https://github.com/omran95/chatroom

Backend for Real-time, Highly-Scalable Chat Room App
https://github.com/omran95/chatroom

cassandra docker golang grpc kafka opentelemetry prometheus rate-limiter redis traefik websocket

Last synced: 3 months ago
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Backend for Real-time, Highly-Scalable Chat Room App

• Host: GitHub
• URL: https://github.com/omran95/chatroom
• Owner: omran95
• License: mit
• Created: 2024-06-07T22:41:46.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2024-07-05T11:59:22.000Z (6 months ago)
• Last Synced: 2024-09-27T06:43:10.596Z (3 months ago)
• Topics: cassandra, docker, golang, grpc, kafka, opentelemetry, prometheus, rate-limiter, redis, traefik, websocket
• Language: Go
• Homepage:
• Size: 640 KB
• Stars: 1
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Chatroom

![GitHub tag (latest SemVer)](https://img.shields.io/github/v/tag/omran95/chatroom?label=Version&sort=semver)

Backend for a real-time chat room app in a highly scalable architecture. 

### System architecture



### Features

- Real-time chatting using websockets.

- Services **are stateless** and can be horizontally scaled.

  - `room`: creates rooms (public/protected) and handles messages.

  - `subscriber`: maintains Kafka subscriber topics for each room in a Redis cluster.

- Traefik for efficient HTTP reverse proxying and load balancing

- gRPC for low-latency and high-throughput inter-service communication.

  - with retry (Exponential backoff with jitter), timeout, and circuit breaker.

- Graceful shutdown.

- Observability using Prometheus + Grafana for service monitoring and OpenTelemetry + Jaeger for distributed tracing.

- Pub/Sub using Kafka with partitioning for parallel processing.

- Persist messages and rooms in Cassandra, A highly available and scalable NoSQL Database with tunable consistency.

- Protect the create room API with distributed rate limiting using the Token-Bucket Algorithm with Redis.

- Broadcasting seen, typing, joining, and leaving events to all room members.