lb

type Balancer interface {
	// Balance will return an address for a service or an empty
	// string if no nodes are available.
	Balance(service string) (addr string, err merry.Error)
}

type Cache interface {
	// Next returns an addr given a service name and current addrs
	Next(service string, nodes []string) string
}

type CacheBalancer struct {
	Cache    Cache
	Resolver sd.Resolver
}