model

var (
	// ErrNotFound is returned when the key supplied to a Get or Delete
	// method does not exist in the database.
	ErrNotFound = errors.New("key not found")

	// ErrBadValue is returned when the value supplied to the Put method
	// is nil.
	ErrBadValue = errors.New("bad value")

	//Db holds the db
	Db *bolt.DB
)