Distributed Chat Backend with Redundancy

This project is a Python-based backend designed to handle message storage in a database and ensure high availability and redundancy through communication between multiple backend instances using message queues (RabbitMQ).

⚙️ Key Features

• 💬 Stores incoming chat messages in a relational database.
• 🔁 Redundancy and synchronization across multiple backend instances.
• 🕸️ Inter-process communication using RabbitMQ.
• 🔐 Horizontally scalable architecture.
• 🚀 Ready for deployment in Docker/Kubernetes environments.

🧱 High-Level Architecture

+-----------+       +-------------+       +-----------+
| Frontend  | <---> |  Backend A  | <---> |  Backend B |
+-----------+       +-------------+       +-----------+
                        ↑   ↓                  ↑   ↓
                      [RabbitMQ] <----------> [RabbitMQ]
                        ↑   ↓                  ↑   ↓
                      [Database]            [Database]

All backend instances are synchronized via message queues, allowing for load distribution and consistency.

🚀 Installation

1. Clone the repository:

   git clone https://github.com/AbelGRubio/backend-chat.git
   cd backend-chat
   

2. Install dependencies:

   pip install -r requirements.txt
   

3. Create a .env file with the required variables (RabbitMQ, DB, etc.)

▶️ Running the App

python src

Or with FastAPI and Uvicorn:

uvicorn src.back_chat:app --host 0.0.0.0 --port 8000

🛠 Required Environment Variables

RABBITMQ_URL=amqp://user:password@rabbitmq:5672/
DATABASE_URL=postgresql://user:password@localhost:5432/chat
INSTANCE_ID=backend-a

✅ Requirements

• Python 3.12+
• RabbitMQ
• PostgreSQL (or equivalent)
• Docker (optional but recommended)

Docker

Backend Chat

🧪 Tests

Pending integration of automatic tests using pytest.

🤝 Contributing

Contributions, suggestions, and issues are welcome! Feel free to open a PR or issue.

🪪 License

This project is licensed under the MIT License.

✨ Author

Abel G. Rubio
GitHub: @AbelGRubio