Real-Time Chat Application
Built a WebSocket-based chat platform serving 50K+ daily users with 99.9% uptime
ReactTypeScriptWebSocketRedisNode.js
Role: Lead Engineer
Duration: 4 months
Team Size: 4
TL;DR
- ✓Reduced message latency from 800ms to 45ms using optimized WebSocket connections
- ✓Scaled to 50K+ concurrent users with horizontal scaling and Redis pub/sub
- ✓Achieved 99.9% uptime over 6 months with comprehensive error handling
Impact Metrics
Message Latency
-94%
800ms → 45ms
Concurrent Users
+900%
5K → 50K