Real-Time Event Loop Platform
Architected a low-latency, real-time message broadcasting and event coordination platform on AWS with serverless WebSocket routing and Redis state cache.
The Problem
Handling millions of concurrent live event subscribers required sub-10ms connection routing, highly scalable serverless runtimes, and real-time session tracking without heavy state servers.
The Challenge
- Handling dynamic connection bursts during live event triggers without hitting cold-start bottlenecks.
- Synchronizing connected client state matrices across regional database regions.
- Minimizing data propagation delays between publishing sources and subscribing applications.
Our Solution
- Configured serverless WebSocket connection states inside low-latency Amazon DynamoDB indexes.
- Leveraged Amazon ElastiCache Redis as a high-speed pub/sub broker to orchestrate connection tracking and active sessions.
- Engineered lightweight, concurrency-optimized AWS Lambda triggers to scale execution instances instantly during spike windows.
Key Results
Massive Session Scaling
Successfully sustained over 500,000 active, simultaneous WebSocket connections under live conditions.
Ultra-Low Latency
Achieved sub-15ms message distribution rates from ingestion to end-user displays.
Zero Infrastructure Idle Costs
Utilized pure serverless billing components, cutting idle environment costs to absolute zero.
Outcome
Delivered a fully serverless WebSocket architecture using Amazon API Gateway, AWS Lambda, DynamoDB, and Redis that effortlessly scaled past 500k concurrent client sessions.
Tech Stack
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