## Load balancing for system design interviews, explained

System design interviews often require implementing load balancers and message queues to manage traffic and asynchronous tasks. Load balancing involves choosing specific algorithms and layers to distribute requests while managing unhealthy instances to avoid system failure. Similarly, message queues handle non-blocking operations like email delivery or payment settlement. Both components require deliberate choices regarding delivery guarantees, failure handling, and consumer behavior to ensure the system remains robust and avoids becoming a single point of failure.