anchor.diff:            id = 0                :: integer(),
             vnode_id = 0          :: integer(),
             addr_id = 0           :: integer(),
  -          key                   :: string(),
  +          key                   :: binary(),
             node                  :: atom(),
             timestamp = 0         :: integer(),
             times = 0             :: integer()
  
positive.code: -record(read_parameter, {
            ref           :: reference(),
            addr_id       :: integer(),
            key           :: string(),
            etag = []     :: string(),
            start_pos = 0 :: integer(),
            end_pos   = 0 :: integer(),
            quorum        :: integer(),
  
negative.code: 
  -record(inconsistent_data_with_dc, {
            id = 0                :: integer(),
            cluster_id            :: atom(),
            addr_id = 0           :: integer(),
            key                   :: binary(),
            del = 0               :: integer(), %% del:[0:false, 1:true]
            timestamp = 0         :: integer(),
            times = 0             :: integer()}).
  