Day 61: Circuit Breakers - Your System's Safety Net
254-Day Hands-On System Design Series | Module 2: Scalable Log ProcessingWeek 9: High Availability and Fault Tolerance
🎯 What We're Building Today
High-Level Agenda:
Intelligent Circuit Breaker Engine: Three-state machine (CLOSED/OPEN/HALF-OPEN) with automatic failure detection
Protected Service Layer: Database, message queue, and external API services with circuit breaker protection
Real-time Monitoring Dashboard: WebSocket-powered interface with live metrics and testing controls
Graceful Degradation System: Fallback mechanisms and recovery detection
Production Testing Framework: Failure simulation, load testing, and comprehensive validation
By lesson's end, you'll have: A bulletproof log processing system that prevents cascading failures and maintains availability during component outages.