NewLeastN returns a Balancer that returns the node with the least connections of `n` randomly chosen nodes.

NewRandom returns a Balancer that randomly selects one of the current nodes supplied by its Resolver.

NewRoundRobin returns a Balancer that implements round robin load balancing.

Balancer is a load balancer that wraps a service discovery instance to distribute access across the nodes of a service.

Cache encapsulates the stateful parts of a load balancer.