"Kubernetes load balancer" is a broad term that encompasses various concepts, including exposing Kubernetes services to the external world and balancing network traffic loads among services. A Kubernetes service allows pods to be exposed to internal or external usage, with different types of services available, such as ClusterIP, NodePort, and LoadBalancer. The LoadBalancer type exposes pods using an external load balancer, which is typically created by the cloud provider. Ingress is another API object that distributes network traffic to services according to predetermined routing rules or algorithms. Efficient distribution of network traffic among backend services is crucial for maximizing scalability and availability. Various load balancing algorithms are available, including Round Robin, L4 Round Robin, L7 Round Robin, Ring hash, Maglev, and Least connection. Best practices for handling Kubernetes load balancers include checking whether the load balancer is enabled, enabling readiness probes, enabling liveness probes, applying network policy, enabling CPU/Memory requests, and optimizing Kubernetes beyond load balancers. Additionally, using different availability zones and subnets can improve high availability and scalability. It's essential to check the Kubernetes cluster against configuration and security best practices and consider using a project like Metallb for a homelab setup.