anchor.diff:  -behaviour(gen_server).
   
   %% API
  --export([start_link/0, bucket_hot_keys/1, all_local_hot_keys/0]).
  +-export([start_link/0,
  +         bucket_hot_keys/1, bucket_hot_keys/2,
  +         all_local_hot_keys/0]).
   
   %% gen_server callbacks
   -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
  
positive.code:     Reply = proplists:get_value(BucketName, State#state.bucket_hot_keys),
      {reply, Reply, State};
  handle_call(all_local_hot_keys, _From, State) ->
      {reply, State#state.local_hot_keys, State}.
  
  %%--------------------------------------------------------------------
  %% @private
  
negative.code: 
  all_local_hot_keys() ->
      gen_server:call(?MODULE, all_local_hot_keys).
  
  bucket_hot_keys(Bucket, Node) ->
      gen_server:call({?MODULE, Node}, {get_local_keys, Bucket}).
  
  %%--------------------------------------------------------------------
  %% @doc
  