Backend Pool

The set of origin server instances registered with a load balancer that are eligible to receive forwarded requests. A backend pool is defined with one or more server addresses, optional ports, weights, and connection limits. The load balancer continuously monitors pool members via health checks and removes unhealthy instances from the active rotation, returning them when they recover. Backend pools can be static (fixed server list in configuration) or dynamic (members registered and deregistered automatically via cloud APIs or service discovery systems such as Consul, Kubernetes Endpoints, or AWS Target Groups).