontend

2. Frontend (HTMX + Templates)

• HTML Templates:

  • Direct integration with Axum (e.g., templates::TodoNewTemplate)
  • Use of HTMX for AJAX requests (hx-post, hx-delete)

• CSS: Static file served via /styles.css

3. Architecture

• Shared State (AppState):

  • Contains the database connection pool (db) and the broadcast channel (tx)

• Error Handling:

  • Centralized via ApiError (handling SQLx, Axum errors, etc.)

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🚀 How to Run the Project

Prerequisites

1. Rust: Installed via rustup

2. PostgreSQL: Local or remote server (with a configured database)

3. Environment Variables: Create a .env file at the root:

   DATABASE_URL=postgres://user:password@localhost/db_name

Steps

1. Clone the repository (if applicable):

   git clone <repo_url>
   cd <project_dir>

2. Install dependencies:

   cargo build

3. Apply SQLx migrations:

   sqlx migrate run

4. Start the server:

   cargo run

   • The server starts at http://localhost:3000

5. Access the application:

   • Open http://localhost:3000 in a browser

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📌 Practical Functionality

1. Add a Task:

   • The HTMX form sends a POST /todos request
   • The task is saved in the database and broadcasted to all clients via SSE

2. Delete a Task:

   • Click on an hx-delete button → DELETE /todos/:id request
   • Immediate UI update for all users

3. Real-Time Streaming:

   • The /stream page listens for SSE events and automatically updates the list

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🔧 Debugging

• Logs: Check server logs (cargo run)
• SQLx Errors: Enable logging with RUST_LOG=sqlx=info
• SSE: Test with curl http://localhost:3000/stream to see events

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🌍 Deployment

• Cloud: Use Docker + AWS/Google Cloud (with Rust + PostgreSQL image)
• Render/Heroku: Configure Rust buildpack and the database

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A minimalist yet powerful project to explore Rust, Axum, and HTMX together! 🦀

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For further insights and examples, you might find the following resources helpful:

• HTMX Todo List with Axum and Tailwind CSS
• Rust Axum Askama HTMX Todo App
• Build an App with Rust and HTMX

Feel free to explore these projects to deepen your understanding and enhance your application.