pool

type Map interface {
	Delete(interface{})
	Load(interface{}) (interface{}, bool)
	LoadOrStore(interface{}, interface{}) (interface{}, bool)
	Range(func(interface{}, interface{}) bool)
	Store(interface{}, interface{})
}

type ProxyManager interface {
	Map
	sort.Interface

	IsExist(interface{}) bool
	CloseBad(int64)
	GetSortList() []*proxyNode
}