func ParseTs(key []byte) uint64 {
	if len(key) <= 8 {
		return 0
	}
	return math.MaxUint64 - binary.BigEndian.Uint64(key[len(key)-8:])
}
func ParseTs(key []byte) uint64 {
	if len(key) <= 8 {
		return 0
	}
	return math.MaxUint64 - binary.BigEndian.Uint64(key[len(key)-8:])
}
func ParseTs ( key [ ] byte ) uint64 { if len ( key ) <= 8 { return 0 } return math . MaxUint64 - binary . BigEndian . Uint64 ( key [ len ( key ) - 8 : ] ) }
// ParseTs parses the timestamp from the key bytes.
ParseTs parses the timestamp from the key bytes .