Real-Time Cryptocurrency Trading Risk Assessment Engine

Design a Laravel microservice that can process multiple cryptocurrency exchange API streams simultaneously, calculating real-time risk metrics using advanced statistical models. The system must handle concurrent API connections from Binance, Coinbase, and Kraken, implement circuit breaker patterns to prevent system overload, and generate risk scores with less than 50ms latency. Include robust error handling for API disconnections, implement a distributed caching mechanism using Redis, and create a fault-tolerant architecture that can scale horizontally.