Load Balancing, Failover, and Fault Tolerance Questions

Understand load balancing strategies (round-robin, least connections, consistent hashing, weighted load balancing). At Staff Level, understand the trade-offs between different strategies and when each is appropriate. Master failover mechanisms, service discovery, and circuit breakers. Understand concepts like graceful degradation, bulkheads (service isolation), and how to design systems that remain operational when components fail. Be comfortable discussing health checks, monitoring, and alerting strategies to detect failures and trigger failover.