queuev2

type BackendQueue interface {
	Name() string
	Put([]byte) error
	ReadChan() <-chan []byte // this is expected to be an *unbuffered* channel
	Close() error
	Delete() error
	Depth() int64
	Empty() error
	SyncMeta()
}

type DataQueue interface {
	// PutDatas 用于存放一组数据
	PutDatas([]Data) error
	// ReadDatasChan 用于获取直接读取 Data 的管道
	ReadDatasChan() <-chan []Data
}