Varta: The Ultimate Chat App Backend

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Architecture Overview

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Features

1. Users can crud private or public groups.
2. Room owners can invite other users to their private rooms.
3. Users can send and receive messages in real time.
4. End to End encrypted messages

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Technology Stack

1. Multiple EC2 instances to support a stateless architecture.
2. Redis Pub/Sub for instant real-time message delivery across multiple EC2 instances.
3. Kafka for handling database-level message creation and event streaming.
4. Task workers for managing background jobs with RabbitMq such as push notifications, email services, and database updates.
5. PostgreSQL as the ultimate source of truth.
6. Caching layer for blazing-fast API responses and optimized database queries.
7. Rate limiter to safeguard APIs and server resources.
8. Centralized logging for improved monitoring and debugging of the entire application.

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Upcoming Features (November Release)

1. React frontend for a modern and responsive user interface.
2. Video streaming and calling support.

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Setup Instructions

Install Packages

Run the following command to install dependencies:

uv sync

Project Setup

Refer to the .env.example file and create your own .env file locally to configure environment variables for a successful project setup.

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