Overview
This system was built to support real-time multiplayer gaming with low latency and high concurrency.
The backend ensures consistent game state updates while maintaining fairness and performance.
Problem
- real-time state updates
- fairness in gameplay
- concurrency handling
- high-frequency state changes
Architecture
Client (WebSocket)
↓
Gateway
↓
Game Engine
↓
Redis (State Store)
↓
Event System
↓
PostgreSQL
Key Engineering Decisions
* WebSocket Real-Time Engine
- STOMP-based messaging
- sub-100ms updates
* Redis for Ephemeral State
- fast game state updates
- high throughput
* Provably Fair RNG
- HMAC-SHA256
- commit-reveal mechanism
Scaling Strategy
- event-driven architecture
- Redis pub/sub
- horizontal scaling
Impact
- supported thousands of concurrent users
- achieved real-time responsiveness
- passed fairness validation